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329 lines
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329 lines
213 KiB
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class=tag-list-link href=/tags/Spring/ rel=tag>Spring</a><span class=tag-list-count>7</span><li class=tag-list-item><a class=tag-list-link href=/tags/Spring-Event/ rel=tag>Spring Event</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/SpringBoot/ rel=tag>SpringBoot</a><span class=tag-list-count>7</span><li class=tag-list-item><a class=tag-list-link href=/tags/Sql%E6%B3%A8%E5%85%A5/ rel=tag>Sql注入</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/Stream/ rel=tag>Stream</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/Synchronized/ rel=tag>Synchronized</a><span class=tag-list-count>2</span><li class=tag-list-item><a class=tag-list-link href=/tags/Thread-dump/ rel=tag>Thread dump</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/ThreadLocal/ rel=tag>ThreadLocal</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/ThreadPool/ rel=tag>ThreadPool</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/Tomcat/ rel=tag>Tomcat</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/Trapping-Rain-Water/ rel=tag>Trapping Rain Water</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/WeakReference/ rel=tag>WeakReference</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/Web/ rel=tag>Web</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/Webhook/ rel=tag>Webhook</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/Windows/ rel=tag>Windows</a><span class=tag-list-count>4</span><li class=tag-list-item><a class=tag-list-link href=/tags/WordPress/ rel=tag>WordPress</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/aqs/ rel=tag>aqs</a><span class=tag-list-count>3</span><li class=tag-list-item><a class=tag-list-link href=/tags/await/ rel=tag>await</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/bloom-filter/ rel=tag>bloom filter</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/c/ rel=tag>c++</a><span class=tag-list-count>14</span><li class=tag-list-item><a class=tag-list-link href=/tags/cglib/ rel=tag>cglib</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/cgroup/ rel=tag>cgroup</a><span class=tag-list-count>2</span><li class=tag-list-item><a class=tag-list-link href=/tags/cluster/ rel=tag>cluster</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/condition/ rel=tag>condition</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/dnsmasq/ rel=tag>dnsmasq</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/docker/ rel=tag>docker</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/dp/ rel=tag>dp</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/dubbo/ rel=tag>dubbo</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/echo/ rel=tag>echo</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/environment/ rel=tag>environment</a><span class=tag-list-count>2</span><li class=tag-list-item><a class=tag-list-link href=/tags/gap-lock/ rel=tag>gap lock</a><span class=tag-list-count>2</span><li class=tag-list-item><a class=tag-list-link href=/tags/gc/ rel=tag>gc</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/git/ rel=tag>git</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/grep/ rel=tag>grep</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/hadoop/ rel=tag>hadoop</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/headscale/ rel=tag>headscale</a><span class=tag-list-count>2</span><li class=tag-list-item><a class=tag-list-link href=/tags/hexo/ rel=tag>hexo</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/icu4c/ rel=tag>icu4c</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/im/ rel=tag>im</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/is-not-null/ rel=tag>is not null</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/is-null/ rel=tag>is null</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/j-u-c/ rel=tag>j.u.c</a><span class=tag-list-count>2</span><li class=tag-list-item><a class=tag-list-link href=/tags/java/ rel=tag>java</a><span class=tag-list-count>35</span><li class=tag-list-item><a class=tag-list-link href=/tags/jvm/ rel=tag>jvm</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/leetcode/ rel=tag>leetcode</a><span class=tag-list-count>40</span><li class=tag-list-item><a class=tag-list-link href=/tags/leetcode-155/ rel=tag>leetcode 155</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/linked-list/ rel=tag>linked list</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/linux/ rel=tag>linux</a><span class=tag-list-count>3</span><li class=tag-list-item><a class=tag-list-link href=/tags/lock/ rel=tag>lock</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/mfc/ rel=tag>mfc</a><span class=tag-list-count>2</span><li class=tag-list-item><a class=tag-list-link href=/tags/min-stack/ rel=tag>min stack</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/mq/ rel=tag>mq</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/mvcc/ rel=tag>mvcc</a><span class=tag-list-count>3</span><li class=tag-list-item><a class=tag-list-link href=/tags/mysql/ rel=tag>mysql</a><span class=tag-list-count>6</span><li class=tag-list-item><a class=tag-list-link href=/tags/namespace/ rel=tag>namespace</a><span class=tag-list-count>3</span><li class=tag-list-item><a class=tag-list-link href=/tags/nas/ rel=tag>nas</a><span class=tag-list-count>6</span><li class=tag-list-item><a class=tag-list-link href=/tags/next-key-lock/ rel=tag>next-key lock</a><span class=tag-list-count>2</span><li class=tag-list-item><a class=tag-list-link href=/tags/nginx/ rel=tag>nginx</a><span class=tag-list-count>3</span><li class=tag-list-item><a class=tag-list-link href=/tags/nullsfirst/ rel=tag>nullsfirst</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/openresty/ rel=tag>openresty</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/php/ rel=tag>php</a><span class=tag-list-count>4</span><li class=tag-list-item><a class=tag-list-link href=/tags/powershell/ rel=tag>powershell</a><span class=tag-list-count>2</span><li class=tag-list-item><a class=tag-list-link href=/tags/procedure/ rel=tag>procedure</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/python/ rel=tag>python</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/read-view/ rel=tag>read view</a><span class=tag-list-count>3</span><li class=tag-list-item><a class=tag-list-link href=/tags/redis/ rel=tag>redis</a><span class=tag-list-count>12</span><li class=tag-list-item><a class=tag-list-link href=/tags/scp/ rel=tag>scp</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/signal/ rel=tag>signal</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/sort/ rel=tag>sort</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/spark/ rel=tag>spark</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/ssh/ rel=tag>ssh</a><span class=tag-list-count>3</span><li class=tag-list-item><a class=tag-list-link href=/tags/stack/ rel=tag>stack</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/stream/ rel=tag>stream</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/string/ rel=tag>string</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/swoole/ rel=tag>swoole</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/top/ rel=tag>top</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/uname/ rel=tag>uname</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/unlock/ rel=tag>unlock</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/utf8/ rel=tag>utf8</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/utf8mb4/ rel=tag>utf8mb4</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/utf8mb4-0900-ai-ci/ rel=tag>utf8mb4_0900_ai_ci</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/utf8mb4-general-ci/ rel=tag>utf8mb4_general_ci</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/utf8mb4-unicode-ci/ rel=tag>utf8mb4_unicode_ci</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/value/ rel=tag>value</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/websocket/ rel=tag>websocket</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/windows/ rel=tag>windows</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/wsl/ rel=tag>wsl</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/zookeeper/ rel=tag>zookeeper</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/zsh/ rel=tag>zsh</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E4%B8%89%E9%98%B6%E6%AE%B5%E6%8F%90%E4%BA%A4/ rel=tag>三阶段提交</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E4%B8%8D%E5%8F%AF%E5%8F%98%E5%BC%95%E7%94%A8/ rel=tag>不可变引用</a><span class=tag-list-count>2</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E4%B8%9C%E4%BA%AC%E5%A5%A5%E8%BF%90%E4%BC%9A/ rel=tag>东京奥运会</a><span class=tag-list-count>2</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E4%B8%A4%E9%98%B6%E6%AE%B5%E6%8F%90%E4%BA%A4/ rel=tag>两阶段提交</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E4%B8%AD%E5%B1%B1%E8%B7%AF/ rel=tag>中山路</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E4%B8%AD%E5%BA%8F/ rel=tag>中序</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E4%B8%AD%E9%97%B4%E4%BB%B6/ rel=tag>中间件</a><span class=tag-list-count>4</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E4%B8%BE%E9%87%8D/ rel=tag>举重</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E4%B9%92%E4%B9%93%E7%90%83/ rel=tag>乒乓球</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E4%BA%8B%E5%8A%A1/ rel=tag>事务</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E4%BA%8C%E5%8F%89%E6%A0%91/ rel=tag>二叉树</a><span class=tag-list-count>3</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E4%BA%92%E6%96%A5%E9%94%81/ rel=tag>互斥锁</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E4%BB%A3%E7%A0%81%E9%A2%98%E8%A7%A3/ rel=tag>代码题解</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E4%BF%AE%E7%94%B5%E8%84%91%E7%9A%84/ rel=tag>修电脑的</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E5%81%8F%E5%90%91%E9%94%81/ rel=tag>偏向锁</a><span class=tag-list-count>2</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E5%81%A5%E5%BA%B7%E7%A0%81/ rel=tag>健康码</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E5%85%AC%E4%BA%A4/ rel=tag>公交</a><span class=tag-list-count>3</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E5%85%AC%E4%BA%A4%E8%BD%A6/ rel=tag>公交车</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E5%86%85%E5%AD%98%E5%88%86%E5%B8%83/ rel=tag>内存分布</a><span class=tag-list-count>3</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E5%86%85%E5%AD%98%E6%B3%84%E6%BC%8F/ rel=tag>内存泄漏</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E5%87%86%E5%A4%87/ rel=tag>准备</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E5%87%8F%E8%82%A5/ rel=tag>减肥</a><span class=tag-list-count>7</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E5%88%86%E5%B8%83%E5%BC%8F%E4%BA%8B%E5%8A%A1/ rel=tag>分布式事务</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E5%88%86%E5%B8%83%E5%BC%8F%E9%94%81/ rel=tag>分布式锁</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E5%88%87%E7%89%87/ rel=tag>切片</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E5%88%9D%E5%A7%8B%E5%8C%96/ rel=tag>初始化</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E5%89%8A%E5%B3%B0%E5%A1%AB%E8%B0%B7/ rel=tag>削峰填谷</a><span class=tag-list-count>4</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E5%89%8D%E5%BA%8F/ rel=tag>前序</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E5%8A%A0%E5%A1%9E/ rel=tag>加塞</a><span class=tag-list-count>3</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E5%8A%A0%E8%BD%BD/ rel=tag>加载</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E5%8D%95%E4%BE%8B/ rel=tag>单例</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E5%8D%9A%E5%AE%A2%EF%BC%8C%E6%96%87%E7%AB%A0/ rel=tag>博客，文章</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E5%8E%A6%E9%97%A8/ rel=tag>厦门</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E5%8F%8C%E4%BA%B2%E5%A7%94%E6%B4%BE/ rel=tag>双亲委派</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E5%8F%91%E8%A1%8C%E7%89%88/ rel=tag>发行版</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E5%8F%A3%E7%BD%A9/ rel=tag>口罩</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E5%8F%AF%E5%8F%98%E5%BC%95%E7%94%A8/ rel=tag>可变引用</a><span class=tag-list-count>2</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E5%90%90%E6%A7%BD/ rel=tag>吐槽</a><span class=tag-list-count>2</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E5%9B%A4%E7%89%A9%E8%B5%84/ rel=tag>囤物资</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E5%9E%83%E5%9C%BE%E5%9B%9E%E6%94%B6/ rel=tag>垃圾回收</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E5%9F%BA%E7%A1%80%E8%AE%BE%E6%96%BD/ rel=tag>基础设施</a><span class=tag-list-count>2</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E5%A4%A7%E6%89%AB%E9%99%A4/ rel=tag>大扫除</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E5%AD%97%E7%AC%A6%E9%9B%86/ rel=tag>字符集</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link 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href=/2023/08/20/springboot-web-server-%E5%90%AF%E5%8A%A8%E9%80%BB%E8%BE%91/ itemprop=url>springboot web server 启动逻辑</a></h2><div class=post-meta-container><div class=post-meta><span class=post-meta-item><span class=post-meta-item-icon><i class="far fa-calendar"></i> </span><span class=post-meta-item-text>发表于</span> <time itemprop="dateCreated datePublished" title="创建时间：2023-08-20 17:38:56" datetime=2023-08-20T17:38:56+08:00>2023-08-20</time> </span><span class=post-meta-item><span class=post-meta-item-icon><i class="far fa-calendar-check"></i> </span><span class=post-meta-item-text>更新于</span> <time title="修改时间：2023-08-27 10:25:44" datetime=2023-08-27T10:25:44+08:00 itemprop=dateModified>2023-08-27</time> </span><span class=post-meta-item><span class=post-meta-item-icon><i class="far fa-folder"></i> </span><span class=post-meta-item-text>分类于</span> <span itemprop=about itemscope itemtype=http://schema.org/Thing><a href=/categories/Java/ itemprop=url rel=index><span itemprop=name>Java</span></a> </span>， <span itemprop=about itemscope itemtype=http://schema.org/Thing><a href=/categories/Java/SpringBoot/ itemprop=url rel=index><span itemprop=name>SpringBoot</span></a> </span></span><span class="post-meta-item leancloud_visitors" data-flag-title="springboot web server 启动逻辑" id=/2023/08/20/springboot-web-server-%E5%90%AF%E5%8A%A8%E9%80%BB%E8%BE%91/ title=阅读次数><span class=post-meta-item-icon><i class="far fa-eye"></i> </span><span class=post-meta-item-text>阅读次数：</span> <span class=leancloud-visitors-count></span> </span><span class=post-meta-item><span class=post-meta-item-icon><i class="far fa-comment"></i> </span><span class=post-meta-item-text>Disqus：</span> <a href=/2023/08/20/springboot-web-server-%E5%90%AF%E5%8A%A8%E9%80%BB%E8%BE%91/#disqus_thread itemprop=discussionUrl title=disqus><span class="post-comments-count disqus-comment-count" data-disqus-identifier=2023/08/20/springboot-web-server-启动逻辑/ itemprop=commentCount></span></a></span></div></div></header><div class=post-body itemprop=articleBody><p>springboot 的一个方便之处就是集成了 web server 进去，接着上一篇继续来看下这个 web server 的启动过程<br>基于 springboot 的 2.2.9.RELEASE 版本<br>整个 springboot 体系主体就是看 <code>org.springframework.context.support.AbstractApplicationContext#refresh</code> 刷新方法，<br>而启动 web server 的方法就是在其中的 OnRefresh<pre class="line-numbers language-java" data-language=java><code class=language-java><span class="token keyword">try</span> <span class="token punctuation">{</span>
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<span class="token comment">// Allows post-processing of the bean factory in context subclasses.</span>
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<span class="token function">postProcessBeanFactory</span><span class="token punctuation">(</span>beanFactory<span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token comment">// Invoke factory processors registered as beans in the context.</span>
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<span class="token function">invokeBeanFactoryPostProcessors</span><span class="token punctuation">(</span>beanFactory<span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token comment">// Register bean processors that intercept bean creation.</span>
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<span class="token function">registerBeanPostProcessors</span><span class="token punctuation">(</span>beanFactory<span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token comment">// Initialize message source for this context.</span>
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<span class="token function">initMessageSource</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token comment">// Initialize event multicaster for this context.</span>
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<span class="token function">initApplicationEventMulticaster</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token comment">// Initialize other special beans in specific context subclasses.</span>
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<span class="token comment">// ------------------> ‼️就是这里</span>
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<span class="token function">onRefresh</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token comment">// Check for listener beans and register them.</span>
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<span class="token function">registerListeners</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token comment">// Instantiate all remaining (non-lazy-init) singletons.</span>
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<span class="token function">finishBeanFactoryInitialization</span><span class="token punctuation">(</span>beanFactory<span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token comment">// Last step: publish corresponding event.</span>
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<span class="token function">finishRefresh</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span><span aria-hidden=true class=line-numbers-rows><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre><p>跟进去其实本身是啥都不做的，由具体的实现类子类去做各自的处理<br><code>org.springframework.context.support.AbstractApplicationContext#onRefresh</code><pre class="line-numbers language-java" data-language=java><code class=language-java><span class="token comment">/**
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* Template method which can be overridden to add context-specific refresh work.
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* Called on initialization of special beans, before instantiation of singletons.
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* <p>This implementation is empty.
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* @throws BeansException in case of errors
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* @see #refresh()
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*/</span>
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<span class="token keyword">protected</span> <span class="token keyword">void</span> <span class="token function">onRefresh</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token keyword">throws</span> <span class="token class-name">BeansException</span> <span class="token punctuation">{</span>
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<span class="token comment">// For subclasses: do nothing by default.</span>
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<span class="token punctuation">}</span><span aria-hidden=true class=line-numbers-rows><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre><p>看具体的实现类里就有我们的主角<br><code>org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext#onRefresh</code><pre class="line-numbers language-java" data-language=java><code class=language-java><span class="token keyword">protected</span> <span class="token keyword">void</span> <span class="token function">onRefresh</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token keyword">super</span><span class="token punctuation">.</span><span class="token function">onRefresh</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">try</span> <span class="token punctuation">{</span>
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<span class="token comment">// -------------> 主要就是这里，创建 webserver</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">createWebServer</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span> <span class="token keyword">catch</span> <span class="token punctuation">(</span><span class="token class-name">Throwable</span> var2<span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token keyword">throw</span> <span class="token keyword">new</span> <span class="token class-name">ApplicationContextException</span><span class="token punctuation">(</span><span class="token string">"Unable to start web server"</span><span class="token punctuation">,</span> var2<span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span>
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<span class="token punctuation">}</span><span aria-hidden=true class=line-numbers-rows><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre><p>具体的就是一些前置处理<br><code>org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext#createWebServer</code><pre class="line-numbers language-java" data-language=java><code class=language-java><span class="token keyword">private</span> <span class="token keyword">void</span> <span class="token function">createWebServer</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token class-name">WebServer</span> webServer <span class="token operator">=</span> <span class="token keyword">this</span><span class="token punctuation">.</span>webServer<span class="token punctuation">;</span>
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<span class="token class-name">ServletContext</span> servletContext <span class="token operator">=</span> <span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">getServletContext</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">if</span> <span class="token punctuation">(</span>webServer <span class="token operator">==</span> <span class="token keyword">null</span> <span class="token operator">&&</span> servletContext <span class="token operator">==</span> <span class="token keyword">null</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token class-name">ServletWebServerFactory</span> factory <span class="token operator">=</span> <span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">getWebServerFactory</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>webServer <span class="token operator">=</span> factory<span class="token punctuation">.</span><span class="token function">getWebServer</span><span class="token punctuation">(</span><span class="token keyword">new</span> <span class="token class-name">ServletContextInitializer</span><span class="token punctuation">[</span><span class="token punctuation">]</span><span class="token punctuation">{</span><span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">getSelfInitializer</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">}</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span> <span class="token keyword">else</span> <span class="token keyword">if</span> <span class="token punctuation">(</span>servletContext <span class="token operator">!=</span> <span class="token keyword">null</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token keyword">try</span> <span class="token punctuation">{</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">getSelfInitializer</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">onStartup</span><span class="token punctuation">(</span>servletContext<span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span> <span class="token keyword">catch</span> <span class="token punctuation">(</span><span class="token class-name">ServletException</span> var4<span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token keyword">throw</span> <span class="token keyword">new</span> <span class="token class-name">ApplicationContextException</span><span class="token punctuation">(</span><span class="token string">"Cannot initialize servlet context"</span><span class="token punctuation">,</span> var4<span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span>
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<span class="token punctuation">}</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">initPropertySources</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span><span aria-hidden=true class=line-numbers-rows><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre><p>初始的 webServer 和 servletContext 都是 null，需要进行初始化<br>先是获取 WebServer 工厂,<br><code>org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext#getWebServerFactory</code><pre class="line-numbers language-java" data-language=java><code class=language-java><span class="token keyword">protected</span> <span class="token class-name">ServletWebServerFactory</span> <span class="token function">getWebServerFactory</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token class-name">String</span><span class="token punctuation">[</span><span class="token punctuation">]</span> beanNames <span class="token operator">=</span> <span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">getBeanFactory</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">getBeanNamesForType</span><span class="token punctuation">(</span><span class="token class-name">ServletWebServerFactory</span><span class="token punctuation">.</span><span class="token keyword">class</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">if</span> <span class="token punctuation">(</span>beanNames<span class="token punctuation">.</span>length <span class="token operator">==</span> <span class="token number">0</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token keyword">throw</span> <span class="token keyword">new</span> <span class="token class-name">ApplicationContextException</span><span class="token punctuation">(</span><span class="token string">"Unable to start ServletWebServerApplicationContext due to missing ServletWebServerFactory bean."</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span> <span class="token keyword">else</span> <span class="token keyword">if</span> <span class="token punctuation">(</span>beanNames<span class="token punctuation">.</span>length <span class="token operator">></span> <span class="token number">1</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token keyword">throw</span> <span class="token keyword">new</span> <span class="token class-name">ApplicationContextException</span><span class="token punctuation">(</span><span class="token string">"Unable to start ServletWebServerApplicationContext due to multiple ServletWebServerFactory beans : "</span> <span class="token operator">+</span> <span class="token class-name">StringUtils</span><span class="token punctuation">.</span><span class="token function">arrayToCommaDelimitedString</span><span class="token punctuation">(</span>beanNames<span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span> <span class="token keyword">else</span> <span class="token punctuation">{</span>
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<span class="token keyword">return</span> <span class="token punctuation">(</span><span class="token class-name">ServletWebServerFactory</span><span class="token punctuation">)</span><span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">getBeanFactory</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">getBean</span><span class="token punctuation">(</span>beanNames<span class="token punctuation">[</span><span class="token number">0</span><span class="token punctuation">]</span><span class="token punctuation">,</span> <span class="token class-name">ServletWebServerFactory</span><span class="token punctuation">.</span><span class="token keyword">class</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span>
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<span class="token punctuation">}</span>
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<span aria-hidden=true class=line-numbers-rows><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre><p>获取了类型是 <code>ServletWebServerFactory</code> 的 bean，然后再回来就是调用的接口方法<br><code>org.springframework.boot.web.servlet.server.ServletWebServerFactory#getWebServer</code><br>根据具体的 factory 来生成对应的譬如 tomcat 的 factory，<br><code>org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory#getWebServer</code><pre class="line-numbers language-java" data-language=java><code class=language-java><span class="token annotation punctuation">@Override</span>
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<span class="token keyword">public</span> <span class="token class-name">WebServer</span> <span class="token function">getWebServer</span><span class="token punctuation">(</span><span class="token class-name">ServletContextInitializer</span><span class="token punctuation">.</span><span class="token punctuation">.</span><span class="token punctuation">.</span> initializers<span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token keyword">if</span> <span class="token punctuation">(</span><span class="token keyword">this</span><span class="token punctuation">.</span>disableMBeanRegistry<span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token class-name">Registry</span><span class="token punctuation">.</span><span class="token function">disableRegistry</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span>
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<span class="token class-name">Tomcat</span> tomcat <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">Tomcat</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token class-name">File</span> baseDir <span class="token operator">=</span> <span class="token punctuation">(</span><span class="token keyword">this</span><span class="token punctuation">.</span>baseDirectory <span class="token operator">!=</span> <span class="token keyword">null</span><span class="token punctuation">)</span> <span class="token operator">?</span> <span class="token keyword">this</span><span class="token punctuation">.</span>baseDirectory <span class="token operator">:</span> <span class="token function">createTempDir</span><span class="token punctuation">(</span><span class="token string">"tomcat"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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tomcat<span class="token punctuation">.</span><span class="token function">setBaseDir</span><span class="token punctuation">(</span>baseDir<span class="token punctuation">.</span><span class="token function">getAbsolutePath</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token class-name">Connector</span> connector <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">Connector</span><span class="token punctuation">(</span><span class="token keyword">this</span><span class="token punctuation">.</span>protocol<span class="token punctuation">)</span><span class="token punctuation">;</span>
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connector<span class="token punctuation">.</span><span class="token function">setThrowOnFailure</span><span class="token punctuation">(</span><span class="token boolean">true</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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tomcat<span class="token punctuation">.</span><span class="token function">getService</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">addConnector</span><span class="token punctuation">(</span>connector<span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token function">customizeConnector</span><span class="token punctuation">(</span>connector<span class="token punctuation">)</span><span class="token punctuation">;</span>
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tomcat<span class="token punctuation">.</span><span class="token function">setConnector</span><span class="token punctuation">(</span>connector<span class="token punctuation">)</span><span class="token punctuation">;</span>
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tomcat<span class="token punctuation">.</span><span class="token function">getHost</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">setAutoDeploy</span><span class="token punctuation">(</span><span class="token boolean">false</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token function">configureEngine</span><span class="token punctuation">(</span>tomcat<span class="token punctuation">.</span><span class="token function">getEngine</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">for</span> <span class="token punctuation">(</span><span class="token class-name">Connector</span> additionalConnector <span class="token operator">:</span> <span class="token keyword">this</span><span class="token punctuation">.</span>additionalTomcatConnectors<span class="token punctuation">)</span> <span class="token punctuation">{</span>
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tomcat<span class="token punctuation">.</span><span class="token function">getService</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">addConnector</span><span class="token punctuation">(</span>additionalConnector<span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span>
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<span class="token function">prepareContext</span><span class="token punctuation">(</span>tomcat<span class="token punctuation">.</span><span class="token function">getHost</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">,</span> initializers<span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">return</span> <span class="token function">getTomcatWebServer</span><span class="token punctuation">(</span>tomcat<span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span><span aria-hidden=true class=line-numbers-rows><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre><p><img data-src=https://img.nicksxs.com/blog/ApIStM.jpg><p>最后一行就是创建 TomcatWebServer,<br><code>org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory#getTomcatWebServer</code><pre class="line-numbers language-java" data-language=java><code class=language-java><span class="token comment">/**
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* Factory method called to create the {@link TomcatWebServer}. Subclasses can
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* override this method to return a different {@link TomcatWebServer} or apply
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|
* additional processing to the Tomcat server.
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|
* @param tomcat the Tomcat server.
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* @return a new {@link TomcatWebServer} instance
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*/</span>
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<span class="token keyword">protected</span> <span class="token class-name">TomcatWebServer</span> <span class="token function">getTomcatWebServer</span><span class="token punctuation">(</span><span class="token class-name">Tomcat</span> tomcat<span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token keyword">return</span> <span class="token keyword">new</span> <span class="token class-name">TomcatWebServer</span><span class="token punctuation">(</span>tomcat<span class="token punctuation">,</span> <span class="token function">getPort</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token operator">>=</span> <span class="token number">0</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span><span aria-hidden=true class=line-numbers-rows><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre><p>这里面就开始 new 了一个 TomcatWebServer，<br><code>org.springframework.boot.web.embedded.tomcat.TomcatWebServer#TomcatWebServer(org.apache.catalina.startup.Tomcat, boolean)</code><pre class="line-numbers language-java" data-language=java><code class=language-java><span class="token keyword">public</span> <span class="token class-name">TomcatWebServer</span><span class="token punctuation">(</span><span class="token class-name">Tomcat</span> tomcat<span class="token punctuation">,</span> <span class="token keyword">boolean</span> autoStart<span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token class-name">Assert</span><span class="token punctuation">.</span><span class="token function">notNull</span><span class="token punctuation">(</span>tomcat<span class="token punctuation">,</span> <span class="token string">"Tomcat Server must not be null"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>tomcat <span class="token operator">=</span> tomcat<span class="token punctuation">;</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>autoStart <span class="token operator">=</span> autoStart<span class="token punctuation">;</span>
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<span class="token function">initialize</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span><span aria-hidden=true class=line-numbers-rows><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre><p>再调用里面的初始化方法，<code>org.springframework.boot.web.embedded.tomcat.TomcatWebServer#initialize</code><pre class="line-numbers language-java" data-language=java><code class=language-java><span class="token keyword">private</span> <span class="token keyword">void</span> <span class="token function">initialize</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token keyword">throws</span> <span class="token class-name">WebServerException</span> <span class="token punctuation">{</span>
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logger<span class="token punctuation">.</span><span class="token function">info</span><span class="token punctuation">(</span><span class="token string">"Tomcat initialized with port(s): "</span> <span class="token operator">+</span> <span class="token function">getPortsDescription</span><span class="token punctuation">(</span><span class="token boolean">false</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">synchronized</span> <span class="token punctuation">(</span><span class="token keyword">this</span><span class="token punctuation">.</span>monitor<span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token keyword">try</span> <span class="token punctuation">{</span>
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<span class="token function">addInstanceIdToEngineName</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token class-name">Context</span> context <span class="token operator">=</span> <span class="token function">findContext</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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context<span class="token punctuation">.</span><span class="token function">addLifecycleListener</span><span class="token punctuation">(</span><span class="token punctuation">(</span>event<span class="token punctuation">)</span> <span class="token operator">-></span> <span class="token punctuation">{</span>
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<span class="token keyword">if</span> <span class="token punctuation">(</span>context<span class="token punctuation">.</span><span class="token function">equals</span><span class="token punctuation">(</span>event<span class="token punctuation">.</span><span class="token function">getSource</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span> <span class="token operator">&&</span> <span class="token class-name">Lifecycle</span><span class="token punctuation">.</span><span class="token constant">START_EVENT</span><span class="token punctuation">.</span><span class="token function">equals</span><span class="token punctuation">(</span>event<span class="token punctuation">.</span><span class="token function">getType</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token comment">// Remove service connectors so that protocol binding doesn't</span>
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<span class="token comment">// happen when the service is started.</span>
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<span class="token function">removeServiceConnectors</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span>
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<span class="token punctuation">}</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token comment">// Start the server to trigger initialization listeners</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>tomcat<span class="token punctuation">.</span><span class="token function">start</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token comment">// We can re-throw failure exception directly in the main thread</span>
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<span class="token function">rethrowDeferredStartupExceptions</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">try</span> <span class="token punctuation">{</span>
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<span class="token class-name">ContextBindings</span><span class="token punctuation">.</span><span class="token function">bindClassLoader</span><span class="token punctuation">(</span>context<span class="token punctuation">,</span> context<span class="token punctuation">.</span><span class="token function">getNamingToken</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">,</span> <span class="token function">getClass</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">getClassLoader</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span>
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<span class="token keyword">catch</span> <span class="token punctuation">(</span><span class="token class-name">NamingException</span> ex<span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token comment">// Naming is not enabled. Continue</span>
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<span class="token punctuation">}</span>
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<span class="token comment">// Unlike Jetty, all Tomcat threads are daemon threads. We create a</span>
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<span class="token comment">// blocking non-daemon to stop immediate shutdown</span>
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<span class="token function">startDaemonAwaitThread</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span>
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<span class="token keyword">catch</span> <span class="token punctuation">(</span><span class="token class-name">Exception</span> ex<span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token function">stopSilently</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token function">destroySilently</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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|
<span class="token keyword">throw</span> <span class="token keyword">new</span> <span class="token class-name">WebServerException</span><span class="token punctuation">(</span><span class="token string">"Unable to start embedded Tomcat"</span><span class="token punctuation">,</span> ex<span class="token punctuation">)</span><span class="token punctuation">;</span>
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|
<span class="token punctuation">}</span>
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|
<span class="token punctuation">}</span>
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|
<span class="token punctuation">}</span>
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|
```
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这里就是继续调用 `<span class="token class-name"><span class="token namespace">org<span class="token punctuation">.</span>apache<span class="token punctuation">.</span>catalina<span class="token punctuation">.</span>startup<span class="token punctuation">.</span></span>Tomcat</span>#start`
|
|
```java
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|
<span class="token keyword">public</span> <span class="token keyword">void</span> <span class="token function">start</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token keyword">throws</span> <span class="token class-name">LifecycleException</span> <span class="token punctuation">{</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">getServer</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>server<span class="token punctuation">.</span><span class="token function">start</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
|
|
<span class="token punctuation">}</span>
|
|
```
|
|
获取server<span class="token punctuation">,</span> `<span class="token class-name"><span class="token namespace">org<span class="token punctuation">.</span>apache<span class="token punctuation">.</span>catalina<span class="token punctuation">.</span>startup<span class="token punctuation">.</span></span>Tomcat</span>#getServer`
|
|
```java
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<span class="token keyword">public</span> <span class="token class-name">Server</span> <span class="token function">getServer</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token keyword">if</span> <span class="token punctuation">(</span><span class="token keyword">this</span><span class="token punctuation">.</span>server <span class="token operator">!=</span> <span class="token keyword">null</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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|
<span class="token keyword">return</span> <span class="token keyword">this</span><span class="token punctuation">.</span>server<span class="token punctuation">;</span>
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|
<span class="token punctuation">}</span> <span class="token keyword">else</span> <span class="token punctuation">{</span>
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|
<span class="token class-name">System</span><span class="token punctuation">.</span><span class="token function">setProperty</span><span class="token punctuation">(</span><span class="token string">"catalina.useNaming"</span><span class="token punctuation">,</span> <span class="token string">"false"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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|
<span class="token keyword">this</span><span class="token punctuation">.</span>server <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">StandardServer</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">initBaseDir</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token class-name">ConfigFileLoader</span><span class="token punctuation">.</span><span class="token function">setSource</span><span class="token punctuation">(</span><span class="token keyword">new</span> <span class="token class-name">CatalinaBaseConfigurationSource</span><span class="token punctuation">(</span><span class="token keyword">new</span> <span class="token class-name">File</span><span class="token punctuation">(</span><span class="token keyword">this</span><span class="token punctuation">.</span>basedir<span class="token punctuation">)</span><span class="token punctuation">,</span> <span class="token punctuation">(</span><span class="token class-name">String</span><span class="token punctuation">)</span><span class="token keyword">null</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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|
<span class="token keyword">this</span><span class="token punctuation">.</span>server<span class="token punctuation">.</span><span class="token function">setPort</span><span class="token punctuation">(</span><span class="token operator">-</span><span class="token number">1</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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|
<span class="token class-name">Service</span> service <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">StandardService</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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|
service<span class="token punctuation">.</span><span class="token function">setName</span><span class="token punctuation">(</span><span class="token string">"Tomcat"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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|
<span class="token keyword">this</span><span class="token punctuation">.</span>server<span class="token punctuation">.</span><span class="token function">addService</span><span class="token punctuation">(</span>service<span class="token punctuation">)</span><span class="token punctuation">;</span>
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|
<span class="token keyword">return</span> <span class="token keyword">this</span><span class="token punctuation">.</span>server<span class="token punctuation">;</span>
|
|
<span class="token punctuation">}</span>
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|
<span class="token punctuation">}</span><span aria-hidden=true class=line-numbers-rows><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre><p>然后就是启动 server，后面可以继续看这个启动 TomcatServer 内部的逻辑</div><footer class=post-footer><div class=post-eof></div></footer></article></div><div class=post-block><article class=post-content itemscope itemtype=http://schema.org/Article><link href=https://nicksxs.me/2023/08/13/springboot-mappings-%E6%B3%A8%E5%86%8C%E9%80%BB%E8%BE%91/ itemprop=mainEntityOfPage><span hidden itemprop=author itemscope itemtype=http://schema.org/Person><meta content=/uploads/avatar.jpg itemprop=image><meta content=Nicksxs itemprop=name></span><span hidden itemprop=publisher itemscope itemtype=http://schema.org/Organization><meta content="Nicksxs's Blog" itemprop=name><meta content="learn from zero,技术博客，Nicksxs，史学森" itemprop=description></span><span hidden itemprop=post itemscope itemtype=http://schema.org/CreativeWork><meta content="undefined | Nicksxs's Blog" itemprop=name><meta itemprop=description></span><header class=post-header><h2 itemprop="name headline" class=post-title><a class=post-title-link href=/2023/08/13/springboot-mappings-%E6%B3%A8%E5%86%8C%E9%80%BB%E8%BE%91/ itemprop=url>springboot mappings 注册逻辑</a></h2><div class=post-meta-container><div class=post-meta><span class=post-meta-item><span class=post-meta-item-icon><i class="far fa-calendar"></i> </span><span class=post-meta-item-text>发表于</span> <time itemprop="dateCreated datePublished" title="创建时间：2023-08-13 20:38:31 / 修改时间：20:39:57" datetime=2023-08-13T20:38:31+08:00>2023-08-13</time> </span><span class=post-meta-item><span class=post-meta-item-icon><i class="far fa-folder"></i> </span><span class=post-meta-item-text>分类于</span> <span itemprop=about itemscope itemtype=http://schema.org/Thing><a href=/categories/Java/ itemprop=url rel=index><span itemprop=name>Java</span></a> </span>， <span itemprop=about itemscope itemtype=http://schema.org/Thing><a href=/categories/Java/SpringBoot/ itemprop=url rel=index><span itemprop=name>SpringBoot</span></a> </span></span><span class="post-meta-item leancloud_visitors" data-flag-title="springboot mappings 注册逻辑" id=/2023/08/13/springboot-mappings-%E6%B3%A8%E5%86%8C%E9%80%BB%E8%BE%91/ title=阅读次数><span class=post-meta-item-icon><i class="far fa-eye"></i> </span><span class=post-meta-item-text>阅读次数：</span> <span class=leancloud-visitors-count></span> </span><span class=post-meta-item><span class=post-meta-item-icon><i class="far fa-comment"></i> </span><span class=post-meta-item-text>Disqus：</span> <a href=/2023/08/13/springboot-mappings-%E6%B3%A8%E5%86%8C%E9%80%BB%E8%BE%91/#disqus_thread itemprop=discussionUrl title=disqus><span class="post-comments-count disqus-comment-count" data-disqus-identifier=2023/08/13/springboot-mappings-注册逻辑/ itemprop=commentCount></span></a></span></div></div></header><div class=post-body itemprop=articleBody><p>前面讲了怎么获取 mapping url，继续说下这些mappings 是怎么注册进去的，<br>来看下这个 <code>RequestMappingHandlerMapping</code> 的继承关系<br><img data-src=https://img.nicksxs.com/blog/76d96T.png><br>可以看到这个类实现了 <code>org.springframework.beans.factory.InitializingBean</code> 这个接口，然后这个 <code>InitializingBean</code> 提供了 <code>org.springframework.beans.factory.InitializingBean#afterPropertiesSet</code> 接口，可以在 bean 初始化后做一些属性设置等，<br>这里是调用了类本身的 afterPropertiesSet 方法和父类的<pre class="line-numbers language-java" data-language=java><code class=language-java><span class="token keyword">public</span> <span class="token keyword">void</span> <span class="token function">afterPropertiesSet</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>config <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">RequestMappingInfo<span class="token punctuation">.</span>BuilderConfiguration</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>config<span class="token punctuation">.</span><span class="token function">setUrlPathHelper</span><span class="token punctuation">(</span><span class="token function">getUrlPathHelper</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>config<span class="token punctuation">.</span><span class="token function">setPathMatcher</span><span class="token punctuation">(</span><span class="token function">getPathMatcher</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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|
<span class="token keyword">this</span><span class="token punctuation">.</span>config<span class="token punctuation">.</span><span class="token function">setSuffixPatternMatch</span><span class="token punctuation">(</span><span class="token function">useSuffixPatternMatch</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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|
<span class="token keyword">this</span><span class="token punctuation">.</span>config<span class="token punctuation">.</span><span class="token function">setTrailingSlashMatch</span><span class="token punctuation">(</span><span class="token function">useTrailingSlashMatch</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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|
<span class="token keyword">this</span><span class="token punctuation">.</span>config<span class="token punctuation">.</span><span class="token function">setRegisteredSuffixPatternMatch</span><span class="token punctuation">(</span><span class="token function">useRegisteredSuffixPatternMatch</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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|
<span class="token keyword">this</span><span class="token punctuation">.</span>config<span class="token punctuation">.</span><span class="token function">setContentNegotiationManager</span><span class="token punctuation">(</span><span class="token function">getContentNegotiationManager</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">super</span><span class="token punctuation">.</span><span class="token function">afterPropertiesSet</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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|
<span class="token punctuation">}</span><span aria-hidden=true class=line-numbers-rows><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre><p>父类是 <code>org.springframework.web.servlet.handler.AbstractHandlerMethodMapping#afterPropertiesSet</code><br>具体代码很简略，就是初始化 HandlerMethod<pre class="line-numbers language-java" data-language=java><code class=language-java><span class="token annotation punctuation">@Override</span>
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|
<span class="token keyword">public</span> <span class="token keyword">void</span> <span class="token function">afterPropertiesSet</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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|
<span class="token function">initHandlerMethods</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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|
<span class="token punctuation">}</span><span aria-hidden=true class=line-numbers-rows><span></span><span></span><span></span><span></span></span></code></pre><p>也就是调用了 <code>org.springframework.web.servlet.handler.AbstractHandlerMethodMapping#initHandlerMethods</code><pre class="line-numbers language-java" data-language=java><code class=language-java><span class="token keyword">protected</span> <span class="token keyword">void</span> <span class="token function">initHandlerMethods</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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|
<span class="token keyword">for</span> <span class="token punctuation">(</span><span class="token class-name">String</span> beanName <span class="token operator">:</span> <span class="token function">getCandidateBeanNames</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token keyword">if</span> <span class="token punctuation">(</span><span class="token operator">!</span>beanName<span class="token punctuation">.</span><span class="token function">startsWith</span><span class="token punctuation">(</span><span class="token constant">SCOPED_TARGET_NAME_PREFIX</span><span class="token punctuation">)</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token function">processCandidateBean</span><span class="token punctuation">(</span>beanName<span class="token punctuation">)</span><span class="token punctuation">;</span>
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|
<span class="token punctuation">}</span>
|
|
<span class="token punctuation">}</span>
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|
<span class="token function">handlerMethodsInitialized</span><span class="token punctuation">(</span><span class="token function">getHandlerMethods</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span><span aria-hidden=true class=line-numbers-rows><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre><p>然后就是调用 <code>org.springframework.web.servlet.handler.AbstractHandlerMethodMapping#processCandidateBean</code><pre class="line-numbers language-java" data-language=java><code class=language-java><span class="token keyword">protected</span> <span class="token keyword">void</span> <span class="token function">processCandidateBean</span><span class="token punctuation">(</span><span class="token class-name">String</span> beanName<span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token class-name">Class</span><span class="token generics"><span class="token punctuation"><</span><span class="token operator">?</span><span class="token punctuation">></span></span> beanType <span class="token operator">=</span> <span class="token keyword">null</span><span class="token punctuation">;</span>
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<span class="token keyword">try</span> <span class="token punctuation">{</span>
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beanType <span class="token operator">=</span> <span class="token function">obtainApplicationContext</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">getType</span><span class="token punctuation">(</span>beanName<span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span>
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<span class="token keyword">catch</span> <span class="token punctuation">(</span><span class="token class-name">Throwable</span> ex<span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token comment">// An unresolvable bean type, probably from a lazy bean - let's ignore it.</span>
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<span class="token keyword">if</span> <span class="token punctuation">(</span>logger<span class="token punctuation">.</span><span class="token function">isTraceEnabled</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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logger<span class="token punctuation">.</span><span class="token function">trace</span><span class="token punctuation">(</span><span class="token string">"Could not resolve type for bean '"</span> <span class="token operator">+</span> beanName <span class="token operator">+</span> <span class="token string">"'"</span><span class="token punctuation">,</span> ex<span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span>
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<span class="token punctuation">}</span>
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<span class="token keyword">if</span> <span class="token punctuation">(</span>beanType <span class="token operator">!=</span> <span class="token keyword">null</span> <span class="token operator">&&</span> <span class="token function">isHandler</span><span class="token punctuation">(</span>beanType<span class="token punctuation">)</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token function">detectHandlerMethods</span><span class="token punctuation">(</span>beanName<span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span>
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<span class="token punctuation">}</span><span aria-hidden=true class=line-numbers-rows><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre><p>先是获取的 beanType，在判断 beanType 是不是 Handler，通过方法 <code>org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping#isHandler</code><pre class="line-numbers language-java" data-language=java><code class=language-java><span class="token annotation punctuation">@Override</span>
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<span class="token keyword">protected</span> <span class="token keyword">boolean</span> <span class="token function">isHandler</span><span class="token punctuation">(</span><span class="token class-name">Class</span><span class="token generics"><span class="token punctuation"><</span><span class="token operator">?</span><span class="token punctuation">></span></span> beanType<span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token keyword">return</span> <span class="token punctuation">(</span><span class="token class-name">AnnotatedElementUtils</span><span class="token punctuation">.</span><span class="token function">hasAnnotation</span><span class="token punctuation">(</span>beanType<span class="token punctuation">,</span> <span class="token class-name">Controller</span><span class="token punctuation">.</span><span class="token keyword">class</span><span class="token punctuation">)</span> <span class="token operator">||</span>
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<span class="token class-name">AnnotatedElementUtils</span><span class="token punctuation">.</span><span class="token function">hasAnnotation</span><span class="token punctuation">(</span>beanType<span class="token punctuation">,</span> <span class="token class-name">RequestMapping</span><span class="token punctuation">.</span><span class="token keyword">class</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span><span aria-hidden=true class=line-numbers-rows><span></span><span></span><span></span><span></span><span></span></span></code></pre><p>就很简单，判断是不是有 Controller 注解或者 RequestMapping 注解<br>然后就是判断 HandlerMethod 了，调用了 <code>org.springframework.web.servlet.handler.AbstractHandlerMethodMapping#detectHandlerMethods</code><pre class="line-numbers language-java" data-language=java><code class=language-java><span class="token keyword">protected</span> <span class="token keyword">void</span> <span class="token function">detectHandlerMethods</span><span class="token punctuation">(</span><span class="token class-name">Object</span> handler<span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token class-name">Class</span><span class="token generics"><span class="token punctuation"><</span><span class="token operator">?</span><span class="token punctuation">></span></span> handlerType <span class="token operator">=</span> <span class="token punctuation">(</span>handler <span class="token keyword">instanceof</span> <span class="token class-name">String</span> <span class="token operator">?</span>
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<span class="token function">obtainApplicationContext</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">getType</span><span class="token punctuation">(</span><span class="token punctuation">(</span><span class="token class-name">String</span><span class="token punctuation">)</span> handler<span class="token punctuation">)</span> <span class="token operator">:</span> handler<span class="token punctuation">.</span><span class="token function">getClass</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">if</span> <span class="token punctuation">(</span>handlerType <span class="token operator">!=</span> <span class="token keyword">null</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token class-name">Class</span><span class="token generics"><span class="token punctuation"><</span><span class="token operator">?</span><span class="token punctuation">></span></span> userType <span class="token operator">=</span> <span class="token class-name">ClassUtils</span><span class="token punctuation">.</span><span class="token function">getUserClass</span><span class="token punctuation">(</span>handlerType<span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token class-name">Map</span><span class="token generics"><span class="token punctuation"><</span><span class="token class-name">Method</span><span class="token punctuation">,</span> <span class="token class-name">T</span><span class="token punctuation">></span></span> methods <span class="token operator">=</span> <span class="token class-name">MethodIntrospector</span><span class="token punctuation">.</span><span class="token function">selectMethods</span><span class="token punctuation">(</span>userType<span class="token punctuation">,</span>
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<span class="token punctuation">(</span><span class="token class-name">MethodIntrospector<span class="token punctuation">.</span>MetadataLookup</span><span class="token generics"><span class="token punctuation"><</span><span class="token class-name">T</span><span class="token punctuation">></span></span><span class="token punctuation">)</span> method <span class="token operator">-></span> <span class="token punctuation">{</span>
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<span class="token keyword">try</span> <span class="token punctuation">{</span>
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<span class="token keyword">return</span> <span class="token function">getMappingForMethod</span><span class="token punctuation">(</span>method<span class="token punctuation">,</span> userType<span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span>
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<span class="token keyword">catch</span> <span class="token punctuation">(</span><span class="token class-name">Throwable</span> ex<span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token keyword">throw</span> <span class="token keyword">new</span> <span class="token class-name">IllegalStateException</span><span class="token punctuation">(</span><span class="token string">"Invalid mapping on handler class ["</span> <span class="token operator">+</span>
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userType<span class="token punctuation">.</span><span class="token function">getName</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token operator">+</span> <span class="token string">"]: "</span> <span class="token operator">+</span> method<span class="token punctuation">,</span> ex<span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span>
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<span class="token punctuation">}</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">if</span> <span class="token punctuation">(</span>logger<span class="token punctuation">.</span><span class="token function">isTraceEnabled</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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logger<span class="token punctuation">.</span><span class="token function">trace</span><span class="token punctuation">(</span><span class="token function">formatMappings</span><span class="token punctuation">(</span>userType<span class="token punctuation">,</span> methods<span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span>
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methods<span class="token punctuation">.</span><span class="token function">forEach</span><span class="token punctuation">(</span><span class="token punctuation">(</span>method<span class="token punctuation">,</span> mapping<span class="token punctuation">)</span> <span class="token operator">-></span> <span class="token punctuation">{</span>
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<span class="token class-name">Method</span> invocableMethod <span class="token operator">=</span> <span class="token class-name">AopUtils</span><span class="token punctuation">.</span><span class="token function">selectInvocableMethod</span><span class="token punctuation">(</span>method<span class="token punctuation">,</span> userType<span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token function">registerHandlerMethod</span><span class="token punctuation">(</span>handler<span class="token punctuation">,</span> invocableMethod<span class="token punctuation">,</span> mapping<span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span>
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<span class="token punctuation">}</span><span aria-hidden=true class=line-numbers-rows><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre><p>前面先通过 getMappingForMethod 找出有 Mapping 的方法，<pre class="line-numbers language-java" data-language=java><code class=language-java><span class="token annotation punctuation">@Override</span>
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<span class="token annotation punctuation">@Nullable</span>
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<span class="token keyword">protected</span> <span class="token class-name">RequestMappingInfo</span> <span class="token function">getMappingForMethod</span><span class="token punctuation">(</span><span class="token class-name">Method</span> method<span class="token punctuation">,</span> <span class="token class-name">Class</span><span class="token generics"><span class="token punctuation"><</span><span class="token operator">?</span><span class="token punctuation">></span></span> handlerType<span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token class-name">RequestMappingInfo</span> info <span class="token operator">=</span> <span class="token function">createRequestMappingInfo</span><span class="token punctuation">(</span>method<span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">if</span> <span class="token punctuation">(</span>info <span class="token operator">!=</span> <span class="token keyword">null</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token class-name">RequestMappingInfo</span> typeInfo <span class="token operator">=</span> <span class="token function">createRequestMappingInfo</span><span class="token punctuation">(</span>handlerType<span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">if</span> <span class="token punctuation">(</span>typeInfo <span class="token operator">!=</span> <span class="token keyword">null</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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info <span class="token operator">=</span> typeInfo<span class="token punctuation">.</span><span class="token function">combine</span><span class="token punctuation">(</span>info<span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span>
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<span class="token class-name">String</span> prefix <span class="token operator">=</span> <span class="token function">getPathPrefix</span><span class="token punctuation">(</span>handlerType<span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">if</span> <span class="token punctuation">(</span>prefix <span class="token operator">!=</span> <span class="token keyword">null</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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info <span class="token operator">=</span> <span class="token class-name">RequestMappingInfo</span><span class="token punctuation">.</span><span class="token function">paths</span><span class="token punctuation">(</span>prefix<span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">options</span><span class="token punctuation">(</span><span class="token keyword">this</span><span class="token punctuation">.</span>config<span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">build</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">combine</span><span class="token punctuation">(</span>info<span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span>
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<span class="token punctuation">}</span>
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<span class="token keyword">return</span> info<span class="token punctuation">;</span>
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<span class="token punctuation">}</span><span aria-hidden=true class=line-numbers-rows><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre><pre class="line-numbers language-java" data-language=java><code class=language-java><span class="token annotation punctuation">@Nullable</span>
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<span class="token keyword">private</span> <span class="token class-name">RequestMappingInfo</span> <span class="token function">createRequestMappingInfo</span><span class="token punctuation">(</span><span class="token class-name">AnnotatedElement</span> element<span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token class-name">RequestMapping</span> requestMapping <span class="token operator">=</span> <span class="token class-name">AnnotatedElementUtils</span><span class="token punctuation">.</span><span class="token function">findMergedAnnotation</span><span class="token punctuation">(</span>element<span class="token punctuation">,</span> <span class="token class-name">RequestMapping</span><span class="token punctuation">.</span><span class="token keyword">class</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token class-name">RequestCondition</span><span class="token generics"><span class="token punctuation"><</span><span class="token operator">?</span><span class="token punctuation">></span></span> condition <span class="token operator">=</span> <span class="token punctuation">(</span>element <span class="token keyword">instanceof</span> <span class="token class-name">Class</span> <span class="token operator">?</span>
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<span class="token function">getCustomTypeCondition</span><span class="token punctuation">(</span><span class="token punctuation">(</span><span class="token class-name">Class</span><span class="token generics"><span class="token punctuation"><</span><span class="token operator">?</span><span class="token punctuation">></span></span><span class="token punctuation">)</span> element<span class="token punctuation">)</span> <span class="token operator">:</span> <span class="token function">getCustomMethodCondition</span><span class="token punctuation">(</span><span class="token punctuation">(</span><span class="token class-name">Method</span><span class="token punctuation">)</span> element<span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">return</span> <span class="token punctuation">(</span>requestMapping <span class="token operator">!=</span> <span class="token keyword">null</span> <span class="token operator">?</span> <span class="token function">createRequestMappingInfo</span><span class="token punctuation">(</span>requestMapping<span class="token punctuation">,</span> condition<span class="token punctuation">)</span> <span class="token operator">:</span> <span class="token keyword">null</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span><span aria-hidden=true class=line-numbers-rows><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre><p>然后再是对 Method 循环调用 <code>org.springframework.web.servlet.handler.AbstractHandlerMethodMapping#registerHandlerMethod</code><br>可以看到就是上一篇的 <code>org.springframework.web.servlet.handler.AbstractHandlerMethodMapping#mappingRegistry</code> 去存储映射信息<pre class="line-numbers language-java" data-language=java><code class=language-java><span class="token keyword">protected</span> <span class="token keyword">void</span> <span class="token function">registerHandlerMethod</span><span class="token punctuation">(</span><span class="token class-name">Object</span> handler<span class="token punctuation">,</span> <span class="token class-name">Method</span> method<span class="token punctuation">,</span> <span class="token class-name">T</span> mapping<span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>mappingRegistry<span class="token punctuation">.</span><span class="token function">register</span><span class="token punctuation">(</span>mapping<span class="token punctuation">,</span> handler<span class="token punctuation">,</span> method<span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span><span aria-hidden=true class=line-numbers-rows><span></span><span></span><span></span></span></code></pre><p>最后是真的注册逻辑<pre class="line-numbers language-java" data-language=java><code class=language-java><span class="token keyword">public</span> <span class="token keyword">void</span> <span class="token function">register</span><span class="token punctuation">(</span><span class="token class-name">T</span> mapping<span class="token punctuation">,</span> <span class="token class-name">Object</span> handler<span class="token punctuation">,</span> <span class="token class-name">Method</span> method<span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token comment">// Assert that the handler method is not a suspending one.</span>
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<span class="token keyword">if</span> <span class="token punctuation">(</span><span class="token class-name">KotlinDetector</span><span class="token punctuation">.</span><span class="token function">isKotlinType</span><span class="token punctuation">(</span>method<span class="token punctuation">.</span><span class="token function">getDeclaringClass</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token class-name">Class</span><span class="token generics"><span class="token punctuation"><</span><span class="token operator">?</span><span class="token punctuation">></span></span><span class="token punctuation">[</span><span class="token punctuation">]</span> parameterTypes <span class="token operator">=</span> method<span class="token punctuation">.</span><span class="token function">getParameterTypes</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">if</span> <span class="token punctuation">(</span><span class="token punctuation">(</span>parameterTypes<span class="token punctuation">.</span>length <span class="token operator">></span> <span class="token number">0</span><span class="token punctuation">)</span> <span class="token operator">&&</span> <span class="token string">"kotlin.coroutines.Continuation"</span><span class="token punctuation">.</span><span class="token function">equals</span><span class="token punctuation">(</span>parameterTypes<span class="token punctuation">[</span>parameterTypes<span class="token punctuation">.</span>length <span class="token operator">-</span> <span class="token number">1</span><span class="token punctuation">]</span><span class="token punctuation">.</span><span class="token function">getName</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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|
<span class="token keyword">throw</span> <span class="token keyword">new</span> <span class="token class-name">IllegalStateException</span><span class="token punctuation">(</span><span class="token string">"Unsupported suspending handler method detected: "</span> <span class="token operator">+</span> method<span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span>
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<span class="token punctuation">}</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>readWriteLock<span class="token punctuation">.</span><span class="token function">writeLock</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">lock</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">try</span> <span class="token punctuation">{</span>
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<span class="token class-name">HandlerMethod</span> handlerMethod <span class="token operator">=</span> <span class="token function">createHandlerMethod</span><span class="token punctuation">(</span>handler<span class="token punctuation">,</span> method<span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token function">validateMethodMapping</span><span class="token punctuation">(</span>handlerMethod<span class="token punctuation">,</span> mapping<span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>mappingLookup<span class="token punctuation">.</span><span class="token function">put</span><span class="token punctuation">(</span>mapping<span class="token punctuation">,</span> handlerMethod<span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token class-name">List</span><span class="token generics"><span class="token punctuation"><</span><span class="token class-name">String</span><span class="token punctuation">></span></span> directUrls <span class="token operator">=</span> <span class="token function">getDirectUrls</span><span class="token punctuation">(</span>mapping<span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">for</span> <span class="token punctuation">(</span><span class="token class-name">String</span> url <span class="token operator">:</span> directUrls<span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>urlLookup<span class="token punctuation">.</span><span class="token function">add</span><span class="token punctuation">(</span>url<span class="token punctuation">,</span> mapping<span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span>
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<span class="token class-name">String</span> name <span class="token operator">=</span> <span class="token keyword">null</span><span class="token punctuation">;</span>
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<span class="token keyword">if</span> <span class="token punctuation">(</span><span class="token function">getNamingStrategy</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token operator">!=</span> <span class="token keyword">null</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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name <span class="token operator">=</span> <span class="token function">getNamingStrategy</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">getName</span><span class="token punctuation">(</span>handlerMethod<span class="token punctuation">,</span> mapping<span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token function">addMappingName</span><span class="token punctuation">(</span>name<span class="token punctuation">,</span> handlerMethod<span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span>
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<span class="token class-name">CorsConfiguration</span> corsConfig <span class="token operator">=</span> <span class="token function">initCorsConfiguration</span><span class="token punctuation">(</span>handler<span class="token punctuation">,</span> method<span class="token punctuation">,</span> mapping<span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">if</span> <span class="token punctuation">(</span>corsConfig <span class="token operator">!=</span> <span class="token keyword">null</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>corsLookup<span class="token punctuation">.</span><span class="token function">put</span><span class="token punctuation">(</span>handlerMethod<span class="token punctuation">,</span> corsConfig<span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>registry<span class="token punctuation">.</span><span class="token function">put</span><span class="token punctuation">(</span>mapping<span class="token punctuation">,</span> <span class="token keyword">new</span> <span class="token class-name">MappingRegistration</span><span class="token generics"><span class="token punctuation"><</span><span class="token punctuation">></span></span><span class="token punctuation">(</span>mapping<span class="token punctuation">,</span> handlerMethod<span class="token punctuation">,</span> directUrls<span class="token punctuation">,</span> name<span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span>
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<span class="token keyword">finally</span> <span class="token punctuation">{</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>readWriteLock<span class="token punctuation">.</span><span class="token function">writeLock</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">unlock</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span>
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<span class="token punctuation">}</span><span aria-hidden=true class=line-numbers-rows><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre><p>底层的存储就是上一篇说的 mappingLookup 来存储信息</div><footer class=post-footer><div class=post-eof></div></footer></article></div><div class=post-block><article class=post-content itemscope itemtype=http://schema.org/Article><link href=https://nicksxs.me/2023/08/06/springboot-%E8%8E%B7%E5%8F%96-web-%E5%BA%94%E7%94%A8%E4%B8%AD%E6%89%80%E6%9C%89%E7%9A%84%E6%8E%A5%E5%8F%A3-url/ itemprop=mainEntityOfPage><span hidden itemprop=author itemscope itemtype=http://schema.org/Person><meta content=/uploads/avatar.jpg itemprop=image><meta content=Nicksxs itemprop=name></span><span hidden itemprop=publisher itemscope itemtype=http://schema.org/Organization><meta content="Nicksxs's Blog" itemprop=name><meta content="learn from zero,技术博客，Nicksxs，史学森" itemprop=description></span><span hidden itemprop=post itemscope itemtype=http://schema.org/CreativeWork><meta content="undefined | Nicksxs's Blog" itemprop=name><meta itemprop=description></span><header class=post-header><h2 itemprop="name headline" class=post-title><a class=post-title-link href=/2023/08/06/springboot-%E8%8E%B7%E5%8F%96-web-%E5%BA%94%E7%94%A8%E4%B8%AD%E6%89%80%E6%9C%89%E7%9A%84%E6%8E%A5%E5%8F%A3-url/ itemprop=url>springboot 获取 web 应用中所有的接口 url</a></h2><div class=post-meta-container><div class=post-meta><span class=post-meta-item><span class=post-meta-item-icon><i class="far fa-calendar"></i> </span><span class=post-meta-item-text>发表于</span> <time itemprop="dateCreated datePublished" title="创建时间：2023-08-06 21:16:36 / 修改时间：21:17:46" datetime=2023-08-06T21:16:36+08:00>2023-08-06</time> </span><span class=post-meta-item><span class=post-meta-item-icon><i class="far fa-folder"></i> </span><span class=post-meta-item-text>分类于</span> <span itemprop=about itemscope itemtype=http://schema.org/Thing><a href=/categories/Java/ itemprop=url rel=index><span itemprop=name>Java</span></a> </span>， <span itemprop=about itemscope itemtype=http://schema.org/Thing><a href=/categories/Java/SpringBoot/ itemprop=url rel=index><span itemprop=name>SpringBoot</span></a> </span></span><span class="post-meta-item leancloud_visitors" data-flag-title="springboot 获取 web 应用中所有的接口 url" id=/2023/08/06/springboot-%E8%8E%B7%E5%8F%96-web-%E5%BA%94%E7%94%A8%E4%B8%AD%E6%89%80%E6%9C%89%E7%9A%84%E6%8E%A5%E5%8F%A3-url/ title=阅读次数><span class=post-meta-item-icon><i class="far fa-eye"></i> </span><span class=post-meta-item-text>阅读次数：</span> <span class=leancloud-visitors-count></span> </span><span class=post-meta-item><span class=post-meta-item-icon><i class="far fa-comment"></i> </span><span class=post-meta-item-text>Disqus：</span> <a href=/2023/08/06/springboot-%E8%8E%B7%E5%8F%96-web-%E5%BA%94%E7%94%A8%E4%B8%AD%E6%89%80%E6%9C%89%E7%9A%84%E6%8E%A5%E5%8F%A3-url/#disqus_thread itemprop=discussionUrl title=disqus><span class="post-comments-count disqus-comment-count" data-disqus-identifier=2023/08/06/springboot-获取-web-应用中所有的接口-url/ itemprop=commentCount></span></a></span></div></div></header><div class=post-body itemprop=articleBody><p>最近有个小需求，要把我们一个 springboot 应用的 request mapping 给导出来，这么说已经是转化过了的，应该是要整理这个应用所有的接口路径，比如我有一个 api.baidu1.com 作为接口域名，然后这个域名下有很多个接口提供服务，这些接口都是写在一个 springboot 应用里，如果本身有网关管理这些接口转发的其实可以通过网关的数据输出，这里就介绍下通过代码来获取<pre class="line-numbers language-java" data-language=java><code class=language-java><span class="token class-name">RequestMappingHandlerMapping</span> mapping <span class="token operator">=</span> appContext<span class="token punctuation">.</span><span class="token function">getBean</span><span class="token punctuation">(</span><span class="token class-name">RequestMappingHandlerMapping</span><span class="token punctuation">.</span><span class="token keyword">class</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token class-name">Map</span><span class="token generics"><span class="token punctuation"><</span><span class="token class-name">RequestMappingInfo</span><span class="token punctuation">,</span> <span class="token class-name">HandlerMethod</span><span class="token punctuation">></span></span> map <span class="token operator">=</span> mapping<span class="token punctuation">.</span><span class="token function">getHandlerMethods</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">for</span> <span class="token punctuation">(</span><span class="token class-name">Map<span class="token punctuation">.</span>Entry</span><span class="token generics"><span class="token punctuation"><</span><span class="token class-name">RequestMappingInfo</span><span class="token punctuation">,</span> <span class="token class-name">HandlerMethod</span><span class="token punctuation">></span></span> entry <span class="token operator">:</span> map<span class="token punctuation">.</span><span class="token function">entrySet</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token class-name">Set</span><span class="token generics"><span class="token punctuation"><</span><span class="token class-name">String</span><span class="token punctuation">></span></span> urlSet <span class="token operator">=</span> entry<span class="token punctuation">.</span><span class="token function">getKey</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">getPatternsCondition</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">getPatterns</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">for</span> <span class="token punctuation">(</span><span class="token class-name">String</span> url <span class="token operator">:</span> urlSet<span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token class-name">System</span><span class="token punctuation">.</span>out<span class="token punctuation">.</span><span class="token function">println</span><span class="token punctuation">(</span>url<span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span>
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<span class="token punctuation">}</span><span aria-hidden=true class=line-numbers-rows><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre><h1 id=第一行><a class=headerlink href=#第一行 title=第一行></a>第一行</h1><p>逐行来解析下，第一行就是从上下文中获取 <code>RequestMappingHandlerMapping</code> 这个 bean，<h1 id=第二行><a class=headerlink href=#第二行 title=第二行></a>第二行</h1><p>然后调用了 <code>getHandlerMethods</code>,<br>这里面具体执行了<pre class="line-numbers language-java" data-language=java><code class=language-java><span class="token keyword">public</span> <span class="token class-name">Map</span><span class="token generics"><span class="token punctuation"><</span><span class="token class-name">T</span><span class="token punctuation">,</span> <span class="token class-name">HandlerMethod</span><span class="token punctuation">></span></span> <span class="token function">getHandlerMethods</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>mappingRegistry<span class="token punctuation">.</span><span class="token function">acquireReadLock</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">try</span> <span class="token punctuation">{</span>
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<span class="token keyword">return</span> <span class="token class-name">Collections</span><span class="token punctuation">.</span><span class="token function">unmodifiableMap</span><span class="token punctuation">(</span><span class="token keyword">this</span><span class="token punctuation">.</span>mappingRegistry<span class="token punctuation">.</span><span class="token function">getMappings</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span>
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<span class="token keyword">finally</span> <span class="token punctuation">{</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>mappingRegistry<span class="token punctuation">.</span><span class="token function">releaseReadLock</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span>
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<span class="token punctuation">}</span><span aria-hidden=true class=line-numbers-rows><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre><p>前后加了锁，重要的就是从 <code>mappingRegistry</code> 中获取 <code>mappings</code>, 这里获取的就是<br><code>org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.MappingRegistry#getMappings</code> 具体的代码<pre class="line-numbers language-java" data-language=java><code class=language-java><span class="token keyword">public</span> <span class="token class-name">Map</span><span class="token generics"><span class="token punctuation"><</span><span class="token class-name">T</span><span class="token punctuation">,</span> <span class="token class-name">HandlerMethod</span><span class="token punctuation">></span></span> <span class="token function">getMappings</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token keyword">return</span> <span class="token keyword">this</span><span class="token punctuation">.</span>mappingLookup<span class="token punctuation">;</span>
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<span class="token punctuation">}</span><span aria-hidden=true class=line-numbers-rows><span></span><span></span><span></span></span></code></pre><p>而这个 mappingLookup 再来看下<pre class="line-numbers language-java" data-language=java><code class=language-java><span class="token keyword">class</span> <span class="token class-name">MappingRegistry</span> <span class="token punctuation">{</span>
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<span class="token keyword">private</span> <span class="token keyword">final</span> <span class="token class-name">Map</span><span class="token generics"><span class="token punctuation"><</span><span class="token class-name">T</span><span class="token punctuation">,</span> <span class="token class-name">MappingRegistration</span><span class="token punctuation"><</span><span class="token class-name">T</span><span class="token punctuation">></span><span class="token punctuation">></span></span> registry <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">HashMap</span><span class="token generics"><span class="token punctuation"><</span><span class="token punctuation">></span></span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">private</span> <span class="token keyword">final</span> <span class="token class-name">Map</span><span class="token generics"><span class="token punctuation"><</span><span class="token class-name">T</span><span class="token punctuation">,</span> <span class="token class-name">HandlerMethod</span><span class="token punctuation">></span></span> mappingLookup <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">LinkedHashMap</span><span class="token generics"><span class="token punctuation"><</span><span class="token punctuation">></span></span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span><span aria-hidden=true class=line-numbers-rows><span></span><span></span><span></span><span></span><span></span></span></code></pre><p>可以看到就是在 MappingRegistry 中的一个变量，至于这个变量是怎么来的，简单的考虑下 springboot 处理请求的流程，就是从 Mapping 去找到对应的 Handler，所以就需要提前将这个对应关系存到这个变量里，<br>具体可以看这 <code>org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.MappingRegistry#register</code><pre class="line-numbers language-java" data-language=java><code class=language-java><span class="token keyword">public</span> <span class="token keyword">void</span> <span class="token function">register</span><span class="token punctuation">(</span><span class="token class-name">T</span> mapping<span class="token punctuation">,</span> <span class="token class-name">Object</span> handler<span class="token punctuation">,</span> <span class="token class-name">Method</span> method<span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token comment">// Assert that the handler method is not a suspending one.</span>
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<span class="token keyword">if</span> <span class="token punctuation">(</span><span class="token class-name">KotlinDetector</span><span class="token punctuation">.</span><span class="token function">isKotlinType</span><span class="token punctuation">(</span>method<span class="token punctuation">.</span><span class="token function">getDeclaringClass</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token class-name">Class</span><span class="token generics"><span class="token punctuation"><</span><span class="token operator">?</span><span class="token punctuation">></span></span><span class="token punctuation">[</span><span class="token punctuation">]</span> parameterTypes <span class="token operator">=</span> method<span class="token punctuation">.</span><span class="token function">getParameterTypes</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">if</span> <span class="token punctuation">(</span><span class="token punctuation">(</span>parameterTypes<span class="token punctuation">.</span>length <span class="token operator">></span> <span class="token number">0</span><span class="token punctuation">)</span> <span class="token operator">&&</span> <span class="token string">"kotlin.coroutines.Continuation"</span><span class="token punctuation">.</span><span class="token function">equals</span><span class="token punctuation">(</span>parameterTypes<span class="token punctuation">[</span>parameterTypes<span class="token punctuation">.</span>length <span class="token operator">-</span> <span class="token number">1</span><span class="token punctuation">]</span><span class="token punctuation">.</span><span class="token function">getName</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token keyword">throw</span> <span class="token keyword">new</span> <span class="token class-name">IllegalStateException</span><span class="token punctuation">(</span><span class="token string">"Unsupported suspending handler method detected: "</span> <span class="token operator">+</span> method<span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span>
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<span class="token punctuation">}</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>readWriteLock<span class="token punctuation">.</span><span class="token function">writeLock</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">lock</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">try</span> <span class="token punctuation">{</span>
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<span class="token class-name">HandlerMethod</span> handlerMethod <span class="token operator">=</span> <span class="token function">createHandlerMethod</span><span class="token punctuation">(</span>handler<span class="token punctuation">,</span> method<span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token function">validateMethodMapping</span><span class="token punctuation">(</span>handlerMethod<span class="token punctuation">,</span> mapping<span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">this</span><span class="token punctuation">.</span>mappingLookup<span class="token punctuation">.</span><span class="token function">put</span><span class="token punctuation">(</span>mapping<span class="token punctuation">,</span> handlerMethod<span class="token punctuation">)</span><span class="token punctuation">;</span> <span aria-hidden=true class=line-numbers-rows><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre><p>就是在这里会把 mapping 和 handleMethod 对应关系存进去<h1 id=第三行><a class=headerlink href=#第三行 title=第三行></a>第三行</h1><p>这里拿的是上面的 <code>map</code> 里的 <code>key</code>，也就是 <code>RequestMappingInfo</code> 也就是 <code>org.springframework.web.servlet.mvc.method.RequestMappingInfo</code><br>而真的 url 就存在 <code>org.springframework.web.servlet.mvc.condition.PatternsRequestCondition</code><br>最终这里面的patterns就是我们要的路径<pre class="line-numbers language-java" data-language=java><code class=language-java><span class="token keyword">public</span> <span class="token keyword">class</span> <span class="token class-name">PatternsRequestCondition</span> <span class="token keyword">extends</span> <span class="token class-name">AbstractRequestCondition</span><span class="token generics"><span class="token punctuation"><</span><span class="token class-name">PatternsRequestCondition</span><span class="token punctuation">></span></span> <span class="token punctuation">{</span>
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<span class="token keyword">private</span> <span class="token keyword">final</span> <span class="token keyword">static</span> <span class="token class-name">Set</span><span class="token generics"><span class="token punctuation"><</span><span class="token class-name">String</span><span class="token punctuation">></span></span> <span class="token constant">EMPTY_PATH_PATTERN</span> <span class="token operator">=</span> <span class="token class-name">Collections</span><span class="token punctuation">.</span><span class="token function">singleton</span><span class="token punctuation">(</span><span class="token string">""</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">private</span> <span class="token keyword">final</span> <span class="token class-name">Set</span><span class="token generics"><span class="token punctuation"><</span><span class="token class-name">String</span><span class="token punctuation">></span></span> patterns<span class="token punctuation">;</span><span aria-hidden=true class=line-numbers-rows><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre><p>写到这下一篇是不是可以介绍下 mapping 的具体注册逻辑</div><footer class=post-footer><div class=post-eof></div></footer></article></div><div class=post-block><article class=post-content itemscope itemtype=http://schema.org/Article><link href=https://nicksxs.me/2023/07/29/java-%E4%B8%AD%E5%8F%91%E8%B5%B7-http-%E8%AF%B7%E6%B1%82%E6%97%B6%E8%AF%81%E4%B9%A6%E9%97%AE%E9%A2%98%E8%A7%A3%E5%86%B3%E8%AE%B0%E5%BD%95/ itemprop=mainEntityOfPage><span hidden itemprop=author itemscope itemtype=http://schema.org/Person><meta content=/uploads/avatar.jpg itemprop=image><meta content=Nicksxs itemprop=name></span><span hidden itemprop=publisher itemscope itemtype=http://schema.org/Organization><meta content="Nicksxs's Blog" itemprop=name><meta content="learn from zero,技术博客，Nicksxs，史学森" itemprop=description></span><span hidden itemprop=post itemscope itemtype=http://schema.org/CreativeWork><meta content="undefined | Nicksxs's Blog" itemprop=name><meta itemprop=description></span><header class=post-header><h2 itemprop="name headline" class=post-title><a class=post-title-link href=/2023/07/29/java-%E4%B8%AD%E5%8F%91%E8%B5%B7-http-%E8%AF%B7%E6%B1%82%E6%97%B6%E8%AF%81%E4%B9%A6%E9%97%AE%E9%A2%98%E8%A7%A3%E5%86%B3%E8%AE%B0%E5%BD%95/ itemprop=url>java 中发起 http 请求时证书问题解决记录</a></h2><div class=post-meta-container><div class=post-meta><span class=post-meta-item><span class=post-meta-item-icon><i class="far fa-calendar"></i> </span><span class=post-meta-item-text>发表于</span> <time itemprop="dateCreated datePublished" title="创建时间：2023-07-29 15:43:53" datetime=2023-07-29T15:43:53+08:00>2023-07-29</time> </span><span class=post-meta-item><span class=post-meta-item-icon><i class="far fa-folder"></i> </span><span class=post-meta-item-text>分类于</span> <span itemprop=about itemscope itemtype=http://schema.org/Thing><a href=/categories/java/ itemprop=url rel=index><span itemprop=name>java</span></a> </span></span><span class="post-meta-item leancloud_visitors" data-flag-title="java 中发起 http 请求时证书问题解决记录" id=/2023/07/29/java-%E4%B8%AD%E5%8F%91%E8%B5%B7-http-%E8%AF%B7%E6%B1%82%E6%97%B6%E8%AF%81%E4%B9%A6%E9%97%AE%E9%A2%98%E8%A7%A3%E5%86%B3%E8%AE%B0%E5%BD%95/ title=阅读次数><span class=post-meta-item-icon><i class="far fa-eye"></i> </span><span class=post-meta-item-text>阅读次数：</span> <span class=leancloud-visitors-count></span> </span><span class=post-meta-item><span class=post-meta-item-icon><i class="far fa-comment"></i> </span><span class=post-meta-item-text>Disqus：</span> <a href=/2023/07/29/java-%E4%B8%AD%E5%8F%91%E8%B5%B7-http-%E8%AF%B7%E6%B1%82%E6%97%B6%E8%AF%81%E4%B9%A6%E9%97%AE%E9%A2%98%E8%A7%A3%E5%86%B3%E8%AE%B0%E5%BD%95/#disqus_thread itemprop=discussionUrl title=disqus><span class="post-comments-count disqus-comment-count" data-disqus-identifier=2023/07/29/java-中发起-http-请求时证书问题解决记录/ itemprop=commentCount></span></a></span></div></div></header><div class=post-body itemprop=articleBody><p>再一次环境部署是发现了个问题，就是在请求微信 https 请求的时候，出现了个错误<br><code>No appropriate protocol (protocol is disabled or cipher suites are inappropriate)</code><br>一开始以为是环境问题，从 oracle 的 jdk 换成了基于 openjdk 的底包，没有 javax 的关系，<br>完整的提示包含了 javax 的异常<br><code>java.lang.RuntimeException: javax.net.ssl.SSLHandshakeException: No appropriate protocol (protocol is disabled or cipher suites are inappropriate)</code><br>后面再看了下，是不是也可能是证书的问题，然后就去找了下是不是证书相关的，<br>可以看到在 <code>/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/security</code> 路径下的 <code>java.security</code> 中<br><code>jdk.tls.disabledAlgorithms=SSLv3, TLSv1, TLSv1.1, RC4, DES, MD5withRSA,</code><br>而正好在我们代码里 <code>createSocketFactory</code> 的时候使用了 TLSv1 这个证书协议<pre class="line-numbers language-java" data-language=java><code class=language-java><span class="token class-name">SSLContext</span> sslContext <span class="token operator">=</span> <span class="token class-name">SSLContext</span><span class="token punctuation">.</span><span class="token function">getInstance</span><span class="token punctuation">(</span><span class="token string">"TLS"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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sslContext<span class="token punctuation">.</span><span class="token function">init</span><span class="token punctuation">(</span>kmf<span class="token punctuation">.</span><span class="token function">getKeyManagers</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">,</span> <span class="token keyword">null</span><span class="token punctuation">,</span> <span class="token keyword">new</span> <span class="token class-name">SecureRandom</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">return</span> <span class="token keyword">new</span> <span class="token class-name">SSLConnectionSocketFactory</span><span class="token punctuation">(</span>sslContext<span class="token punctuation">,</span> <span class="token keyword">new</span> <span class="token class-name">String</span><span class="token punctuation">[</span><span class="token punctuation">]</span><span class="token punctuation">{</span><span class="token string">"TLSv1"</span><span class="token punctuation">}</span><span class="token punctuation">,</span> <span class="token keyword">null</span><span class="token punctuation">,</span> <span class="token keyword">new</span> <span class="token class-name">DefaultHostnameVerifier</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span><span aria-hidden=true class=line-numbers-rows><span></span><span></span><span></span></span></code></pre><p>所以就有两种方案，一个是使用更新版本的 TLS 或者另一个就是使用比较久的 jdk，这也说明其实即使都是 jdk8 的，不同的小版本差异还是会有些影响，有的时候对于这些错误还是需要更深入地学习，不能一概而之认为就是 jdk 用的是 oracle 还是 openjdk 的，不同的错误可能就需要仔细确认原因所在。</div><footer class=post-footer><div class=post-eof></div></footer></article></div><div class=post-block><article class=post-content itemscope itemtype=http://schema.org/Article><link href=https://nicksxs.me/2023/07/23/%E3%80%8A%E5%AF%BB%E7%BE%8A%E5%8E%86%E9%99%A9%E8%AE%B0%E3%80%8B%E8%AF%BB%E5%90%8E%E6%84%9F/ itemprop=mainEntityOfPage><span hidden itemprop=author itemscope itemtype=http://schema.org/Person><meta content=/uploads/avatar.jpg itemprop=image><meta content=Nicksxs itemprop=name></span><span hidden itemprop=publisher itemscope itemtype=http://schema.org/Organization><meta content="Nicksxs's Blog" itemprop=name><meta content="learn from zero,技术博客，Nicksxs，史学森" itemprop=description></span><span hidden itemprop=post itemscope itemtype=http://schema.org/CreativeWork><meta content="undefined | Nicksxs's Blog" itemprop=name><meta itemprop=description></span><header class=post-header><h2 itemprop="name headline" class=post-title><a class=post-title-link href=/2023/07/23/%E3%80%8A%E5%AF%BB%E7%BE%8A%E5%8E%86%E9%99%A9%E8%AE%B0%E3%80%8B%E8%AF%BB%E5%90%8E%E6%84%9F/ itemprop=url>《寻羊历险记》读后感</a></h2><div class=post-meta-container><div class=post-meta><span class=post-meta-item><span class=post-meta-item-icon><i class="far fa-calendar"></i> </span><span class=post-meta-item-text>发表于</span> <time itemprop="dateCreated datePublished" title="创建时间：2023-07-23 21:40:37" datetime=2023-07-23T21:40:37+08:00>2023-07-23</time> </span><span class=post-meta-item><span class=post-meta-item-icon><i class="far fa-folder"></i> </span><span class=post-meta-item-text>分类于</span> <span itemprop=about itemscope itemtype=http://schema.org/Thing><a href=/categories/%E8%AF%BB%E5%90%8E%E6%84%9F/ itemprop=url rel=index><span itemprop=name>读后感</span></a> </span>， <span itemprop=about itemscope itemtype=http://schema.org/Thing><a href=/categories/%E8%AF%BB%E5%90%8E%E6%84%9F/%E7%94%9F%E6%B4%BB/ itemprop=url rel=index><span itemprop=name>生活</span></a> </span></span><span class="post-meta-item leancloud_visitors" data-flag-title=《寻羊历险记》读后感 id=/2023/07/23/%E3%80%8A%E5%AF%BB%E7%BE%8A%E5%8E%86%E9%99%A9%E8%AE%B0%E3%80%8B%E8%AF%BB%E5%90%8E%E6%84%9F/ title=阅读次数><span class=post-meta-item-icon><i class="far fa-eye"></i> </span><span class=post-meta-item-text>阅读次数：</span> <span class=leancloud-visitors-count></span> </span><span class=post-meta-item><span class=post-meta-item-icon><i class="far fa-comment"></i> </span><span class=post-meta-item-text>Disqus：</span> <a href=/2023/07/23/%E3%80%8A%E5%AF%BB%E7%BE%8A%E5%8E%86%E9%99%A9%E8%AE%B0%E3%80%8B%E8%AF%BB%E5%90%8E%E6%84%9F/#disqus_thread itemprop=discussionUrl title=disqus><span class="post-comments-count disqus-comment-count" data-disqus-identifier=2023/07/23/《寻羊历险记》读后感/ itemprop=commentCount></span></a></span></div></div></header><div class=post-body itemprop=articleBody><p>最近本来是在读《舞舞舞》，然后看到有介绍说，这个跟《寻羊历险记》是有情节上的关联，所以就先去看了《寻羊历险记》，《寻羊历险记》也是村上春树的第一本成规模的长篇小说，也可以认为是《舞舞舞》的前篇。<br>最开始这个情节跟之前的刺杀骑士团长还是哪本有点类似，都有跟老婆离婚了，主角应该是个跟朋友一起开翻译社的，后面也开始做广告相关的，做到了经济收益还不错的阶段，也有一些挺哲学的对话，朋友觉得这么赚钱不地道（可能也是觉得这样忘了初心），在离婚以后又结交了一个耳朵很好看的女友，这个女友也是个比较抽象的存在，描述中给人感觉是一个外貌很普通的女孩，但是耳朵漂亮的惊为天人，不知道是不是有什么隐喻，感觉现实中没见过这样的人，女友平时把耳朵遮起来不轻易露出来，只有在跟主角做爱的时候才露出来<br>主体剧情是因为男主在广告中用了一张一位叫“鼠”的朋友寄给他的一张包含一只特殊的羊的照片，就有个政界大佬的秘书找过来，逼迫主角要找到照片上的羊，这只羊背上有星纹，基本不可能属于在日本当时可能存在的羊的品种，因为这位政界大佬快病危了，所以要求主角必须在一个月内找到这只羊，因为这里把这只神秘的羊塑造成神一样的存在，这位政界大佬在年轻时被这只羊上身，后面就开始在政治事业上大展宏图，就基本成了能左右整个日本走向的巨佬，但近期随着巨佬，身体状态慢慢变差，这只羊就从他身上消失了，所以秘书要主角必须找到这只羊，不然基本会让主角的翻译社完蛋，这样主角就会面临破产赔偿等严重后果，只是说主角本来也一直是这种丧气存在，再说这么茫茫人海找个人都难，还要找这么一只玄乎的不太可能真实存在的羊，所以基本是想要放弃的，结果刚才说的耳朵很漂亮的女友却有着神乎其神的直觉，就觉得能找到，然后他们就踏上了巡羊的旅程，一开始到了札幌，寻找一无所获，然后神奇的是女友推荐一定要住的海豚宾馆，恰恰是一切线索的源头，宾馆老板的父亲正好是羊博士，在年轻的时候被羊上身过，后面离开后就去了那位巨佬身上，让巨佬成了真正控制日本的地下帝国的王，跟羊博士咨询后知道羊可能在十二瀑镇的牧场出现过，所以一路找寻，发现其实这个牧场中有个别墅正好是主角朋友“鼠”的，到了别墅后出现了个神秘的羊男，这个羊男真的不太明白是怎么个存在，就是让主角的女友回去了，然后最后一个肉体承载着“鼠”的灵魂跟主角有了一次接触，主角呆在这个别墅过着百无聊赖的生活，在才到有一次羊男来跟他交流的时候其实是承载着鼠的灵魂，就觉得是不是一切都是在忽悠他，离一个月期限也越来越近了，而在发怒之后，“鼠”真的出现后，但是不是真的“鼠”，而是只有他的灵魂，因为“鼠”已经死了，因为不想被“羊”附身，成为羊壳，并且让主角设定好时钟后的装置后尽快下山，第二天主角离开上了火车后山上牧场就传来爆炸声，“鼠”已经跟羊同归于尽了，免得再有其他人被羊附身，主角也很难过，回到故乡在四周大海已经被填掉了的旧防波堤上大哭悼念逝去的“鼠”。<br>其实对于没什么时代概念或者对村上一直以来的观念不是特别敏感的，对这本书讲了啥有点云里雾里，后面看了一些简单的解释就是羊其实代表日本帝国主义和资本主义，可能是村上本人反帝国主义，军国主义和资本主义的一个表征，想来也有些道理，不然“鼠”的牺牲就感觉比较没意义，但是另一方面我的理解也可能是对自由的向往的表达，被羊控制，虽然可以成就“伟大”的事业，但是也丧失了自我。</div><footer 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