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135 lines
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146 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>10</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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class=tag-list-count>3</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E7%94%9F%E6%B4%BB/ rel=tag>生活</a><span class=tag-list-count>42</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E7%94%B5%E7%93%B6%E8%BD%A6/ rel=tag>电瓶车</a><span class=tag-list-count>2</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E7%96%AB%E6%83%85/ rel=tag>疫情</a><span class=tag-list-count>2</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E7%9C%8B%E4%B9%A6/ rel=tag>看书</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E7%9C%8B%E5%89%A7/ rel=tag>看剧</a><span class=tag-list-count>3</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E7%9F%A9%E9%98%B5/ rel=tag>矩阵</a><span class=tag-list-count>1</span><li class=tag-list-item><a class=tag-list-link href=/tags/%E7%AB%AF%E5%8F%A3%E8%BD%AC%E5%8F%91/ rel=tag>端口转发</a><span class=tag-list-count>3</span><li class=tag-list-item><a class=tag-list-link 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title=https://covermusic.cn>69伙伴</a></ul></div></div></aside></div><div class="main-inner index posts-expand"><div class=post-block><article class=post-content itemscope itemtype=http://schema.org/Article><link href=https://nicksxs.me/2022/08/21/%E4%B8%80%E4%B8%AA-nginx-%E7%9A%84%E7%AE%80%E5%8D%95%E8%AE%B0%E5%BF%86%E7%82%B9/ 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=/2022/08/21/%E4%B8%80%E4%B8%AA-nginx-%E7%9A%84%E7%AE%80%E5%8D%95%E8%AE%B0%E5%BF%86%E7%82%B9/ itemprop=url>一个 nginx 的简单记忆点</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：2022-08-21 20:46:13" datetime=2022-08-21T20:46:13+08:00>2022-08-21</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：2022-08-22 17:44:19" datetime=2022-08-22T17:44:19+08:00 itemprop=dateModified>2022-08-22</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/nginx/ itemprop=url rel=index><span itemprop=name>nginx</span></a> </span></span><span class="post-meta-item leancloud_visitors" data-flag-title="一个 nginx 的简单记忆点" id=/2022/08/21/%E4%B8%80%E4%B8%AA-nginx-%E7%9A%84%E7%AE%80%E5%8D%95%E8%AE%B0%E5%BF%86%E7%82%B9/ 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=/2022/08/21/%E4%B8%80%E4%B8%AA-nginx-%E7%9A%84%E7%AE%80%E5%8D%95%E8%AE%B0%E5%BF%86%E7%82%B9/#disqus_thread itemprop=discussionUrl title=disqus><span class="post-comments-count disqus-comment-count" data-disqus-identifier=2022/08/21/一个-nginx-的简单记忆点/ itemprop=commentCount></span></a></span></div></div></header><div class=post-body itemprop=articleBody><p>上周在处理一个 nginx 配置的时候，发现了一个之前不理解的小点，说一个场景，就是我们一般的处理方式就是一个 ip 端口只能配置一个域名的服务，比如 <a href=https://nicksxs.me/>https://nicksxs.me</a> 对应配置到 127.0.0.1:443，如果我想要把 <a href=https://nicksxs.com/ rel=noopener target=_blank>https://nicksxs.com</a> 也解析到这个服务器，并转发到不同的下游，这里就需要借助所谓的 SNI 的功能<h3 id=Server-Name-Indication><a title="Server Name Indication" class=headerlink href=#Server-Name-Indication></a>Server Name Indication</h3><p>A more generic solution for running several HTTPS servers on a single IP address is TLS Server Name Indication extension (SNI, RFC 6066), which allows a browser to pass a requested server name during the SSL handshake and, therefore, the server will know which certificate it should use for the connection. SNI is currently supported by most modern browsers, though may not be used by some old or special clients.<br><a href=http://nginx.org/en/docs/http/configuring_https_servers.html#sni rel=noopener target=_blank>来源</a><br>机翻一下：在单个 IP 地址上运行多个 HTTPS 服务器的更通用的解决方案是 TLS 服务器名称指示扩展（SNI，RFC 6066），它允许浏览器在 SSL 握手期间传递请求的服务器名称，因此，服务器将知道哪个 它应该用于连接的证书。 目前大多数现代浏览器都支持 SNI，但某些旧的或特殊的客户端可能不使用 SNI。<p>首先我们需要确认 sni 已被支持<br><img data-src=https://img.nicksxs.com/uPic/VQTZu8.png><br>在实际的配置中就可以这样<pre class="line-numbers language-nginx" data-language=nginx><code class=language-nginx><span class="token directive"><span class="token keyword">stream</span></span> <span class="token punctuation">{</span>
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<span class="token directive"><span class="token keyword">map</span> <span class="token variable">$ssl_preread_server_name</span> <span class="token variable">$stream_map</span></span> <span class="token punctuation">{</span>
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<span class="token directive"><span class="token keyword">nicksxs.me</span> nme</span><span class="token punctuation">;</span>
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<span class="token directive"><span class="token keyword">nicksxs.com</span> ncom</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span>
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<span class="token directive"><span class="token keyword">upstream</span> nme</span> <span class="token punctuation">{</span>
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<span class="token directive"><span class="token keyword">server</span> 127.0.0.1:8000</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span>
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<span class="token directive"><span class="token keyword">upstream</span> ncom</span> <span class="token punctuation">{</span>
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<span class="token directive"><span class="token keyword">server</span> 127.0.0.1:8001</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span>
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<span class="token directive"><span class="token keyword">server</span></span> <span class="token punctuation">{</span>
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<span class="token directive"><span class="token keyword">listen</span> <span class="token number">443</span> reuseport</span><span class="token punctuation">;</span>
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<span class="token directive"><span class="token keyword">proxy_pass</span> <span class="token variable">$stream_map</span></span><span class="token punctuation">;</span>
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<span class="token directive"><span class="token keyword">ssl_preread</span> <span class="token boolean">on</span></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></code></pre><p>类似这样，但是这个理解是非常肤浅和不完善的，只是简单记忆下，后续再进行补充完整<p>还有一点就是我们在配置的时候经常配置就是 server_name，但是会看到直接在使用 ssl_server_name，<br>其实在listen 标识了 ssl, 对应的 ssl_server_name 就等于 server_name，不需要额外处理了。</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/2022/08/14/Leetcode-278-%E7%AC%AC%E4%B8%80%E4%B8%AA%E9%94%99%E8%AF%AF%E7%9A%84%E7%89%88%E6%9C%AC-First-Bad-Version-Easy-%E9%A2%98%E8%A7%A3%E5%88%86%E6%9E%90/ 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=/2022/08/14/Leetcode-278-%E7%AC%AC%E4%B8%80%E4%B8%AA%E9%94%99%E8%AF%AF%E7%9A%84%E7%89%88%E6%9C%AC-First-Bad-Version-Easy-%E9%A2%98%E8%A7%A3%E5%88%86%E6%9E%90/ itemprop=url>Leetcode 278 第一个错误的版本 ( First Bad Version *Easy* ) 题解分析</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：2022-08-14 19:45:35" datetime=2022-08-14T19:45:35+08:00>2022-08-14</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/leetcode/ itemprop=url rel=index><span itemprop=name>leetcode</span></a> </span></span><span class="post-meta-item leancloud_visitors" data-flag-title="Leetcode 278 第一个错误的版本 ( First Bad Version *Easy* ) 题解分析" id=/2022/08/14/Leetcode-278-%E7%AC%AC%E4%B8%80%E4%B8%AA%E9%94%99%E8%AF%AF%E7%9A%84%E7%89%88%E6%9C%AC-First-Bad-Version-Easy-%E9%A2%98%E8%A7%A3%E5%88%86%E6%9E%90/ 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=/2022/08/14/Leetcode-278-%E7%AC%AC%E4%B8%80%E4%B8%AA%E9%94%99%E8%AF%AF%E7%9A%84%E7%89%88%E6%9C%AC-First-Bad-Version-Easy-%E9%A2%98%E8%A7%A3%E5%88%86%E6%9E%90/#disqus_thread itemprop=discussionUrl title=disqus><span class="post-comments-count disqus-comment-count" data-disqus-identifier=2022/08/14/Leetcode-278-第一个错误的版本-First-Bad-Version-Easy-题解分析/ itemprop=commentCount></span></a></span></div></div></header><div class=post-body itemprop=articleBody><h3 id=题目介绍><a class=headerlink href=#题目介绍 title=题目介绍></a>题目介绍</h3><p>You are a product manager and currently leading a team to develop a new product. Unfortunately, the latest version of your product fails the quality check. Since each version is developed based on the previous version, all the versions after a bad version are also bad.<p>Suppose you have <code>n</code> versions <code>[1, 2, ..., n]</code> and you want to find out the first bad one, which causes all the following ones to be bad.<p>You are given an API <code>bool isBadVersion(version)</code> which returns whether <code>version</code> is bad. Implement a function to find the first bad version. You should minimize the number of calls to the API.<h3 id=示例><a class=headerlink href=#示例 title=示例></a>示例</h3><h4 id=Example-1><a title="Example 1:" class=headerlink href=#Example-1></a>Example 1:</h4><blockquote><p><strong>Input:</strong> n = 5, bad = 4<br><strong>Output:</strong> 4<br><strong>Explanation:</strong><br>call isBadVersion(3) -> false<br>call isBadVersion(5) -> true<br>call isBadVersion(4) -> true<br>Then 4 is the first bad version.</blockquote><h4 id=Example-2><a title="Example 2:" class=headerlink href=#Example-2></a>Example 2:</h4><blockquote><p><strong>Input:</strong> n = 1, bad = 1<br><strong>Output:</strong> 1</blockquote><h3 id=简析><a class=headerlink href=#简析 title=简析></a>简析</h3><p>简单来说就是一个二分查找，但是这个问题其实处理起来还是需要搞清楚一些边界问题<h3 id=代码><a class=headerlink href=#代码 title=代码></a>代码</h3><pre class="line-numbers language-java" data-language=java><code class=language-java><span class="token keyword">public</span> <span class="token keyword">int</span> <span class="token function">firstBadVersion</span><span class="token punctuation">(</span><span class="token keyword">int</span> n<span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token comment">// 类似于双指针法</span>
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<span class="token keyword">int</span> left <span class="token operator">=</span> <span class="token number">1</span><span class="token punctuation">,</span> right <span class="token operator">=</span> n<span class="token punctuation">,</span> mid<span class="token punctuation">;</span>
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<span class="token keyword">while</span> <span class="token punctuation">(</span>left <span class="token operator"><</span> right<span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token comment">// 取中点</span>
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mid <span class="token operator">=</span> left <span class="token operator">+</span> <span class="token punctuation">(</span>right <span class="token operator">-</span> left<span class="token punctuation">)</span> <span class="token operator">/</span> <span class="token number">2</span><span class="token punctuation">;</span>
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<span class="token comment">// 如果不是错误版本，就往右找</span>
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<span class="token keyword">if</span> <span class="token punctuation">(</span><span class="token operator">!</span><span class="token function">isBadVersion</span><span class="token punctuation">(</span>mid<span class="token punctuation">)</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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left <span class="token operator">=</span> mid <span class="token operator">+</span> <span class="token number">1</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 comment">// 如果是的话就往左查找</span>
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right <span class="token operator">=</span> mid<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 comment">// 这里考虑交界情况是，在上面循环中如果 left 是好的，right 是坏的，那进入循环的时候 mid == left</span>
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<span class="token comment">// 然后 left = mid + 1 就会等于 right，循环条件就跳出了，此时 left 就是那个起始的错误点了</span>
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<span class="token comment">// 其实这两个是同一个值</span>
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<span class="token keyword">return</span> left<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></code></pre><p>往右移动示例<br><img data-src=https://img.nicksxs.com/uPic/eWVkKN.png><br>往左移动示例<br><img data-src=https://img.nicksxs.com/uPic/M5i8vr.png><h3 id=结果><a class=headerlink href=#结果 title=结果></a>结果</h3><p><img data-src=https://img.nicksxs.com/uPic/sXdyJz.png></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/2022/08/06/Leetcode-16-%E6%9C%80%E6%8E%A5%E8%BF%91%E7%9A%84%E4%B8%89%E6%95%B0%E4%B9%8B%E5%92%8C-3Sum-Closest-Medium-%E9%A2%98%E8%A7%A3%E5%88%86%E6%9E%90/ 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=/2022/08/06/Leetcode-16-%E6%9C%80%E6%8E%A5%E8%BF%91%E7%9A%84%E4%B8%89%E6%95%B0%E4%B9%8B%E5%92%8C-3Sum-Closest-Medium-%E9%A2%98%E8%A7%A3%E5%88%86%E6%9E%90/ itemprop=url>Leetcode 16 最接近的三数之和 ( 3Sum Closest *Medium* ) 题解分析</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：2022-08-06 22:33:25" datetime=2022-08-06T22:33:25+08:00>2022-08-06</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/leetcode/ itemprop=url rel=index><span itemprop=name>leetcode</span></a> </span></span><span class="post-meta-item leancloud_visitors" data-flag-title="Leetcode 16 最接近的三数之和 ( 3Sum Closest *Medium* ) 题解分析" id=/2022/08/06/Leetcode-16-%E6%9C%80%E6%8E%A5%E8%BF%91%E7%9A%84%E4%B8%89%E6%95%B0%E4%B9%8B%E5%92%8C-3Sum-Closest-Medium-%E9%A2%98%E8%A7%A3%E5%88%86%E6%9E%90/ 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=/2022/08/06/Leetcode-16-%E6%9C%80%E6%8E%A5%E8%BF%91%E7%9A%84%E4%B8%89%E6%95%B0%E4%B9%8B%E5%92%8C-3Sum-Closest-Medium-%E9%A2%98%E8%A7%A3%E5%88%86%E6%9E%90/#disqus_thread itemprop=discussionUrl title=disqus><span class="post-comments-count disqus-comment-count" data-disqus-identifier=2022/08/06/Leetcode-16-最接近的三数之和-3Sum-Closest-Medium-题解分析/ itemprop=commentCount></span></a></span></div></div></header><div class=post-body itemprop=articleBody><h3 id=题目介绍><a class=headerlink href=#题目介绍 title=题目介绍></a>题目介绍</h3><p>Given an integer array <code>nums</code> of length <code>n</code> and an integer <code>target</code>, find three integers in <code>nums</code> such that the sum is closest to <code>target</code>.<p>Return the sum of the three integers.<p>You may assume that each input would have exactly one solution.<p>简单解释下就是之前是要三数之和等于目标值，现在是找到最接近的三数之和。<h3 id=示例><a class=headerlink href=#示例 title=示例></a>示例</h3><h4 id=Example-1><a title="Example 1:" class=headerlink href=#Example-1></a>Example 1:</h4><blockquote><p><strong>Input:</strong> nums = [-1,2,1,-4], target = 1<br><strong>Output:</strong> 2<br><strong>Explanation:</strong> The sum that is closest to the target is 2. (-1 + 2 + 1 = 2).</blockquote><h4 id=Example-2><a title="Example 2:" class=headerlink href=#Example-2></a>Example 2:</h4><blockquote><p><strong>Input:</strong> nums = [0,0,0], target = 1<br><strong>Output:</strong> 0</blockquote><h4 id=Constraints><a class=headerlink href=#Constraints title=Constraints:></a>Constraints:</h4><ul><li><code>3 <= nums.length <= 1000</code><li><code>-1000 <= nums[i] <= 1000</code><li><code>-10^4 <= target <= 10^4</code></ul><h3 id=简单解析><a class=headerlink href=#简单解析 title=简单解析></a>简单解析</h3><p>这个题思路上来讲不难，也是用原来三数之和的方式去做，利用”双指针法”或者其它描述法，但是需要简化逻辑<h3 id=code><a class=headerlink href=#code title=code></a>code</h3><pre class="line-numbers language-java" data-language=java><code class=language-java><span class="token keyword">public</span> <span class="token keyword">int</span> <span class="token function">threeSumClosest</span><span class="token punctuation">(</span><span class="token keyword">int</span><span class="token punctuation">[</span><span class="token punctuation">]</span> nums<span class="token punctuation">,</span> <span class="token keyword">int</span> target<span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token class-name">Arrays</span><span class="token punctuation">.</span><span class="token function">sort</span><span class="token punctuation">(</span>nums<span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token comment">// 当前最近的和</span>
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<span class="token keyword">int</span> closestSum <span class="token operator">=</span> nums<span class="token punctuation">[</span><span class="token number">0</span><span class="token punctuation">]</span> <span class="token operator">+</span> nums<span class="token punctuation">[</span><span class="token number">1</span><span class="token punctuation">]</span> <span class="token operator">+</span> nums<span class="token punctuation">[</span>nums<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">for</span> <span class="token punctuation">(</span><span class="token keyword">int</span> i <span class="token operator">=</span> <span class="token number">0</span><span class="token punctuation">;</span> i <span class="token operator"><</span> nums<span class="token punctuation">.</span>length <span class="token operator">-</span> <span class="token number">2</span><span class="token punctuation">;</span> i<span class="token operator">++</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
|
|
<span class="token keyword">if</span> <span class="token punctuation">(</span>i <span class="token operator">==</span> <span class="token number">0</span> <span class="token operator">||</span> nums<span class="token punctuation">[</span>i<span class="token punctuation">]</span> <span class="token operator">!=</span> nums<span class="token punctuation">[</span>i <span class="token operator">-</span> <span class="token number">1</span><span class="token punctuation">]</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
|
|
<span class="token comment">// 左指针</span>
|
|
<span class="token keyword">int</span> left <span class="token operator">=</span> i <span class="token operator">+</span> <span class="token number">1</span><span class="token punctuation">;</span>
|
|
<span class="token comment">// 右指针</span>
|
|
<span class="token keyword">int</span> right <span class="token operator">=</span> nums<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 comment">// 判断是否遍历完了</span>
|
|
<span class="token keyword">while</span> <span class="token punctuation">(</span>left <span class="token operator"><</span> right<span class="token punctuation">)</span> <span class="token punctuation">{</span>
|
|
<span class="token comment">// 当前的和</span>
|
|
<span class="token keyword">int</span> sum <span class="token operator">=</span> nums<span class="token punctuation">[</span>i<span class="token punctuation">]</span> <span class="token operator">+</span> nums<span class="token punctuation">[</span>left<span class="token punctuation">]</span> <span class="token operator">+</span> nums<span class="token punctuation">[</span>right<span class="token punctuation">]</span><span class="token punctuation">;</span>
|
|
<span class="token comment">// 小优化，相等就略过了</span>
|
|
<span class="token keyword">while</span> <span class="token punctuation">(</span>left <span class="token operator"><</span> right <span class="token operator">&&</span> nums<span class="token punctuation">[</span>left<span class="token punctuation">]</span> <span class="token operator">==</span> nums<span class="token punctuation">[</span>left <span class="token operator">+</span> <span class="token number">1</span><span class="token punctuation">]</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
|
|
left<span class="token operator">++</span><span class="token punctuation">;</span>
|
|
<span class="token punctuation">}</span>
|
|
<span class="token keyword">while</span> <span class="token punctuation">(</span>left <span class="token operator"><</span> right <span class="token operator">&&</span> nums<span class="token punctuation">[</span>right<span class="token punctuation">]</span> <span class="token operator">==</span> nums<span class="token punctuation">[</span>right <span class="token operator">-</span> <span class="token number">1</span><span class="token punctuation">]</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
|
|
right<span class="token operator">--</span><span class="token punctuation">;</span>
|
|
<span class="token punctuation">}</span>
|
|
<span class="token comment">// 这里判断，其实也还是希望趋近目标值</span>
|
|
<span class="token keyword">if</span> <span class="token punctuation">(</span>sum <span class="token operator"><</span> target<span class="token punctuation">)</span> <span class="token punctuation">{</span>
|
|
left<span class="token operator">++</span><span class="token punctuation">;</span>
|
|
<span class="token punctuation">}</span> <span class="token keyword">else</span> <span class="token punctuation">{</span>
|
|
right<span class="token operator">--</span><span class="token punctuation">;</span>
|
|
<span class="token punctuation">}</span>
|
|
<span class="token comment">// 判断是否需要替换</span>
|
|
<span class="token keyword">if</span> <span class="token punctuation">(</span><span class="token class-name">Math</span><span class="token punctuation">.</span><span class="token function">abs</span><span class="token punctuation">(</span>sum <span class="token operator">-</span> target<span class="token punctuation">)</span> <span class="token operator"><</span> <span class="token class-name">Math</span><span class="token punctuation">.</span><span class="token function">abs</span><span class="token punctuation">(</span>closestSum <span class="token operator">-</span> target<span class="token punctuation">)</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
|
|
closestSum <span class="token operator">=</span> sum<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>
|
|
<span class="token keyword">return</span> closestSum<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></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></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><h3 id=结果><a class=headerlink href=#结果 title=结果></a>结果</h3><p><img data-src=https://img.nicksxs.com/uPic/3TE3R7.png></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/2022/07/31/%E8%81%8A%E4%B8%80%E4%B8%8B-SpringBoot-%E8%AE%BE%E7%BD%AE%E9%9D%9E-web-%E5%BA%94%E7%94%A8%E7%9A%84%E6%96%B9%E6%B3%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=/2022/07/31/%E8%81%8A%E4%B8%80%E4%B8%8B-SpringBoot-%E8%AE%BE%E7%BD%AE%E9%9D%9E-web-%E5%BA%94%E7%94%A8%E7%9A%84%E6%96%B9%E6%B3%95/ itemprop=url>聊一下 SpringBoot 设置非 web 应用的方法</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：2022-07-31 19:16:33" datetime=2022-07-31T19:16:33+08:00>2022-07-31</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：2022-08-22 17:27:44" datetime=2022-08-22T17:27:44+08:00 itemprop=dateModified>2022-08-22</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="聊一下 SpringBoot 设置非 web 应用的方法" id=/2022/07/31/%E8%81%8A%E4%B8%80%E4%B8%8B-SpringBoot-%E8%AE%BE%E7%BD%AE%E9%9D%9E-web-%E5%BA%94%E7%94%A8%E7%9A%84%E6%96%B9%E6%B3%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=/2022/07/31/%E8%81%8A%E4%B8%80%E4%B8%8B-SpringBoot-%E8%AE%BE%E7%BD%AE%E9%9D%9E-web-%E5%BA%94%E7%94%A8%E7%9A%84%E6%96%B9%E6%B3%95/#disqus_thread itemprop=discussionUrl title=disqus><span class="post-comments-count disqus-comment-count" data-disqus-identifier=2022/07/31/聊一下-SpringBoot-设置非-web-应用的方法/ itemprop=commentCount></span></a></span></div></div></header><div class=post-body itemprop=articleBody><h3 id=寻找原因><a class=headerlink href=#寻找原因 title=寻找原因></a>寻找原因</h3><p>这次碰到一个比较奇怪的问题，应该统一发布脚本统一给应用启动参数传了个 <code>-Dserver.port=xxxx</code>，其实这个端口会作为 dubbo 的服务端口，并且应用也不提供 web 服务，但是在启动的时候会报<code>embedded servlet container failed to start. port xxxx was already in use</code>就觉得有点奇怪，仔细看了启动参数猜测可能是这个问题，有可能是依赖的二方三方包带了 spring-web 的包，然后基于 springboot 的 auto configuration 会把这个自己加载，就在本地复现了下这个问题，结果的确是这个问题。<h3 id=解决方案><a class=headerlink href=#解决方案 title=解决方案></a>解决方案</h3><h4 id=老版本-设置-spring-不带-web-功能><a title="老版本 设置 spring 不带 web 功能" class=headerlink href=#老版本-设置-spring-不带-web-功能></a>老版本 设置 spring 不带 web 功能</h4><p>比较老的 springboot 版本，可以使用<pre class="line-numbers language-java" data-language=java><code class=language-java><span class="token class-name">SpringApplication</span> app <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">SpringApplication</span><span class="token punctuation">(</span><span class="token class-name">XXXXXApplication</span><span class="token punctuation">.</span><span class="token keyword">class</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
|
|
app<span class="token punctuation">.</span><span class="token function">setWebEnvironment</span><span class="token punctuation">(</span><span class="token boolean">false</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
|
|
app<span class="token punctuation">.</span><span class="token function">run</span><span class="token punctuation">(</span>args<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><h4 id=新版本><a class=headerlink href=#新版本 title=新版本></a>新版本</h4><p>新版本的 springboot (>= 2.0.0)可以在 properties 里配置<pre class="line-numbers language-java" data-language=java><code class=language-java>spring<span class="token punctuation">.</span>main<span class="token punctuation">.</span>web<span class="token operator">-</span>application<span class="token operator">-</span>type<span class="token operator">=</span>none<span aria-hidden=true class=line-numbers-rows><span></span></span></code></pre><p>或者<pre class="line-numbers language-java" data-language=java><code class=language-java><span class="token class-name">SpringApplication</span> app <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">SpringApplication</span><span class="token punctuation">(</span><span class="token class-name">XXXXXApplication</span><span class="token punctuation">.</span><span class="token keyword">class</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
|
|
app<span class="token punctuation">.</span><span class="token function">setWebApplicationType</span><span class="token punctuation">(</span><span class="token class-name">WebApplicationType</span><span class="token punctuation">.</span><span class="token constant">NONE</span><span class="token punctuation">)</span><span class="token punctuation">;</span><span aria-hidden=true class=line-numbers-rows><span></span><span></span></span></code></pre><p>这个枚举里还有其他两种配置<pre class="line-numbers language-java" data-language=java><code class=language-java><span class="token keyword">public</span> <span class="token keyword">enum</span> <span class="token class-name">WebApplicationType</span> <span class="token punctuation">{</span>
|
|
|
|
<span class="token comment">/**
|
|
* The application should not run as a web application and should not start an
|
|
* embedded web server.
|
|
*/</span>
|
|
<span class="token constant">NONE</span><span class="token punctuation">,</span>
|
|
|
|
<span class="token comment">/**
|
|
* The application should run as a servlet-based web application and should start an
|
|
* embedded servlet web server.
|
|
*/</span>
|
|
<span class="token constant">SERVLET</span><span class="token punctuation">,</span>
|
|
|
|
<span class="token comment">/**
|
|
* The application should run as a reactive web application and should start an
|
|
* embedded reactive web server.
|
|
*/</span>
|
|
<span class="token constant">REACTIVE</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></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></code></pre><p>相当于是把none 的类型和包括 servlet 和 reactive 放进了枚举类进行控制。</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/2022/07/22/Leetcode-1260-%E4%BA%8C%E7%BB%B4%E7%BD%91%E6%A0%BC%E8%BF%81%E7%A7%BB-Shift-2D-Grid-Easy-%E9%A2%98%E8%A7%A3%E5%88%86%E6%9E%90/ 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=/2022/07/22/Leetcode-1260-%E4%BA%8C%E7%BB%B4%E7%BD%91%E6%A0%BC%E8%BF%81%E7%A7%BB-Shift-2D-Grid-Easy-%E9%A2%98%E8%A7%A3%E5%88%86%E6%9E%90/ itemprop=url>Leetcode 1260 二维网格迁移 ( Shift 2D Grid *Easy* ) 题解分析</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：2022-07-22 22:16:21" datetime=2022-07-22T22:16:21+08:00>2022-07-22</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：2022-08-06 22:32:37" datetime=2022-08-06T22:32:37+08:00 itemprop=dateModified>2022-08-06</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/leetcode/ itemprop=url rel=index><span itemprop=name>leetcode</span></a> </span></span><span class="post-meta-item leancloud_visitors" data-flag-title="Leetcode 1260 二维网格迁移 ( Shift 2D Grid *Easy* ) 题解分析" id=/2022/07/22/Leetcode-1260-%E4%BA%8C%E7%BB%B4%E7%BD%91%E6%A0%BC%E8%BF%81%E7%A7%BB-Shift-2D-Grid-Easy-%E9%A2%98%E8%A7%A3%E5%88%86%E6%9E%90/ 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=/2022/07/22/Leetcode-1260-%E4%BA%8C%E7%BB%B4%E7%BD%91%E6%A0%BC%E8%BF%81%E7%A7%BB-Shift-2D-Grid-Easy-%E9%A2%98%E8%A7%A3%E5%88%86%E6%9E%90/#disqus_thread itemprop=discussionUrl title=disqus><span class="post-comments-count disqus-comment-count" data-disqus-identifier=2022/07/22/Leetcode-1260-二维网格迁移-Shift-2D-Grid-Easy-题解分析/ itemprop=commentCount></span></a></span></div></div></header><div class=post-body itemprop=articleBody><h3 id=题目介绍><a class=headerlink href=#题目介绍 title=题目介绍></a>题目介绍</h3><p>Given a 2D <code>grid</code> of size <code>m x n</code> and an integer <code>k</code>. You need to shift the <code>grid k</code> times.<p>In one shift operation:<p>Element at <code>grid[i][j]</code> moves to <code>grid[i][j + 1]</code>.<br>Element at <code>grid[i][n - 1]</code> moves to <code>grid[i + 1][0]</code>.<br>Element at <code>grid[m - 1][n - 1]</code> moves to <code>grid[0][0]</code>.<br>Return the <em>2D grid</em> after applying shift operation <code>k</code> times.<h3 id=示例><a class=headerlink href=#示例 title=示例></a>示例</h3><h4 id=Example-1><a title="Example 1:" class=headerlink href=#Example-1></a>Example 1:</h4><p><img data-src=https://img.nicksxs.com/uPic/A6DykH.jpg><blockquote><p><strong>Input</strong>: grid = [[1,2,3],[4,5,6],[7,8,9]], k = 1<br><strong>Output</strong>: [[9,1,2],[3,4,5],[6,7,8]]</blockquote><h4 id=Example-2><a title="Example 2:" class=headerlink href=#Example-2></a>Example 2:</h4><p><img data-src=https://img.nicksxs.com/uPic/fcjxe9.jpg><blockquote><p><strong>Input</strong>: grid = [[3,8,1,9],[19,7,2,5],[4,6,11,10],[12,0,21,13]], k = 4<br><strong>Output</strong>: [[12,0,21,13],[3,8,1,9],[19,7,2,5],[4,6,11,10]]</blockquote><h4 id=Example-3><a title="Example 3:" class=headerlink href=#Example-3></a>Example 3:</h4><blockquote><p><strong>Input</strong>: grid = [[1,2,3],[4,5,6],[7,8,9]], k = 9<br><strong>Output</strong>: [[1,2,3],[4,5,6],[7,8,9]]</blockquote><h3 id=提示><a class=headerlink href=#提示 title=提示></a>提示</h3><ul><li><code>m == grid.length</code><li><code>n == grid[i].length</code><li><code>1 <= m <= 50</code><li><code>1 <= n <= 50</code><li><code>-1000 <= grid[i][j] <= 1000</code><li><code>0 <= k <= 100</code></ul><h3 id=解析><a class=headerlink href=#解析 title=解析></a>解析</h3><p>这个题主要是矩阵或者说数组的操作，并且题目要返回的是个 List，所以也不用原地操作，只需要找对位置就可以了，k 是多少就相当于让这个二维数组头尾衔接移动 k 个元素<h3 id=代码><a class=headerlink href=#代码 title=代码></a>代码</h3><pre class="line-numbers language-java" data-language=java><code class=language-java><span class="token keyword">public</span> <span class="token class-name">List</span><span class="token generics"><span class="token punctuation"><</span><span class="token class-name">List</span><span class="token punctuation"><</span><span class="token class-name">Integer</span><span class="token punctuation">></span><span class="token punctuation">></span></span> <span class="token function">shiftGrid</span><span class="token punctuation">(</span><span class="token keyword">int</span><span class="token punctuation">[</span><span class="token punctuation">]</span><span class="token punctuation">[</span><span class="token punctuation">]</span> grid<span class="token punctuation">,</span> <span class="token keyword">int</span> k<span class="token punctuation">)</span> <span class="token punctuation">{</span>
|
|
<span class="token comment">// 行数</span>
|
|
<span class="token keyword">int</span> m <span class="token operator">=</span> grid<span class="token punctuation">.</span>length<span class="token punctuation">;</span>
|
|
<span class="token comment">// 列数</span>
|
|
<span class="token keyword">int</span> n <span class="token operator">=</span> grid<span class="token punctuation">[</span><span class="token number">0</span><span class="token punctuation">]</span><span class="token punctuation">.</span>length<span class="token punctuation">;</span>
|
|
<span class="token comment">// 偏移值，取下模</span>
|
|
k <span class="token operator">=</span> k <span class="token operator">%</span> <span class="token punctuation">(</span>m <span class="token operator">*</span> n<span class="token punctuation">)</span><span class="token punctuation">;</span>
|
|
<span class="token comment">// 反向取下数量，因为我打算直接从头填充新的矩阵</span>
|
|
<span class="token comment">/*
|
|
* 比如
|
|
* 1 2 3
|
|
* 4 5 6
|
|
* 7 8 9
|
|
* 需要变成
|
|
* 9 1 2
|
|
* 3 4 5
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* 6 7 8
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* 就要从 9 开始填充
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*/</span>
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<span class="token keyword">int</span> reverseK <span class="token operator">=</span> m <span class="token operator">*</span> n <span class="token operator">-</span> k<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">List</span><span class="token punctuation"><</span><span class="token class-name">Integer</span><span class="token punctuation">></span><span class="token punctuation">></span></span> matrix <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">ArrayList</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 comment">// 这类就是两层循环</span>
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<span class="token keyword">for</span> <span class="token punctuation">(</span><span class="token keyword">int</span> i <span class="token operator">=</span> <span class="token number">0</span><span class="token punctuation">;</span> i <span class="token operator"><</span> m<span class="token punctuation">;</span> i<span class="token operator">++</span><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">Integer</span><span class="token punctuation">></span></span> line <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">ArrayList</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">for</span> <span class="token punctuation">(</span><span class="token keyword">int</span> j <span class="token operator">=</span> <span class="token number">0</span><span class="token punctuation">;</span> j <span class="token operator"><</span> n<span class="token punctuation">;</span> j<span class="token operator">++</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token comment">// 数量会随着循环迭代增长, 确认是第几个</span>
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<span class="token keyword">int</span> currentNum <span class="token operator">=</span> reverseK <span class="token operator">+</span> i <span class="token operator">*</span> n <span class="token operator">+</span> <span class="token punctuation">(</span>j <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 comment">// 这里处理下到达矩阵末尾后减掉 m * n</span>
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<span class="token keyword">if</span> <span class="token punctuation">(</span>currentNum <span class="token operator">></span> m <span class="token operator">*</span> n<span class="token punctuation">)</span> <span class="token punctuation">{</span>
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currentNum <span class="token operator">-=</span> m <span class="token operator">*</span> n<span class="token punctuation">;</span>
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<span class="token punctuation">}</span>
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<span class="token comment">// 根据矩阵列数 n 算出在原来矩阵的位置</span>
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<span class="token keyword">int</span> last <span class="token operator">=</span> <span class="token punctuation">(</span>currentNum <span class="token operator">-</span> <span class="token number">1</span><span class="token punctuation">)</span> <span class="token operator">%</span> n<span class="token punctuation">;</span>
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<span class="token keyword">int</span> passLine <span class="token operator">=</span> <span class="token punctuation">(</span>currentNum <span class="token operator">-</span> <span class="token number">1</span><span class="token punctuation">)</span> <span class="token operator">/</span> n<span class="token punctuation">;</span>
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line<span class="token punctuation">.</span><span class="token function">add</span><span class="token punctuation">(</span>grid<span class="token punctuation">[</span>passLine<span class="token punctuation">]</span><span class="token punctuation">[</span>last<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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matrix<span class="token punctuation">.</span><span class="token function">add</span><span class="token punctuation">(</span>line<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">return</span> matrix<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></code></pre><h3 id=结果数据><a class=headerlink href=#结果数据 title=结果数据></a>结果数据</h3><p><img data-src=https://img.nicksxs.com/uPic/3JcV8r.png><br>比较慢</div><footer class=post-footer><div class=post-eof></div></footer></article></div><nav class=pagination><a class="extend prev" aria-label=上一页 href=/page/11/ rel=prev title=上一页><i class="fa fa-angle-left"></i></a><a 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