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itemprop=post itemscope itemtype=http://schema.org/CreativeWork><meta content="学习体验下Koupleless框架-浅析代码 | Nicksxs's Blog" itemprop=name><meta content="上次简单体验了下koupleless框架,可以发现ark模块的加载运行是非常有优势的, 这次就来看下这个模块式怎么加载的 我们可以通过启动基座使用调试模式,然后打下断点在ArkClient这个类的几个核心方法 比如com.alipay.sofa.ark.api.ArkClien…" itemprop=description></span><header class=post-header><h1 itemprop="name headline" class=post-title>学习体验下Koupleless框架-浅析代码</h1><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:2026-01-25 21:27:30" datetime=2026-01-25T21:27:30+08:00>2026-01-25</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 cloudflare-page-counter" data-increment=true data-path=/2026/01/25/%E5%AD%A6%E4%B9%A0%E4%BD%93%E9%AA%8C%E4%B8%8BKoupleless%E6%A1%86%E6%9E%B6-%E6%B5%85%E6%9E%90%E4%BB%A3%E7%A0%81/ data-title=学习体验下Koupleless框架-浅析代码 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=cloudflare-page-counter-count></span></span></div><div class=post-description>上次简单体验了下koupleless框架,可以发现ark模块的加载运行是非常有优势的, 这次就来看下这个模块式怎么加载的 我们可以通过启动基座使用调试模式,然后打下断点在ArkClient这个类的几个核心方法 比如com.alipay.sofa.ark.api.ArkClien…</div></div></header><div class=post-body itemprop=articleBody><p>上次简单体验了下koupleless框架,可以发现ark模块的加载运行是非常有优势的,<br>这次就来看下这个模块式怎么加载的<br>我们可以通过启动基座使用调试模式,然后打下断点在ArkClient这个类的几个核心方法<br>比如<code>com.alipay.sofa.ark.api.ArkClient#installBiz(java.io.File)</code><br>核心方法是在这<figure class="highlight java"><table><tr><td class=gutter><pre><span class=line>1</span><br><span class=line>2</span><br><span class=line>3</span><br><span class=line>4</span><br><span class=line>5</span><br><span class=line>6</span><br><span class=line>7</span><br><span class=line>8</span><br><span class=line>9</span><br><span class=line>10</span><br><span class=line>11</span><br><span class=line>12</span><br><span class=line>13</span><br><span class=line>14</span><br><span class=line>15</span><br><span class=line>16</span><br><span class=line>17</span><br><span class=line>18</span><br><span class=line>19</span><br><span class=line>20</span><br><span class=line>21</span><br><span class=line>22</span><br><span class=line>23</span><br><span class=line>24</span><br><span class=line>25</span><br><span class=line>26</span><br><span class=line>27</span><br><span class=line>28</span><br><span class=line>29</span><br><span class=line>30</span><br><span class=line>31</span><br><span class=line>32</span><br><span class=line>33</span><br><span class=line>34</span><br><span class=line>35</span><br><span class=line>36</span><br></pre><td class=code><pre><span class=line><span class=keyword>private</span> <span class=keyword>static</span> ClientResponse <span class="title function_">doInstallBiz</span><span class=params>(File bizFile, String[] args, Map<String, String> envs)</span> <span class=keyword>throws</span> Throwable {</span><br><span class=line> AssertUtils.assertNotNull(bizFactoryService, <span class=string>"bizFactoryService must not be null!"</span>);</span><br><span class=line> AssertUtils.assertNotNull(bizManagerService, <span class=string>"bizManagerService must not be null!"</span>);</span><br><span class=line> AssertUtils.assertNotNull(bizFile, <span class=string>"bizFile must not be null!"</span>);</span><br><span class=line> <span class=type>long</span> <span class=variable>start</span> <span class=operator>=</span> System.currentTimeMillis();</span><br><span class=line> <span class=type>SimpleDateFormat</span> <span class=variable>sdf</span> <span class=operator>=</span> <span class=keyword>new</span> <span class="title class_">SimpleDateFormat</span>(<span class=string>"HH:mm:ss,SSS"</span>);</span><br><span class=line> <span class=type>String</span> <span class=variable>startDate</span> <span class=operator>=</span> sdf.format(<span class=keyword>new</span> <span class="title class_">Date</span>(start));</span><br><span class=line> <span class=type>Biz</span> <span class=variable>biz</span> <span class=operator>=</span> bizFactoryService.createBiz(bizFile);</span><br><span class=line> <span class=type>ClientResponse</span> <span class=variable>response</span> <span class=operator>=</span> <span class=keyword>new</span> <span class="title class_">ClientResponse</span>();</span><br><span class=line> <span class=keyword>if</span> (bizManagerService.getBizByIdentity(biz.getIdentity()) == <span class=literal>null</span> && bizManagerService.registerBiz(biz)) {</span><br><span class=line> <span class=keyword>try</span> {</span><br><span class=line> biz.start(args, envs);</span><br><span class=line> <span class=type>long</span> <span class=variable>end</span> <span class=operator>=</span> System.currentTimeMillis();</span><br><span class=line> response.setCode(ResponseCode.SUCCESS).setMessage(String.format(<span class=string>"Install Biz: %s success, cost: %s ms, started at: %s"</span>, biz.getIdentity(), end - start, startDate)).setBizInfos(Collections.singleton(biz));</span><br><span class=line> getLogger().info(response.getMessage());</span><br><span class=line> <span class=keyword>return</span> response;</span><br><span class=line> } <span class=keyword>catch</span> (Throwable var15) {</span><br><span class=line> <span class=type>long</span> <span class=variable>end</span> <span class=operator>=</span> System.currentTimeMillis();</span><br><span class=line> response.setCode(ResponseCode.FAILED).setMessage(String.format(<span class=string>"Install Biz: %s fail,cost: %s ms, started at: %s"</span>, biz.getIdentity(), end - start, startDate));</span><br><span class=line> getLogger().error(response.getMessage(), var15);</span><br><span class=line> <span class=type>boolean</span> <span class=variable>autoUninstall</span> <span class=operator>=</span> Boolean.parseBoolean(ArkConfigs.getStringValue(<span class=string>"sofa.ark.auto.uninstall.when.failed.enable"</span>, <span class=string>"true"</span>));</span><br><span class=line> <span class=keyword>if</span> (autoUninstall) {</span><br><span class=line> <span class=keyword>try</span> {</span><br><span class=line> getLogger().error(String.format(<span class=string>"Start Biz: %s failed, try to unInstall this biz."</span>, biz.getIdentity()));</span><br><span class=line> biz.stop();</span><br><span class=line> } <span class=keyword>catch</span> (Throwable var14) {</span><br><span class=line> getLogger().error(String.format(<span class=string>"UnInstall Biz: %s fail."</span>, biz.getIdentity()), var14);</span><br><span class=line> }</span><br><span class=line> }</span><br><span class=line></span><br><span class=line> <span class=keyword>throw</span> var15;</span><br><span class=line> }</span><br><span class=line> } <span class=keyword>else</span> {</span><br><span class=line> <span class=keyword>return</span> response.setCode(ResponseCode.REPEAT_BIZ).setMessage(String.format(<span class=string>"Biz: %s has been installed or registered."</span>, biz.getIdentity()));</span><br><span class=line> }</span><br><span class=line> }</span><br></pre></table></figure><p>具体的代码在<figure class="highlight java"><table><tr><td class=gutter><pre><span class=line>1</span><br><span class=line>2</span><br><span class=line>3</span><br><span class=line>4</span><br><span class=line>5</span><br><span class=line>6</span><br><span class=line>7</span><br><span class=line>8</span><br><span class=line>9</span><br><span class=line>10</span><br><span class=line>11</span><br><span class=line>12</span><br><span class=line>13</span><br><span class=line>14</span><br><span class=line>15</span><br><span class=line>16</span><br><span class=line>17</span><br><span class=line>18</span><br><span class=line>19</span><br><span class=line>20</span><br><span class=line>21</span><br><span class=line>22</span><br><span class=line>23</span><br><span class=line>24</span><br><span class=line>25</span><br></pre><td class=code><pre><span class=line><span class=keyword>public</span> Biz <span class="title function_">createBiz</span><span class=params>(File file)</span> <span class=keyword>throws</span> IOException {</span><br><span class=line> <span class=type>boolean</span> <span class=variable>unpackBizWhenInstall</span> <span class=operator>=</span> Boolean.parseBoolean(ArkConfigs.getStringValue(<span class=string>"sofa.ark.unpack.biz.when.install"</span>, <span class=string>"true"</span>));</span><br><span class=line> Object bizArchive;</span><br><span class=line> <span class=keyword>if</span> (ArkConfigs.isEmbedEnable() && unpackBizWhenInstall) {</span><br><span class=line> <span class=type>File</span> <span class=variable>unpackFile</span> <span class=operator>=</span> FileUtils.file(file.getAbsolutePath() + <span class=string>"-unpack"</span>);</span><br><span class=line> <span class=keyword>if</span> (!unpackFile.exists()) {</span><br><span class=line> unpackFile = FileUtils.unzip(file, file.getAbsolutePath() + <span class=string>"-unpack"</span>);</span><br><span class=line> }</span><br><span class=line></span><br><span class=line> <span class=keyword>if</span> (file.exists()) {</span><br><span class=line> file.delete();</span><br><span class=line> }</span><br><span class=line></span><br><span class=line> file = unpackFile;</span><br><span class=line> bizArchive = <span class=keyword>new</span> <span class="title class_">ExplodedBizArchive</span>(unpackFile);</span><br><span class=line> } <span class=keyword>else</span> {</span><br><span class=line> <span class=type>JarFile</span> <span class=variable>bizFile</span> <span class=operator>=</span> <span class=keyword>new</span> <span class="title class_">JarFile</span>(file);</span><br><span class=line> <span class=type>JarFileArchive</span> <span class=variable>jarFileArchive</span> <span class=operator>=</span> <span class=keyword>new</span> <span class="title class_">JarFileArchive</span>(bizFile);</span><br><span class=line> bizArchive = <span class=keyword>new</span> <span class="title class_">JarBizArchive</span>(jarFileArchive);</span><br><span class=line> }</span><br><span class=line></span><br><span class=line> <span class=type>BizModel</span> <span class=variable>biz</span> <span class=operator>=</span> (BizModel)<span class=built_in>this</span>.createBiz((BizArchive)bizArchive);</span><br><span class=line> biz.setBizTempWorkDir(file);</span><br><span class=line> <span class=keyword>return</span> biz;</span><br><span class=line> }</span><br></pre></table></figure><p>接下来是创建biz模块<figure class="highlight java"><table><tr><td class=gutter><pre><span class=line>1</span><br><span class=line>2</span><br><span class=line>3</span><br><span class=line>4</span><br><span class=line>5</span><br><span class=line>6</span><br><span class=line>7</span><br><span class=line>8</span><br><span class=line>9</span><br><span class=line>10</span><br><span class=line>11</span><br><span class=line>12</span><br><span class=line>13</span><br><span class=line>14</span><br><span class=line>15</span><br><span class=line>16</span><br></pre><td class=code><pre><span class=line><span class=keyword>public</span> Biz <span class="title function_">createBiz</span><span class=params>(BizArchive bizArchive)</span> <span class=keyword>throws</span> IOException {</span><br><span class=line> AssertUtils.isTrue(<span class=built_in>this</span>.isArkBiz(bizArchive), <span class=string>"Archive must be a ark biz!"</span>, <span class=keyword>new</span> <span class="title class_">Object</span>[<span class=number>0</span>]);</span><br><span class=line> <span class=type>BizModel</span> <span class=variable>bizModel</span> <span class=operator>=</span> <span class=keyword>new</span> <span class="title class_">BizModel</span>();</span><br><span class=line> <span class=type>Attributes</span> <span class=variable>manifestMainAttributes</span> <span class=operator>=</span> bizArchive.getManifest().getMainAttributes();</span><br><span class=line> <span class=type>String</span> <span class=variable>mainClass</span> <span class=operator>=</span> manifestMainAttributes.getValue(<span class=string>"Main-Class"</span>);</span><br><span class=line> <span class=type>String</span> <span class=variable>startClass</span> <span class=operator>=</span> manifestMainAttributes.getValue(<span class=string>"Start-Class"</span>);</span><br><span class=line> bizModel.setBizState(BizState.RESOLVED, StateChangeReason.CREATED).setBizName(manifestMainAttributes.getValue(<span class=string>"Ark-Biz-Name"</span>)).setBizVersion(manifestMainAttributes.getValue(<span class=string>"Ark-Biz-Version"</span>)).setMainClass(!StringUtils.isEmpty(startClass) ? startClass : mainClass).setPriority(manifestMainAttributes.getValue(<span class=string>"priority"</span>)).setWebContextPath(manifestMainAttributes.getValue(<span class=string>"web-context-path"</span>)).setDenyImportPackages(manifestMainAttributes.getValue(<span class=string>"deny-import-packages"</span>)).setDenyImportClasses(manifestMainAttributes.getValue(<span class=string>"deny-import-classes"</span>)).setDenyImportResources(manifestMainAttributes.getValue(<span class=string>"deny-import-resources"</span>)).setInjectPluginDependencies(<span class=built_in>this</span>.getInjectDependencies(manifestMainAttributes.getValue(<span class=string>"inject-plugin-dependencies"</span>))).setInjectExportPackages(manifestMainAttributes.getValue(<span class=string>"inject-export-packages"</span>)).setDeclaredLibraries(manifestMainAttributes.getValue(<span class=string>"declared-libraries"</span>)).setClassPath(bizArchive.getUrls()).setPluginClassPath(<span class=built_in>this</span>.getPluginURLs());</span><br><span class=line> <span class=keyword>if</span> (!(bizArchive <span class=keyword>instanceof</span> DirectoryBizArchive)) {</span><br><span class=line> bizModel.setBizUrl(bizArchive.getUrl());</span><br><span class=line> }</span><br><span class=line></span><br><span class=line> <span class=type>BizClassLoader</span> <span class=variable>bizClassLoader</span> <span class=operator>=</span> <span class=keyword>new</span> <span class="title class_">BizClassLoader</span>(bizModel.getIdentity(), <span class=built_in>this</span>.getBizUcp(bizModel.getClassPath()), bizArchive <span class=keyword>instanceof</span> ExplodedBizArchive || bizArchive <span class=keyword>instanceof</span> DirectoryBizArchive);</span><br><span class=line> bizClassLoader.setBizModel(bizModel);</span><br><span class=line> bizModel.setClassLoader(bizClassLoader);</span><br><span class=line> <span class=keyword>return</span> bizModel;</span><br><span class=line> }</span><br></pre></table></figure><p>这里就会读取对应biz包的启动类等,以及创建对应的biz模块的类加载器 <code>BizClassLoader</code><br>接下去回到上一层<figure class="highlight java"><table><tr><td class=gutter><pre><span class=line>1</span><br></pre><td class=code><pre><span class=line>biz.start(args, envs);</span><br></pre></table></figure><p>接下来就是BizModel的start方法<figure class="highlight java"><table><tr><td class=gutter><pre><span class=line>1</span><br><span class=line>2</span><br><span class=line>3</span><br></pre><td class=code><pre><span class=line><span class=keyword>public</span> <span class=keyword>void</span> <span class="title function_">start</span><span class=params>(String[] args, Map<String, String> envs)</span> <span class=keyword>throws</span> Throwable {</span><br><span class=line> <span class=built_in>this</span>.doStart(args, envs);</span><br><span class=line> }</span><br></pre></table></figure><p>实际的就是<code>doStart</code>方法<figure class="highlight java"><table><tr><td class=gutter><pre><span class=line>1</span><br><span class=line>2</span><br><span class=line>3</span><br><span class=line>4</span><br><span class=line>5</span><br><span class=line>6</span><br><span class=line>7</span><br><span class=line>8</span><br><span class=line>9</span><br><span class=line>10</span><br><span class=line>11</span><br><span class=line>12</span><br><span class=line>13</span><br><span class=line>14</span><br><span class=line>15</span><br><span class=line>16</span><br><span class=line>17</span><br><span class=line>18</span><br><span class=line>19</span><br><span class=line>20</span><br><span class=line>21</span><br><span class=line>22</span><br><span class=line>23</span><br><span class=line>24</span><br><span class=line>25</span><br><span class=line>26</span><br><span class=line>27</span><br><span class=line>28</span><br><span class=line>29</span><br><span class=line>30</span><br><span class=line>31</span><br><span class=line>32</span><br><span class=line>33</span><br><span class=line>34</span><br><span class=line>35</span><br><span class=line>36</span><br><span class=line>37</span><br><span class=line>38</span><br><span class=line>39</span><br><span class=line>40</span><br><span class=line>41</span><br><span class=line>42</span><br><span class=line>43</span><br><span class=line>44</span><br><span class=line>45</span><br><span class=line>46</span><br><span class=line>47</span><br><span class=line>48</span><br><span class=line>49</span><br><span class=line>50</span><br><span class=line>51</span><br><span class=line>52</span><br><span class=line>53</span><br><span class=line>54</span><br><span class=line>55</span><br></pre><td class=code><pre><span class=line><span class=keyword>private</span> <span class=keyword>void</span> <span class="title function_">doStart</span><span class=params>(String[] args, Map<String, String> envs)</span> <span class=keyword>throws</span> Throwable {</span><br><span class=line> AssertUtils.isTrue(<span class=built_in>this</span>.bizState == BizState.RESOLVED, <span class=string>"BizState must be RESOLVED"</span>, <span class=keyword>new</span> <span class="title class_">Object</span>[<span class=number>0</span>]);</span><br><span class=line> <span class=keyword>if</span> (envs != <span class=literal>null</span>) {</span><br><span class=line> <span class=type>String</span> <span class=variable>mainClassFromEnv</span> <span class=operator>=</span> (String)envs.get(<span class=string>"sofa.ark.biz.main.class"</span>);</span><br><span class=line> <span class=keyword>if</span> (mainClassFromEnv != <span class=literal>null</span>) {</span><br><span class=line> <span class=built_in>this</span>.mainClass = mainClassFromEnv;</span><br><span class=line> ArkLoggerFactory.getDefaultLogger().info(<span class=string>"Ark biz {} will start with main class {} from envs"</span>, <span class=built_in>this</span>.getIdentity(), mainClassFromEnv);</span><br><span class=line> }</span><br><span class=line> }</span><br><span class=line></span><br><span class=line> <span class=keyword>if</span> (<span class=built_in>this</span>.mainClass == <span class=literal>null</span>) {</span><br><span class=line> <span class=keyword>throw</span> <span class=keyword>new</span> <span class="title class_">ArkRuntimeException</span>(String.format(<span class=string>"biz: %s has no main method"</span>, <span class=built_in>this</span>.getBizName()));</span><br><span class=line> } <span class=keyword>else</span> {</span><br><span class=line> <span class=type>ClassLoader</span> <span class=variable>oldClassLoader</span> <span class=operator>=</span> ClassLoaderUtils.pushContextClassLoader(<span class=built_in>this</span>.classLoader);</span><br><span class=line> <span class=type>EventAdminService</span> <span class=variable>eventAdminService</span> <span class=operator>=</span> (EventAdminService)ArkServiceContainerHolder.getContainer().getService(EventAdminService.class);</span><br><span class=line></span><br><span class=line> <span class=keyword>try</span> {</span><br><span class=line> eventAdminService.sendEvent(<span class=keyword>new</span> <span class="title class_">BeforeBizStartupEvent</span>(<span class=built_in>this</span>));</span><br><span class=line> <span class=built_in>this</span>.resetProperties();</span><br><span class=line> <span class=keyword>if</span> (!<span class=built_in>this</span>.isMasterBizAndEmbedEnable()) {</span><br><span class=line> <span class=type>long</span> <span class=variable>start</span> <span class=operator>=</span> System.currentTimeMillis();</span><br><span class=line> ArkLoggerFactory.getDefaultLogger().info(<span class=string>"Ark biz {} start."</span>, <span class=built_in>this</span>.getIdentity());</span><br><span class=line> <span class=type>MainMethodRunner</span> <span class=variable>mainMethodRunner</span> <span class=operator>=</span> <span class=keyword>new</span> <span class="title class_">MainMethodRunner</span>(<span class=built_in>this</span>.mainClass, args, envs);</span><br><span class=line> mainMethodRunner.run();</span><br><span class=line> eventAdminService.sendEvent(<span class=keyword>new</span> <span class="title class_">AfterBizStartupEvent</span>(<span class=built_in>this</span>));</span><br><span class=line> ArkLoggerFactory.getDefaultLogger().info(<span class=string>"Ark biz {} started in {} ms"</span>, <span class=built_in>this</span>.getIdentity(), System.currentTimeMillis() - start);</span><br><span class=line> }</span><br><span class=line> } <span class=keyword>catch</span> (Throwable var11) {</span><br><span class=line> <span class=built_in>this</span>.setBizState(BizState.BROKEN, StateChangeReason.INSTALL_FAILED, getStackTraceAsString(var11));</span><br><span class=line> eventAdminService.sendEvent(<span class=keyword>new</span> <span class="title class_">AfterBizStartupFailedEvent</span>(<span class=built_in>this</span>, var11));</span><br><span class=line> <span class=keyword>throw</span> var11;</span><br><span class=line> } <span class=keyword>finally</span> {</span><br><span class=line> ClassLoaderUtils.popContextClassLoader(oldClassLoader);</span><br><span class=line> }</span><br><span class=line></span><br><span class=line> <span class=type>BizManagerService</span> <span class=variable>bizManagerService</span> <span class=operator>=</span> (BizManagerService)ArkServiceContainerHolder.getContainer().getService(BizManagerService.class);</span><br><span class=line> <span class=keyword>if</span> (bizManagerService.getActiveBiz(<span class=built_in>this</span>.bizName) == <span class=literal>null</span>) {</span><br><span class=line> <span class=built_in>this</span>.setBizState(BizState.ACTIVATED, StateChangeReason.STARTED);</span><br><span class=line> } <span class=keyword>else</span> {</span><br><span class=line> <span class=type>boolean</span> <span class=variable>activateMultiBizVersion</span> <span class=operator>=</span> Boolean.parseBoolean(ArkConfigs.getStringValue(<span class=string>"sofa.ark.activate.multi.biz.version.enable"</span>, <span class=string>"false"</span>));</span><br><span class=line> <span class=keyword>if</span> (activateMultiBizVersion) {</span><br><span class=line> <span class=built_in>this</span>.setBizState(BizState.ACTIVATED, StateChangeReason.STARTED);</span><br><span class=line> } <span class=keyword>else</span> {</span><br><span class=line> <span class=keyword>if</span> (Boolean.getBoolean(<span class=string>"activate.new.module"</span>)) {</span><br><span class=line> <span class=type>Biz</span> <span class=variable>currentActiveBiz</span> <span class=operator>=</span> bizManagerService.getActiveBiz(<span class=built_in>this</span>.bizName);</span><br><span class=line> ((BizModel)currentActiveBiz).setBizState(BizState.DEACTIVATED, StateChangeReason.SWITCHED, String.format(<span class=string>"switch to new biz %s"</span>, <span class=built_in>this</span>.getIdentity()));</span><br><span class=line> <span class=built_in>this</span>.setBizState(BizState.ACTIVATED, StateChangeReason.STARTED, String.format(<span class=string>"switch from old biz: %s"</span>, currentActiveBiz.getIdentity()));</span><br><span class=line> } <span class=keyword>else</span> {</span><br><span class=line> <span class=built_in>this</span>.setBizState(BizState.DEACTIVATED, StateChangeReason.STARTED, <span class=string>"start but is deactivated"</span>);</span><br><span class=line> }</span><br><span class=line></span><br><span class=line> }</span><br><span class=line> }</span><br><span class=line> }</span><br><span class=line> }</span><br></pre></table></figure><p>主要是看这个方法<figure class="highlight java"><table><tr><td class=gutter><pre><span class=line>1</span><br><span class=line>2</span><br><span class=line>3</span><br></pre><td class=code><pre><span class=line>ArkLoggerFactory.getDefaultLogger().info(<span class=string>"Ark biz {} start."</span>, <span class=built_in>this</span>.getIdentity());</span><br><span class=line> <span class=type>MainMethodRunner</span> <span class=variable>mainMethodRunner</span> <span class=operator>=</span> <span class=keyword>new</span> <span class="title class_">MainMethodRunner</span>(<span class=built_in>this</span>.mainClass, args, envs);</span><br><span class=line> mainMethodRunner.run();</span><br></pre></table></figure><p>看到这个run方法<figure class="highlight java"><table><tr><td class=gutter><pre><span class=line>1</span><br><span class=line>2</span><br><span class=line>3</span><br><span class=line>4</span><br><span class=line>5</span><br></pre><td class=code><pre><span class=line><span class=keyword>public</span> Object <span class="title function_">run</span><span class=params>()</span> <span class=keyword>throws</span> Exception {</span><br><span class=line> Class<?> mainClass = Thread.currentThread().getContextClassLoader().loadClass(<span class=built_in>this</span>.mainClassName);</span><br><span class=line> <span class=type>Method</span> <span class=variable>mainMethod</span> <span class=operator>=</span> mainClass.getDeclaredMethod(<span class=string>"main"</span>, String[].class);</span><br><span class=line> <span class=keyword>return</span> mainMethod.invoke((Object)<span class=literal>null</span>, <span class=built_in>this</span>.args);</span><br><span class=line>}</span><br></pre></table></figure><p>最终就是到这个,它就用了这个上下文的类加载器,而这个类加载器就是用的前面设置的bizClassLoader<figure class="highlight java"><table><tr><td class=gutter><pre><span class=line>1</span><br><span class=line>2</span><br><span class=line>3</span><br><span class=line>4</span><br><span class=line>5</span><br></pre><td class=code><pre><span class=line><span class=keyword>public</span> <span class=keyword>static</span> ClassLoader <span class="title function_">pushContextClassLoader</span><span class=params>(ClassLoader newClassLoader)</span> {</span><br><span class=line> <span class=type>ClassLoader</span> <span class=variable>oldClassLoader</span> <span class=operator>=</span> Thread.currentThread().getContextClassLoader();</span><br><span class=line> Thread.currentThread().setContextClassLoader(newClassLoader);</span><br><span class=line> <span class=keyword>return</span> oldClassLoader;</span><br><span class=line>}</span><br></pre></table></figure></div><footer class=post-footer><div class="affiliate-creative affiliate-creative--post-end" data-affiliate-id=tencent-cloud-general><a rel="sponsored noopener" aria-label=腾讯云产品优惠 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