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aria-label="批处理功能"><!--[--><!--]--> 批处理功能 <!--[--><!--]--></a><!----></li><li><p tabindex="0" class="sidebar-item">ognl 表达式用法 <!----></p><ul style="display:none;" class="sidebar-item-children"><!--[--><li><a class="external-link sidebar-item" href="https://github.com/alibaba/arthas/issues/11" rel="noopener noreferrer" target="_blank" aria-label="活用ognl表达式"><!--[--><!--]--><span>活用ognl表达式</span><span><svg class="external-link-icon" xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewbox="0 0 100 100" width="15" height="15"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><span class="external-link-icon-sr-only">在新窗口打开</span></span><!--[--><!--]--></a><!----></li><li><a class="external-link sidebar-item" 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rel="noopener noreferrer" target="_blank" aria-label="用户案列"><!--[--><!--]--><span>用户案列</span><span><svg class="external-link-icon" xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewbox="0 0 100 100" width="15" height="15"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><span class="external-link-icon-sr-only">在新窗口打开</span></span><!--[--><!--]--></a><!----></li><li><a class="external-link sidebar-item" href="https://github.com/alibaba/arthas" rel="noopener noreferrer" target="_blank" aria-label="Start me at github"><!--[--><!--]--><span>Start me at github</span><span><svg class="external-link-icon" xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewbox="0 0 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points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><span class="external-link-icon-sr-only">在新窗口打开</span></span><!--[--><!--]--></a><!----></li><li><a class="external-link sidebar-item" href="https://github.com/alibaba/arthas/releases" rel="noopener noreferrer" target="_blank" aria-label="Release Notes"><!--[--><!--]--><span>Release Notes</span><span><svg class="external-link-icon" xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewbox="0 0 100 100" width="15" height="15"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><span class="external-link-icon-sr-only">在新窗口打开</span></span><!--[--><!--]--></a><!----></li><li><a href="/doc/contact-us.md" class="sidebar-item" aria-label="QQ群/钉钉群"><!--[--><!--]--> QQ群/钉钉群 <!--[--><!--]--></a><!----></li><!--]--></ul></li><!--]--></ul><!--[--><!--]--></aside><!--]--><!--[--><main class="page" data-v-e0e60120><!--[--><!--]--><div class="right-menu-padding theme-default-content" data-v-e0e60120><!--[--><!--]--><div class="right-menu-wrapper" data-v-e0e60120 data-v-7f642c19><div class="right-menu-margin" data-v-7f642c19><div class="right-menu-title" data-v-7f642c19>目录</div><div class="right-menu-content" data-v-7f642c19><!--[--><!--]--></div></div></div><div data-v-e0e60120><h1 id="classloader" tabindex="-1"><a class="header-anchor" href="#classloader" aria-hidden="true">#</a> classloader</h1><p><a href="https://arthas.aliyun.com/doc/arthas-tutorials?language=cn&id=command-classloader" target="_blank" rel="noopener noreferrer"><code>classloader</code>在线教程<span><svg class="external-link-icon" xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewbox="0 0 100 100" width="15" height="15"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><span class="external-link-icon-sr-only">在新窗口打开</span></span></a></p><div class="custom-container tip"><p class="custom-container-title">提示</p><p>查看 classloader 的继承树，urls，类加载信息</p></div><p><code>classloader</code> 命令将 JVM 中所有的 classloader 的信息统计出来，并可以展示继承树，urls 等。</p><p>可以让指定的 classloader 去 getResources，打印出所有查找到的 resources 的 url。对于<code>ResourceNotFoundException</code>比较有用。</p><h3 id="参数说明" tabindex="-1"><a class="header-anchor" href="#参数说明" aria-hidden="true">#</a> 参数说明</h3><table><thead><tr><th style="text-align:right;">参数名称</th><th style="text-align:left;">参数说明</th></tr></thead><tbody><tr><td style="text-align:right;">[l]</td><td style="text-align:left;">按类加载实例进行统计</td></tr><tr><td style="text-align:right;">[t]</td><td style="text-align:left;">打印所有 ClassLoader 的继承树</td></tr><tr><td style="text-align:right;">[a]</td><td style="text-align:left;">列出所有 ClassLoader 加载的类，请谨慎使用</td></tr><tr><td style="text-align:right;"><code>[c:]</code></td><td style="text-align:left;">ClassLoader 的 hashcode</td></tr><tr><td style="text-align:right;"><code>[classLoaderClass:]</code></td><td style="text-align:left;">指定执行表达式的 ClassLoader 的 class name</td></tr><tr><td style="text-align:right;"><code>[c: r:]</code></td><td style="text-align:left;">用 ClassLoader 去查找 resource</td></tr><tr><td style="text-align:right;"><code>[c: load:]</code></td><td style="text-align:left;">用 ClassLoader 去加载指定的类</td></tr></tbody></table><h3 id="使用参考" tabindex="-1"><a class="header-anchor" href="#使用参考" aria-hidden="true">#</a> 使用参考</h3><h4 id="按类加载类型查看统计信息" tabindex="-1"><a class="header-anchor" href="#按类加载类型查看统计信息" aria-hidden="true">#</a> 按类加载类型查看统计信息</h4><div class="language-bash ext-sh line-numbers-mode"><pre class="language-bash"><code>$ classloader
|