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<link rel="icon" href="/images/favicon.ico"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta property="og:title" content="Arthas"><meta property="og:image:alt" content="Alibaba Java Diagnostic Tool Arthas/Alibaba Java诊断利器Arthas - alibaba/arthas: Alibaba Java Diagnostic Tool Arthas/Alibaba Java诊断利器Arthas"><meta property="og:image" content="/images/arthas_mate_image.png"><meta property="og:description" content="Alibaba Java Diagnostic Tool Arthas/Alibaba Java诊断利器Arthas - alibaba/arthas: Alibaba Java Diagnostic Tool Arthas/Alibaba Java诊断利器Arthas"><meta property="og:image:width" content="1200"><meta property="og:image:height" content="600"><meta property="twitter:image:src" content="/images/arthas_mate_image.png"><meta property="twitter:image:alt" content="Alibaba Java Diagnostic Tool Arthas/Alibaba Java诊断利器Arthas - alibaba/arthas: Alibaba Java Diagnostic Tool Arthas/Alibaba Java诊断利器Arthas"><meta itemprop="name" content="Arthas"><meta itemprop="image" content="/images/arthas_mate_image.png"><meta itemprop="description" content="Alibaba Java Diagnostic Tool Arthas/Alibaba Java诊断利器Arthas - alibaba/arthas: Alibaba Java Diagnostic Tool Arthas/Alibaba Java诊断利器Arthas"><script>
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<div id="app"><!--[--><div class="theme-container"><!--[--><header class="navbar"><div class="toggle-sidebar-button" title="切换侧边栏" aria-expanded="false" role="button" tabindex="0"><div class="icon" aria-hidden="true"><span></span><span></span><span></span></div></div><span><a href="/" class="" data-v-61144abc><!----><span class="site-name can-hide" data-v-61144abc>arthas</span><span class="navbar-version" data-v-61144abc>v3.6.6</span></a></span><div class="navbar-items-wrapper" style=""><!--[--><!--]--><nav class="navbar-items can-hide"><!--[--><div class="navbar-item"><a href="/" class="" aria-label="首页"><!--[--><!--]--> 首页 <!--[--><!--]--></a></div><div class="navbar-item"><a class="external-link" href="/doc/arthas-tutorials.html?language=cn&id=arthas-basics" rel="noopener noreferrer" target="_blank" aria-label="在线教程"><!--[--><!--]--><span>在线教程</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></div><div class="navbar-item"><a href="/doc/" class="router-link-active" aria-label="文档"><!--[--><!--]--> 文档 <!--[--><!--]--></a></div><div class="navbar-item"><a href="/doc/commands.md" class="" aria-label="命令列表"><!--[--><!--]--> 命令列表 <!--[--><!--]--></a></div><div class="navbar-item"><a href="/doc/download.md" class="" aria-label="下载"><!--[--><!--]--> 下载 <!--[--><!--]--></a></div><div class="navbar-item"><div class="navbar-dropdown-wrapper"><button class="navbar-dropdown-title" type="button" aria-label="解决方案"><span class="title">解决方案</span><span class="arrow down"></span></button><button class="navbar-dropdown-title-mobile" type="button" aria-label="解决方案"><span class="title">解决方案</span><span class="right arrow"></span></button><ul style="display:none;" class="navbar-dropdown"><!--[--><li class="navbar-dropdown-item"><a class="external-link" href="https://cn.aliyun.com/product/aliware/mse?spm=arthas.topbar.0.0.0" rel="noopener noreferrer" target="_blank" aria-label="微服务解决方案"><!--[--><!--]--><span>微服务解决方案</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 class="navbar-dropdown-item"><a class="external-link" href="https://www.aliyun.com/aliware/txc?spm=arthas.topbar.0.0.0" rel="noopener noreferrer" target="_blank" aria-label="分布式事务解决方案"><!--[--><!--]--><span>分布式事务解决方案</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 class="navbar-dropdown-item"><a class="external-link" href="https://www.aliyun.com/product/ahas?spm=artha
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<span class="token class-name">ClassLoader</span><span class="token operator">:</span>
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<span class="token class-name">Location</span><span class="token operator">:</span>
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<span class="token comment">/*
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* Decompiled with CFR.
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*/</span>
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<span class="token keyword">package</span> <span class="token namespace">java<span class="token punctuation">.</span>lang</span><span class="token punctuation">;</span>
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<span class="token keyword">import</span> <span class="token import"><span class="token namespace">java<span class="token punctuation">.</span>io<span class="token punctuation">.</span></span><span class="token class-name">ObjectStreamField</span></span><span class="token punctuation">;</span>
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<span class="token keyword">import</span> <span class="token import"><span class="token namespace">java<span class="token punctuation">.</span>io<span class="token punctuation">.</span></span><span class="token class-name">Serializable</span></span><span class="token punctuation">;</span>
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<span class="token punctuation">.</span><span class="token punctuation">.</span><span class="token punctuation">.</span>
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<span class="token keyword">public</span> <span class="token keyword">final</span> <span class="token keyword">class</span> <span class="token class-name">String</span>
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<span class="token keyword">implements</span> <span class="token class-name">Serializable</span><span class="token punctuation">,</span>
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<span class="token class-name">Comparable</span><span class="token generics"><span class="token punctuation"><</span><span class="token class-name">String</span><span class="token punctuation">></span></span><span class="token punctuation">,</span>
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<span class="token class-name">CharSequence</span> <span class="token punctuation">{</span>
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<span class="token keyword">private</span> <span class="token keyword">final</span> <span class="token keyword">char</span><span class="token punctuation">[</span><span class="token punctuation">]</span> value<span class="token punctuation">;</span>
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<span class="token keyword">private</span> <span class="token keyword">int</span> hash<span class="token punctuation">;</span>
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<span class="token keyword">private</span> <span class="token keyword">static</span> <span class="token keyword">final</span> <span class="token keyword">long</span> serialVersionUID <span class="token operator">=</span> <span class="token operator">-</span><span class="token number">6849794470754667710L</span><span class="token punctuation">;</span>
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<span class="token keyword">private</span> <span class="token keyword">static</span> <span class="token keyword">final</span> <span class="token class-name">ObjectStreamField</span><span class="token punctuation">[</span><span class="token punctuation">]</span> serialPersistentFields <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">ObjectStreamField</span><span class="token punctuation">[</span><span class="token number">0</span><span class="token punctuation">]</span><span class="token punctuation">;</span>
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<span class="token keyword">public</span> <span class="token keyword">static</span> <span class="token keyword">final</span> <span class="token class-name">Comparator</span><span class="token generics"><span class="token punctuation"><</span><span class="token class-name">String</span><span class="token punctuation">></span></span> <span class="token constant">CASE_INSENSITIVE_ORDER</span> <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">CaseInsensitiveComparator</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">.</span><span class="token punctuation">.</span><span class="token punctuation">.</span>
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<span class="token keyword">public</span> <span class="token class-name">String</span><span class="token punctuation">(</span><span class="token keyword">byte</span><span class="token punctuation">[</span><span class="token punctuation">]</span> byArray<span class="token punctuation">,</span> <span class="token keyword">int</span> n<span class="token punctuation">,</span> <span class="token keyword">int</span> n2<span class="token punctuation">,</span> <span class="token class-name">Charset</span> charset<span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token comment">/*460*/</span> <span class="token keyword">if</span> <span class="token punctuation">(</span>charset <span class="token operator">==</span> <span class="token keyword">null</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token keyword">throw</span> <span class="token keyword">new</span> <span class="token class-name">NullPointerException</span><span class="token punctuation">(</span><span class="token string">"charset"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span>
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<span class="token comment">/*462*/</span> <span class="token class-name">String</span><span class="token punctuation">.</span><span class="token function">checkBounds</span><span class="token punctuation">(</span>byArray<span class="token punctuation">,</span> n<span class="token punctuation">,</span> n2<span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token comment">/*463*/</span> <span class="token keyword">this</span><span class="token punctuation">.</span>value <span class="token operator">=</span> <span class="token class-name">StringCoding</span><span class="token punctuation">.</span><span class="token function">decode</span><span class="token punctuation">(</span>charset<span class="token punctuation">,</span> byArray<span class="token punctuation">,</span> n<span class="token punctuation">,</span> n2<span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span>
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<span class="token punctuation">.</span><span class="token punctuation">.</span><span class="token punctuation">.</span>
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</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="反编译时只显示源代码" tabindex="-1"><a class="header-anchor" href="#反编译时只显示源代码" aria-hidden="true">#</a> 反编译时只显示源代码</h3><p>默认情况下，反编译结果里会带有<code>ClassLoader</code>信息，通过<code>--source-only</code>选项，可以只打印源代码。方便和<a href="/doc/mc.html" class="">mc</a>/<a href="/doc/retransform.html" class="">retransform</a>命令结合使用。</p><div class="language-java ext-java line-numbers-mode"><pre class="language-java"><code>$ jad <span class="token operator">--</span>source<span class="token operator">-</span>only <span class="token class-name"><span class="token namespace">demo<span class="token punctuation">.</span></span>MathGame</span>
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<span class="token comment">/*
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* Decompiled with CFR 0_132.
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*/</span>
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<span class="token keyword">package</span> <span class="token namespace">demo</span><span class="token punctuation">;</span>
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<span class="token keyword">import</span> <span class="token import"><span class="token namespace">java<span class="token punctuation">.</span>io<span class="token punctuation">.</span></span><span class="token class-name">PrintStream</span></span><span class="token punctuation">;</span>
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<span class="token keyword">import</span> <span class="token import"><span class="token namespace">java<span class="token punctuation">.</span>util<span class="token punctuation">.</span></span><span class="token class-name">ArrayList</span></span><span class="token punctuation">;</span>
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<span class="token keyword">import</span> <span class="token import"><span class="token namespace">java<span class="token punctuation">.</span>util<span class="token punctuation">.</span></span><span class="token class-name">Iterator</span></span><span class="token punctuation">;</span>
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<span class="token keyword">import</span> <span class="token import"><span class="token namespace">java<span class="token punctuation">.</span>util<span class="token punctuation">.</span></span><span class="token class-name">List</span></span><span class="token punctuation">;</span>
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<span class="token keyword">import</span> <span class="token import"><span class="token namespace">java<span class="token punctuation">.</span>util<span class="token punctuation">.</span></span><span class="token class-name">Random</span></span><span class="token punctuation">;</span>
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<span class="token keyword">import</span> <span class="token import"><span class="token namespace">java<span class="token punctuation">.</span>util<span class="token punctuation">.</span>concurrent<span class="token punctuation">.</span></span><span class="token class-name">TimeUnit</span></span><span class="token punctuation">;</span>
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<span class="token keyword">public</span> <span class="token keyword">class</span> <span class="token class-name">MathGame</span> <span class="token punctuation">{</span>
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<span class="token keyword">private</span> <span class="token keyword">static</span> <span class="token class-name">Random</span> random <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">Random</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">public</span> <span class="token keyword">int</span> illegalArgumentCount <span class="token operator">=</span> <span class="token number">0</span><span class="token punctuation">;</span>
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<span class="token punctuation">.</span><span class="token punctuation">.</span><span class="token punctuation">.</span>
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</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="反编译指定的函数" tabindex="-1"><a class="header-anchor" href="#反编译指定的函数" aria-hidden="true">#</a> 反编译指定的函数</h3><div class="language-java ext-java line-numbers-mode"><pre class="language-java"><code>$ jad <span class="token class-name"><span class="token namespace">demo<span class="token punctuation">.</span></span>MathGame</span> main
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<span class="token class-name">ClassLoader</span><span class="token operator">:</span>
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<span class="token operator">+</span><span class="token operator">-</span><span class="token class-name"><span class="token namespace">sun<span class="token punctuation">.</span>misc<span class="token punctuation">.</span></span>Launcher</span>$<span class="token class-name">AppClassLoader</span><span class="token annotation punctuation">@232204a1</span>
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<span class="token operator">+</span><span class="token operator">-</span><span class="token class-name"><span class="token namespace">sun<span class="token punctuation">.</span>misc<span class="token punctuation">.</span></span>Launcher</span>$<span class="token class-name">ExtClassLoader</span><span class="token annotation punctuation">@7f31245a</span>
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<span class="token class-name">Location</span><span class="token operator">:</span>
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<span class="token operator">/</span><span class="token keyword">private</span><span class="token operator">/</span>tmp<span class="token operator">/</span>math<span class="token operator">-</span>game<span class="token punctuation">.</span>jar
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<span class="token keyword">public</span> <span class="token keyword">static</span> <span class="token keyword">void</span> <span class="token function">main</span><span class="token punctuation">(</span><span class="token class-name">String</span><span class="token punctuation">[</span><span class="token punctuation">]</span> args<span class="token punctuation">)</span> <span class="token keyword">throws</span> <span class="token class-name">InterruptedException</span> <span class="token punctuation">{</span>
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<span class="token class-name">MathGame</span> game <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">MathGame</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">while</span> <span class="token punctuation">(</span><span class="token boolean">true</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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<span class="token comment">/*16*/</span> game<span class="token punctuation">.</span><span class="token function">run</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token comment">/*17*/</span> <span class="token class-name">TimeUnit</span><span class="token punctuation">.</span><span class="token constant">SECONDS</span><span class="token punctuation">.</span><span class="token function">sleep</span><span class="token punctuation">(</span><span class="token number">1L</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span>
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<span class="token punctuation">}</span>
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</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="反编译时不显示行号" tabindex="-1"><a class="header-anchor" href="#反编译时不显示行号" aria-hidden="true">#</a> 反编译时不显示行号</h3><p><code>--lineNumber</code> 参数默认值为 true，显示指定为 false 则不打印行号。</p><div class="language-java ext-java line-numbers-mode"><pre class="language-java"><code>$ jad <span class="token class-name"><span class="token namespace">demo<span class="token punctuation">.</span></span>MathGame</span> main <span class="token operator">--</span>lineNumber <span class="token boolean">false</span>
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<span class="token class-name">ClassLoader</span><span class="token operator">:</span>
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<span class="token operator">+</span><span class="token operator">-</span><span class="token class-name"><span class="token namespace">sun<span class="token punctuation">.</span>misc<span class="token punctuation">.</span></span>Launcher</span>$<span class="token class-name">AppClassLoader</span><span class="token annotation punctuation">@232204a1</span>
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<span class="token operator">+</span><span class="token operator">-</span><span class="token class-name"><span class="token namespace">sun<span class="token punctuation">.</span>misc<span class="token punctuation">.</span></span>Launcher</span>$<span class="token class-name">ExtClassLoader</span><span class="token annotation punctuation">@7f31245a</span>
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<span class="token class-name">Location</span><span class="token operator">:</span>
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<span class="token operator">/</span><span class="token keyword">private</span><span class="token operator">/</span>tmp<span class="token operator">/</span>math<span class="token operator">-</span>game<span class="token punctuation">.</span>jar
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<span class="token keyword">public</span> <span class="token keyword">static</span> <span class="token keyword">void</span> <span class="token function">main</span><span class="token punctuation">(</span><span class="token class-name">String</span><span class="token punctuation">[</span><span class="token punctuation">]</span> args<span class="token punctuation">)</span> <span class="token keyword">throws</span> <span class="token class-name">InterruptedException</span> <span class="token punctuation">{</span>
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<span class="token class-name">MathGame</span> game <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">MathGame</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token keyword">while</span> <span class="token punctuation">(</span><span class="token boolean">true</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
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game<span class="token punctuation">.</span><span class="token function">run</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token class-name">TimeUnit</span><span class="token punctuation">.</span><span class="token constant">SECONDS</span><span class="token punctuation">.</span><span class="token function">sleep</span><span class="token punctuation">(</span><span class="token number">1L</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span>
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<span class="token punctuation">}</span>
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</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><h3 id="反编译时指定-classloader" tabindex="-1"><a class="header-anchor" href="#反编译时指定-classloader" aria-hidden="true">#</a> 反编译时指定 ClassLoader</h3><div class="custom-container tip"><p class="custom-container-title">提示</p><p>当有多个 <code>ClassLoader</code> 都加载了这个类时，<code>jad</code> 命令会输出对应 <code>ClassLoader</code> 实例的 <code>hashcode</code>，然后你只需要重新执行 <code>jad</code> 命令，并使用参数 <code>-c <hashcode></code> 就可以反编译指定 ClassLoader 加载的那个类了；</p></div><div class="language-java ext-java line-numbers-mode"><pre class="language-java"><code>$ jad <span class="token class-name"><span class="token namespace">org<span class="token punctuation">.</span>apache<span class="token punctuation">.</span>log4j<span class="token punctuation">.</span></span>Logger</span>
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<span class="token class-name">Found</span> more than one <span class="token keyword">class</span> <span class="token keyword">for</span><span class="token operator">:</span> <span class="token class-name"><span class="token namespace">org<span class="token punctuation">.</span>apache<span class="token punctuation">.</span>log4j<span class="token punctuation">.</span></span>Logger</span><span class="token punctuation">,</span> <span class="token class-name">Please</span> use jad <span class="token operator">-</span>c hashcode <span class="token class-name"><span class="token namespace">org<span class="token punctuation">.</span>apache<span class="token punctuation">.</span>log4j<span class="token punctuation">.</span></span>Logger</span>
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<span class="token constant">HASHCODE</span> <span class="token constant">CLASSLOADER</span>
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<span class="token number">69d</span>caba4 <span class="token operator">+</span><span class="token operator">-</span>monitor's <span class="token class-name">ModuleClassLoader</span>
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<span class="token number">6e51</span>ad67 <span class="token operator">+</span><span class="token operator">-</span><span class="token class-name"><span class="token namespace">java<span class="token punctuation">.</span>net<span class="token punctuation">.</span></span>URLClassLoader</span><span class="token annotation punctuation">@6e51ad67</span>
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<span class="token operator">+</span><span class="token operator">-</span><span class="token class-name"><span class="token namespace">sun<span class="token punctuation">.</span>misc<span class="token punctuation">.</span></span>Launcher</span>$<span class="token class-name">AppClassLoader</span><span class="token annotation punctuation">@6951a712</span>
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<span class="token operator">+</span><span class="token operator">-</span><span class="token class-name"><span class="token namespace">sun<span class="token punctuation">.</span>misc<span class="token punctuation">.</span></span>Launcher</span>$<span class="token class-name">ExtClassLoader</span><span class="token annotation punctuation">@6fafc4c2</span>
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<span class="token number">2</span>bdd9114 <span class="token operator">+</span><span class="token operator">-</span>pandora<span class="token operator">-</span>qos<span class="token operator">-</span>service's <span class="token class-name">ModuleClassLoader</span>
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<span class="token number">4</span>c0df5f8 <span class="token operator">+</span><span class="token operator">-</span>pandora<span class="token operator">-</span>framework's <span class="token class-name">ModuleClassLoader</span>
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<span class="token class-name">Affect</span><span class="token punctuation">(</span>row<span class="token operator">-</span>cnt<span class="token operator">:</span><span class="token number">0</span><span class="token punctuation">)</span> cost in <span class="token number">38</span> ms<span class="token punctuation">.</span>
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$ jad <span class="token class-name"><span class="token namespace">org<span class="token punctuation">.</span>apache<span class="token punctuation">.</span>log4j<span class="token punctuation">.</span></span>Logger</span> <span class="token operator">-</span>c <span class="token number">69d</span>caba4
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<span class="token class-name">ClassLoader</span><span class="token operator">:</span>
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<span class="token operator">+</span><span class="token operator">-</span>monitor's <span class="token class-name">ModuleClassLoader</span>
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<span class="token class-name">Location</span><span class="token operator">:</span>
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<span class="token operator">/</span><span class="token class-name">Users</span><span class="token operator">/</span>admin<span class="token operator">/</span>app<span class="token operator">/</span>log4j<span class="token operator">-</span><span class="token number">1.2</span><span class="token number">.14</span><span class="token punctuation">.</span>jar
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<span class="token keyword">package</span> <span class="token namespace">org<span class="token punctuation">.</span>apache<span class="token punctuation">.</span>log4j</span><span class="token punctuation">;</span>
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<span class="token keyword">import</span> <span class="token import"><span class="token namespace">org<span class="token punctuation">.</span>apache<span class="token punctuation">.</span>log4j<span class="token punctuation">.</span>spi<span class="token punctuation">.</span></span><span class="token operator">*</span></span><span class="token punctuation">;</span>
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<span class="token keyword">public</span> <span class="token keyword">class</span> <span class="token class-name">Logger</span> <span class="token keyword">extends</span> <span class="token class-name">Category</span>
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<span class="token punctuation">{</span>
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<span class="token keyword">private</span> <span class="token keyword">static</span> <span class="token keyword">final</span> <span class="token class-name">String</span> <span class="token constant">FQCN</span><span class="token punctuation">;</span>
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<span class="token keyword">protected</span> <span class="token class-name">Logger</span><span class="token punctuation">(</span><span class="token class-name">String</span> name<span class="token punctuation">)</span>
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<span class="token punctuation">{</span>
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<span class="token keyword">super</span><span class="token punctuation">(</span>name<span class="token punctuation">)</span><span class="token punctuation">;</span>
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<span class="token punctuation">}</span>
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<span class="token punctuation">.</span><span class="token punctuation">.</span><span class="token punctuation">.</span>
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<span class="token class-name">Affect</span><span class="token punctuation">(</span>row<span class="token operator">-</span>cnt<span class="token operator">:</span><span class="token number">1</span><span class="token punctuation">)</span> cost in <span class="token number">190</span> ms<span class="token punctuation">.</span>
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</code></pre><div class="line-numbers" aria-hidden="true"><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div><div class="line-number"></div></div></div><p>对于只有唯一实例的 ClassLoader 还可以通过<code>--classLoaderClass</code>指定 class name，使用起来更加方便：</p><p><code>--classLoaderClass</code> 的值是 ClassLoader 的类名，只有匹配到唯一的 ClassLoader 实例时才能工作，目的是方便输入通用命令，而<code>-c <hashcode></code>是动态变化的。</p></div><!--[--><!--]--></div><footer class="page-meta right-menu-padding" data-v-fdd717e0><div class="meta-item edit-link"><a class="external-link meta-item-label" href="https://github.com/alibaba/arthas/edit/master/site/docs/doc/jad.md" rel="noopener noreferrer" target="_blank" aria-label="在 GitHub 上编辑此页"><!--[--><!--]--><span>在 GitHub 上编辑此页</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></div><div class="meta-item last-updated"><span class="meta-item-label">Last Updated: </span><!----></div><div class="meta-item contributors"><span class="meta-item-label">贡献者: </span><span class="meta-item-info"><!--[--><!--[--><span class="contributor" title="email: hengyunabc@gmail.com">hengyunabc</span><!--[-->, <!--]--><!--]--><!--[--><span class="contributor" title="email: i@fatpandac.com">Fatpandac</span><!--[-->, <!--]--><!--]--><!--[--><span class="contributor" title="email: hollowman186@vip.qq.com">Hollow Man</span><!--[-->, <!--]--><!--]--><!--[--><span class="contributor" title="email: hollowman@hollowman.ml">Hollow Man</span><!--[-->, <!--]--><!--]--><!--[--><span class="contributor" title="email: 940375606@qq.com">penguin-wwy</span><!----><!--]--><!--]--></span></div></footer><nav class="page-nav right-menu-padding" data-v-fdd717e0><p class="inner"><span class="prev"><a href="/doc/dump.html" class="" aria-label="dump"><!--[--><!--]--> dump <!--[--><!--]--></a></span><span class="next"><a href="/doc/mc.html" class="" aria-label="mc"><!--[--><!--]--> mc <!--[--><!--]--></a></span></p></nav><!--[--><!--]--></main><!--]--></div><!----><!--]--></div>
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