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3.1.7
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<li>sc</li>
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<a href="https://github.com/alibaba/arthas/blob/master/site/src/site/sphinx/sc.md" class="fa fa-github"> Edit on GitHub</a>
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<div class="section" id="sc">
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<h1>sc<a class="headerlink" href="#sc" title="永久链接至标题">¶</a></h1>
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<blockquote>
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<div><p>查看JVM已加载的类信息</p>
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</div></blockquote>
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<p>“Search-Class” 的简写，这个命令能搜索出所有已经加载到 JVM 中的 Class 信息，这个命令支持的参数有 <code class="docutils literal notranslate"><span class="pre">[d]</span></code>、<code class="docutils literal notranslate"><span class="pre">[E]</span></code>、<code class="docutils literal notranslate"><span class="pre">[f]</span></code> 和 <code class="docutils literal notranslate"><span class="pre">[x:]</span></code>。</p>
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<div class="section" id="id1">
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<h2>参数说明<a class="headerlink" href="#id1" title="永久链接至标题">¶</a></h2>
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<div class="section" id="id2">
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<h3>参数说明<a class="headerlink" href="#id2" title="永久链接至标题">¶</a></h3>
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<table border="1" class="docutils">
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<thead>
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<tr>
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<th align="right">参数名称</th>
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<th align="left">参数说明</th>
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</tr>
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</thead>
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<tbody>
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<tr>
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<td align="right"><em>class-pattern</em></td>
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<td align="left">类名表达式匹配</td>
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</tr>
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<tr>
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<td align="right"><em>method-pattern</em></td>
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<td align="left">方法名表达式匹配</td>
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</tr>
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<tr>
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<td align="right">[d]</td>
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<td align="left">输出当前类的详细信息，包括这个类所加载的原始文件来源、类的声明、加载的ClassLoader等详细信息。<br/>如果一个类被多个ClassLoader所加载，则会出现多次</td>
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</tr>
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<tr>
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<td align="right">[E]</td>
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<td align="left">开启正则表达式匹配，默认为通配符匹配</td>
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</tr>
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<tr>
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<td align="right">[f]</td>
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<td align="left">输出当前类的成员变量信息（需要配合参数-d一起使用）</td>
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</tr>
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<tr>
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<td align="right">[x:]</td>
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<td align="left">指定输出静态变量时属性的遍历深度，默认为 0，即直接使用 <code>toString</code> 输出</td>
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</tr>
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</tbody>
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</table><blockquote>
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<div><p>class-pattern支持全限定名，如com.taobao.test.AAA，也支持com/taobao/test/AAA这样的格式，这样，我们从异常堆栈里面把类名拷贝过来的时候，不需要在手动把<code class="docutils literal notranslate"><span class="pre">/</span></code>替换为<code class="docutils literal notranslate"><span class="pre">.</span></code>啦。</p>
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</div></blockquote>
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<blockquote>
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<div><p>sc 默认开启了子类匹配功能，也就是说所有当前类的子类也会被搜索出来，想要精确的匹配，请打开<code class="docutils literal notranslate"><span class="pre">options</span> <span class="pre">disable-sub-class</span> <span class="pre">true</span></code>开关</p>
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</div></blockquote>
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</div>
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<div class="section" id="id3">
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<h3>使用参考<a class="headerlink" href="#id3" title="永久链接至标题">¶</a></h3>
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<ul>
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<li><p>模糊搜索</p>
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<div class="highlight-bash notranslate"><div class="highlight hljs"><pre class="bash">$ sc demo.*
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demo.MathGame
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Affect(row-cnt:1) cost in 55 ms.</pre></div>
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</div>
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</li>
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<li><p>打印类的详细信息</p>
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<div class="highlight-bash notranslate"><div class="highlight hljs"><pre class="bash">$ sc -d demo.MathGame
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class-info demo.MathGame
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code-source /private/tmp/arthas-demo.jar
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name demo.MathGame
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isInterface false
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isAnnotation false
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isEnum false
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isAnonymousClass false
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isArray false
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isLocalClass false
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isMemberClass false
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isPrimitive false
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isSynthetic false
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simple-name MathGame
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modifier public
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annotation
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interfaces
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super-class +-java.lang.Object
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class-loader +-sun.misc.Launcher$AppClassLoader@3d4eac69
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+-sun.misc.Launcher$ExtClassLoader@66350f69
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classLoaderHash 3d4eac69
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Affect(row-cnt:1) cost in 875 ms.</pre></div>
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</div>
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</li>
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<li><p>打印出类的Field信息</p>
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<div class="highlight-bash notranslate"><div class="highlight hljs"><pre class="bash">$ sc -d -f demo.MathGame
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class-info demo.MathGame
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code-source /private/tmp/arthas-demo.jar
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name demo.MathGame
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isInterface false
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isAnnotation false
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isEnum false
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isAnonymousClass false
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isArray false
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isLocalClass false
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isMemberClass false
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isPrimitive false
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isSynthetic false
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simple-name MathGame
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modifier public
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annotation
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interfaces
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super-class +-java.lang.Object
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class-loader +-sun.misc.Launcher$AppClassLoader@3d4eac69
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+-sun.misc.Launcher$ExtClassLoader@66350f69
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classLoaderHash 3d4eac69
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fields modifierprivate,static
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type java.util.Random
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name random
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value java.util.Random@522b4
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08a
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modifierprivate
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type int
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name illegalArgumentCount
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Affect(row-cnt:1) cost in 19 ms.</pre></div>
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</div>
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</li>
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</ul>
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