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<div class="section" id="sc">
<span id="sc"></span><h1>sc<a class="headerlink" href="#sc" title="永久链接至标题">¶</a></h1>
<blockquote>
<div>查看JVM已加载的类信息</div></blockquote>
<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 <tt class="docutils literal">[d]</tt>、<tt class="docutils literal">[E]</tt>、<tt class="docutils literal">[f]</tt> 和 <tt class="docutils literal">[x:]</tt>。</p>
<div class="section" id="">
<span id="id1"></span><h2>参数说明<a class="headerlink" href="#" title="永久链接至标题">¶</a></h2>
<div class="section" id="">
<span id="id2"></span><h3>参数说明<a class="headerlink" href="#" title="永久链接至标题">¶</a></h3>
<table border="1" class="docutils">
<thead>
<tr>
<th align="right">参数名称</th>
<th align="left">参数说明</th>
</tr>
</thead>
<tbody>
<tr>
<td align="right"><em>class-pattern</em></td>
<td align="left">类名表达式匹配</td>
</tr>
<tr>
<td align="right"><em>method-pattern</em></td>
<td align="left">方法名表达式匹配</td>
</tr>
<tr>
<td align="right">[d]</td>
<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>
</tr>
<tr>
<td align="right">[E]</td>
<td align="left">开启正则表达式匹配，默认为通配符匹配</td>
</tr>
<tr>
<td align="right">[f]</td>
<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>
</tr>
<tr>
<td align="right">[x:]</td>
<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>
</tr>
</tbody>
</table><blockquote>
<div>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<tt class="docutils literal">/</tt>替换为<tt class="docutils literal">.</tt>啦。</div></blockquote>
<blockquote>
<div>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<tt class="docutils literal">options disable-sub-class true</tt>开关</div></blockquote>
</div>
<div class="section" id="">
<span id="id3"></span><h3>使用参考<a class="headerlink" href="#" title="永久链接至标题">¶</a></h3>
<ul>
<li><p class="first">模糊搜索</p>
<div class="highlight-bash notranslate"><div class="highlight hljs"><pre class="bash">$ sc demo.*
demo.MathGame
Affect(row-cnt:1) cost in 55 ms.
</pre></div>
</div>
</li>
<li><p class="first">打印类的详细信息</p>
<div class="highlight-bash notranslate"><div class="highlight hljs"><pre class="bash">$ sc -d demo.MathGame
class-info demo.MathGame
code-source /private/tmp/arthas-demo.jar
name demo.MathGame
isInterface false
isAnnotation false
isEnum false
isAnonymousClass false
isArray false
isLocalClass false
isMemberClass false
isPrimitive false
isSynthetic false
simple-name MathGame
modifier public
annotation
interfaces
super-class +-java.lang.Object
class-loader +-sun.misc.Launcher$AppClassLoader@3d4eac69
+-sun.misc.Launcher$ExtClassLoader@66350f69
classLoaderHash 3d4eac69
Affect(row-cnt:1) cost in 875 ms.
</pre></div>
</div>
</li>
<li><p class="first">打印出类的Field信息</p>
<div class="highlight-bash notranslate"><div class="highlight hljs"><pre class="bash">$ sc -d -f demo.MathGame
class-info demo.MathGame
code-source /private/tmp/arthas-demo.jar
name demo.MathGame
isInterface false
isAnnotation false
isEnum false
isAnonymousClass false
isArray false
isLocalClass false
isMemberClass false
isPrimitive false
isSynthetic false
simple-name MathGame
modifier public
annotation
interfaces
super-class +-java.lang.Object
class-loader +-sun.misc.Launcher$AppClassLoader@3d4eac69
+-sun.misc.Launcher$ExtClassLoader@66350f69
classLoaderHash 3d4eac69
fields modifierprivate,static
type java.util.Random
name random
value java.util.Random@522b4
08a
modifierprivate
type int
name illegalArgumentCount
Affect(row-cnt:1) cost in 19 ms.
</pre></div>
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