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<div class="section" id="mbean">
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<h1>mbean<a class="headerlink" href="#mbean" title="永久链接至标题">¶</a></h1>
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<blockquote>
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<div><p>查看 Mbean 的信息</p>
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</div></blockquote>
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<p>这个命令可以便捷的查看或监控 Mbean 的属性信息。</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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<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>name-pattern</em></td>
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<td align="left">名称表达式匹配</td>
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</tr>
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<tr>
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<td align="right"><em>attribute-pattern</em></td>
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<td align="left">属性名表达式匹配</td>
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</tr>
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<tr>
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<td align="right">[m]</td>
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<td align="left">查看元信息</td>
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</tr>
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<tr>
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<td align="right">[i:]</td>
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<td align="left">刷新属性值的时间间隔 (ms)</td>
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</tr>
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<tr>
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<td align="right">[n:]</td>
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<td align="left">刷新属性值的次数</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。仅对属性名有效</td>
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</tr>
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</tbody>
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</table></div>
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<div class="section" id="id2">
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<h2>使用参考<a class="headerlink" href="#id2" title="永久链接至标题">¶</a></h2>
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<p>列出所有 Mbean 的名称：</p>
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<div class="highlight-bash notranslate"><div class="highlight hljs"><pre class="bash">mbean</pre></div>
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</div>
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<p>查看 Mbean 的元信息：</p>
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<div class="highlight-bash notranslate"><div class="highlight hljs"><pre class="bash">mbean -m java.lang:type=Threading</pre></div>
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</div>
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<p>查看mbean属性信息：</p>
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<div class="highlight-bash notranslate"><div class="highlight hljs"><pre class="bash">mbean java.lang:type=Threading </pre></div>
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</div>
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<p>mbean的name支持通配符匹配：</p>
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<div class="highlight-bash notranslate"><div class="highlight hljs"><pre class="bash">mbean java.lang:type=Th*</pre></div>
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</div>
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<blockquote>
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<div><p>注意：ObjectName 的匹配规则与正常的通配符存在差异，详细参见：<a class="reference external" href="https://docs.oracle.com/javase/8/docs/api/javax/management/ObjectName.html?is-external=true">javax.management.ObjectName</a></p>
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</div></blockquote>
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<p>通配符匹配特定的属性字段：</p>
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<div class="highlight-bash notranslate"><div class="highlight hljs"><pre class="bash">mbean java.lang:type=Threading *Count</pre></div>
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</div>
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<p>使用<code class="docutils literal notranslate"><span class="pre">-E</span></code>命令切换为正则匹配：</p>
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<div class="highlight-bash notranslate"><div class="highlight hljs"><pre class="bash">mbean -E java.lang:type=Threading PeakThreadCount|ThreadCount|DaemonThreadCount</pre></div>
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</div>
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<p>使用<code class="docutils literal notranslate"><span class="pre">-i</span></code>命令实时监控：</p>
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<div class="highlight-bash notranslate"><div class="highlight hljs"><pre class="bash">mbean -i 1000 java.lang:type=Threading *Count</pre></div>
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