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<div class="section" id="redefine">
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<span id="redefine"></span><h1>redefine<a class="headerlink" href="#redefine" title="永久链接至标题">¶</a></h1>
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<blockquote>
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<div>加载外部的<code class="docutils literal notranslate"><span class="pre">.class</span></code>文件，redefine jvm已加载的类。</div></blockquote>
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<p>参考：<a class="reference external" href="https://docs.oracle.com/javase/8/docs/api/java/lang/instrument/Instrumentation.html#redefineClasses-java.lang.instrument.ClassDefinition...-">Instrumentation#redefineClasses</a></p>
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<blockquote>
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<div>注意， redefine后的原来的类不能恢复，redefine有可能失败（比如增加了新的field），参考jdk本身的文档。</div></blockquote>
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<div class="section" id="">
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<span id="id1"></span><h2>参数说明<a class="headerlink" href="#" 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">[c:]</td>
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<td align="left">ClassLoader的hashcode</td>
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</tr>
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<tr>
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<td align="right">[p:]</td>
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<td align="left">外部的<code>.class</code>文件的完整路径，支持多个</td>
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</tr>
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</tbody>
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<div class="section" id="">
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<span id="id2"></span><h2>使用参考<a class="headerlink" href="#" title="永久链接至标题">¶</a></h2>
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<div class="highlight-default notranslate"><div class="highlight"><pre><span></span> redefine -p /tmp/Test.class
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redefine -c 327a647b -p /tmp/Test.class /tmp/Test\$Inner.class
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</pre></div>
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