Arthas手册

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jad ​

将jvm中实际运行的类字节码反编译成java代码，便于业务理解

命令选项 ​

命令选项描述
-c, --code <hash>指定ClassLoader的哈希值
--classLoaderClass <class-name>指定ClassLoader的类名
--hideUnicode隐藏unicode，默认false
--lineNumber <boolean>显示行号，默认true
-E, --regex开启正则表达式匹配，默认是通配符匹配
--source-only只输出源码
-h, --help帮助
<class-pattern>类模式字符串
<method-name>方法名

实例 ​

bash
# 简单反编译 包含ClassLoader、Location、源码信息
[arthas@14064]$ jad -c 435181e6 com.alibaba.arthas.deps.ZZZ

ClassLoader:
+-com.taobao.arthas.agent.ArthasClassloader@435181e6
  +-jdk.internal.loader.ClassLoaders$PlatformClassLoader@782458af

Location:
/C:/Users/A/.arthas/lib/3.6.7/arthas/arthas-core.jar

/*
 * Decompiled with CFR.
 */
package com.alibaba.arthas.deps;

public class ZZZ {
}

Affect(row-cnt:1) cost in 19 ms.

# 指定方法源码
[arthas@14064]$ jad --source-only java.lang.String length
@Override
         public int length() {
/*1479*/     return this.value.length >> this.coder();
         }
# 简单反编译 包含ClassLoader、Location、源码信息
[arthas@14064]$ jad -c 435181e6 com.alibaba.arthas.deps.ZZZ

ClassLoader:
+-com.taobao.arthas.agent.ArthasClassloader@435181e6
  +-jdk.internal.loader.ClassLoaders$PlatformClassLoader@782458af

Location:
/C:/Users/A/.arthas/lib/3.6.7/arthas/arthas-core.jar

/*
 * Decompiled with CFR.
 */
package com.alibaba.arthas.deps;

public class ZZZ {
}

Affect(row-cnt:1) cost in 19 ms.

# 指定方法源码
[arthas@14064]$ jad --source-only java.lang.String length
@Override
         public int length() {
/*1479*/     return this.value.length >> this.coder();
         }