【Arthas】单元测试使用Arthas输出动态代理增强类

目录

• 1. 单元测试方法新增代码，阻止程序终止
• 2. 启动Arthas
• 3. 查询指定类的增强类
• 4. 代码输出到文件中
• 5. 增强类源码

1. 单元测试方法新增代码，阻止程序终止

System.in.read();

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2. 启动Arthas

选择项目 com.intellij.rt.junit.JUnitStarter 代表是单元测试进程

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3. 查询指定类的增强类

sc *ControllerName*

输出

com.controller.ControllerName
com.controller.ControllerName$$EnhancerBySpringCGLIB$$1
com.controller.ControllerName$$EnhancerBySpringCGLIB$$1$$FastClassBySpringCGLIB$$2
com.controller.ControllerName$$FastClassBySpringCGLIB$$3

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4. 代码输出到文件中

jad com.controller.ControllerName > C:\\ControllerName1.java
jad com.controller.ControllerName$$EnhancerBySpringCGLIB$$1 > C:\\ControllerName2.java
jad com.controller.ControllerName$$EnhancerBySpringCGLIB$$1$$FastClassBySpringCGLIB$$2 > C:\\ControllerName3.java
jad com.controller.ControllerName$$FastClassBySpringCGLIB$$3 > C:\\ControllerName4.java

仅输出指定方法的源码

jad com.controller.ControllerName$$EnhancerBySpringCGLIB$$1 methodName > C:\\ControllerNameMethod.java

jad --help
jad --source-only

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5. 增强类源码

CGLib方式增强，使用拦截器(MethodInterceptor)执行AOP相关代码
com.controller.ControllerName$$EnhancerBySpringCGLIB$$1

public class ControllerName$$EnhancerBySpringCGLIB$$1
extends ControllerName
implements SpringProxy,
Advised,
Factory {
    
    public final Result TestMethod(String string) {
    try {
        MethodInterceptor methodInterceptor = this.CGLIB$CALLBACK_0;
        if (methodInterceptor == null) {
            ControllerName$$EnhancerBySpringCGLIB$$1.CGLIB$BIND_CALLBACKS(this);
            methodInterceptor = this.CGLIB$CALLBACK_0;
        }
        if (methodInterceptor != null) {
            return (Result)methodInterceptor.intercept(this, CGLIB$TestMethod$0$Method, new Object[]{string}, CGLIB$TestMethod$0$Proxy);
        }
        return super.TestMethod(string);
    }
    catch (Error | RuntimeException throwable) {
        throw throwable;
    }
    catch (Throwable throwable) {
        throw new UndeclaredThrowableException(throwable);
    }
}