java 动态代理 生成字节码文件

/* 设置此系统属性,让JVM生成的Proxy类写入文件 */  System.setProperty("sun.misc.ProxyGenerator.saveGeneratedFiles", "true"); 

java 动态代理 实例及机制详解
http://blog.csdn.net/qqduxingzhe/article/details/77455517

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示例

rent()
hello( … )

//// Source code recreated from a .class file by IntelliJ IDEA// (powered by Fernflower decompiler)//package com.sun.proxy;import demo2.Subject;import java.lang.reflect.InvocationHandler;import java.lang.reflect.Method;import java.lang.reflect.Proxy;import java.lang.reflect.UndeclaredThrowableException;public final class $Proxy0 extends Proxy implements Subject {    private static Method m1;    private static Method m3;    private static Method m2;    private static Method m4;    private static Method m0;    public $Proxy0(InvocationHandler var1) throws  {        super(var1);    }    public final boolean equals(Object var1) throws  {        try {            return ((Boolean)super.h.invoke(this, m1, new Object[]{var1})).booleanValue();        } catch (RuntimeException | Error var3) {            throw var3;        } catch (Throwable var4) {            throw new UndeclaredThrowableException(var4);        }    }    public final void rent() throws  {        try {            super.h.invoke(this, m3, (Object[])null);        } catch (RuntimeException | Error var2) {            throw var2;        } catch (Throwable var3) {            throw new UndeclaredThrowableException(var3);        }    }    public final String toString() throws  {        try {            return (String)super.h.invoke(this, m2, (Object[])null);        } catch (RuntimeException | Error var2) {            throw var2;        } catch (Throwable var3) {            throw new UndeclaredThrowableException(var3);        }    }    public final void hello(String var1) throws  {        try {            super.h.invoke(this, m4, new Object[]{var1});        } catch (RuntimeException | Error var3) {            throw var3;        } catch (Throwable var4) {            throw new UndeclaredThrowableException(var4);        }    }    public final int hashCode() throws  {        try {            return ((Integer)super.h.invoke(this, m0, (Object[])null)).intValue();        } catch (RuntimeException | Error var2) {            throw var2;        } catch (Throwable var3) {            throw new UndeclaredThrowableException(var3);        }    }    static {        try {            m1 = Class.forName("java.lang.Object").getMethod("equals", Class.forName("java.lang.Object"));            m3 = Class.forName("demo2.Subject").getMethod("rent");            m2 = Class.forName("java.lang.Object").getMethod("toString");            m4 = Class.forName("demo2.Subject").getMethod("hello", Class.forName("java.lang.String"));            m0 = Class.forName("java.lang.Object").getMethod("hashCode");        } catch (NoSuchMethodException var2) {            throw new NoSuchMethodError(var2.getMessage());        } catch (ClassNotFoundException var3) {            throw new NoClassDefFoundError(var3.getMessage());        }    }}

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