1\被代理类

package com.gyarmy.proxy;



public class Liyuchun implements Person {



	@Override

	public String sing(String name) {

		// TODO Auto-generated method stub

		System.out.println("李宇春 唱歌..."+name);

		return "sing over";

	}



	@Override

	public String dance(String name) {

		// TODO Auto-generated method stub

		System.out.println("李宇春 跳舞.."+name);

		return "dance over";

	}



}

2\代理类

package com.gyarmy.proxy;



import java.lang.reflect.InvocationHandler;

import java.lang.reflect.Method;

import java.lang.reflect.Proxy;



public class ProxyLiyuchun {

	

	private Liyuchun chunchun = new Liyuchun();

	

	public Object getProxy()

	{

		//设计代理类

		Person proxyChunchun = (Person)Proxy.newProxyInstance(ProxyLiyuchun.class.getClassLoader(), Liyuchun.class.getInterfaces(), new InvocationHandler() {

			

			@Override

			public Object invoke(Object proxy, Method method, Object[] args)

					throws Throwable {

				if(method.getName().equals("sing")){	

					//说明调用的是 sing 方法, 现在是向 让 chunchun 去唱歌了 

					// 让真实的 chunchun 去唱歌 

					System.out.println("拿 1 万 刀 来 ....");

					return method.invoke(chunchun, args);   // chunchun.sing();

				}else if(method.getName().equals("dance")){

					

					System.out.println("拿两万刀 来 ...");

					return method.invoke(chunchun, args);   // chunchun.dance();

				}else{

					

					System.out.println("春哥没这个服务...");

					return null;

				}

			}

		});

		

		return proxyChunchun;

	}

	

}

3\测试使用

package com.gyarmy.proxy;



import org.junit.Test;



public class demoProxy {

	

	@Test

	public void test1()

	{

		ProxyLiyuchun p = new ProxyLiyuchun();

		Person li = (Person)p.getProxy();

		String sing = li.sing("多多");

		System.out.println(sing);

		String dance = li.dance("fuck");

		System.out.println(dance);

		//li.hashCode();

		

		

	}

}