• 编写Api接口文件

package com.uwo.resources.ui.proxy;/** * Created by yanhao on 2017/5/12. */public interface Api {    String user();}

• 编写实现InvocationHandler接口

package com.uwo.resources.ui.proxy;import java.lang.reflect.InvocationHandler;import java.lang.reflect.Method;/** * Created by yanhao on 2017/5/12. */public class UwoHandler implements InvocationHandler{    public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {        return "YH";    }}

• 编写测试类

package com.uwo.resources.ui.proxy;import java.lang.reflect.Proxy;/** * Created by yanhao on 2017/5/12. */public class Test {    public static void main(String[] args){        Api user = (Api)Proxy.newProxyInstance(Test.class.getClassLoader(), new Class[]{Api.class}, new UwoHandler());        String s = user.user();        System.out.println(s);    }}