JDK动态代理

 1 package org.windwant.spring.core.proxy;
 2 
 3 import java.lang.reflect.InvocationHandler;
 4 import java.lang.reflect.Method;
 5 import java.lang.reflect.Proxy;
 6 
 7 /**
 8  * Created by windwant on 2016/6/4.
 9  */
10 public class MyJDKProxy implements InvocationHandler{
11     private Object targetObject;
12     public Object getInstance(Object targetObject){
13         this.targetObject = targetObject;
14         return Proxy.newProxyInstance(targetObject.getClass().getClassLoader(), targetObject.getClass().getInterfaces(), this);
15     }
16 
17     public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
18         System.out.println("proxy: before action");
19         Object resutl = method.invoke(targetObject, args);
20         System.out.println("proxy: after action");
21         return resutl;
22     }
23 }

1 MyJDKProxy mp = new MyJDKProxy();
2 XXX ap = (XXX) mp.getInstance(new APerformer());
3 ap.XX();