package com.jiaoyiping.util.demo;

import java.lang.reflect.InvocationHandler;

import java.lang.reflect.Method;

import java.lang.reflect.Proxy;

/**

 * Created with IntelliJ IDEA.

 * User: 焦一平

 * Date: 2015/7/8

 * Time: 10:54

 * To change this template use File | Settings | File Templates.

 * JDK动态代理示例

 */

public class JDKDynamicProxyDemo {

    public static void main(String[] args) {

        Business business = new BusinessImpl();

        Business proxy = (Business)Proxy.newProxyInstance(Thread.currentThread().getContextClassLoader(), new Class[]{Business.class}, new BusinessProxy(business));

        proxy.doBusiness();

    }

}

interface Business {

    void doBusiness();

}

class BusinessImpl implements Business {

    @Override

    public void doBusiness() {

        System.out.println("执行业务方法");

    }

}

class BusinessProxy implements InvocationHandler {

    private Business business;

    public BusinessProxy(Business business) {

        this.business = business;

    }

    @Override

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

        System.out.println("before invoke");

        Object result = method.invoke(business, args);

        System.out.println("after invoke");

        return result;

    }

}