SimpleDynamicProxy.java

package hoodoo.reflection.proxy;

import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;


/**
 * Created by IntelliJ IDEA.
 * User: Hoodoo
 * Date: 11-4-13
 * Time: 上午9:49
 * To change this template use File | Settings | File Templates.
 */

interface Interface {
    void doSomething();

    void somethingElse(String args);
}


class RealObject implements Interface {
    public void doSomething() {
        System.out.println("DoSomething");
    }

    public void somethingElse(String arg) {
        System.out.println("somethingElse   " + arg);
    }
}

class DynamicProxyHandler implements InvocationHandler {
    private Object proxied;

    DynamicProxyHandler(Object proxied) {
        this.proxied = proxied;
    }

    public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
        System.out.println("**********proxy*****:  " + proxy.getClass() + ".method  " + method + ", args :  " + args);//这里是代理进行的操作

        if (args != null) {
            for (Object arg : args) {
                System.out.println("   " + arg);

            }
        }

        return method.invoke(proxied, args);//调用被代理类的方法
    }
}


public class SimpleDynamicPproxy {

    public static void consumer(Interface iafce) {
        iafce.doSomething();
        iafce.somethingElse("hoodoo");
    }

    public static void main(String[] args) {
        RealObject rb = new RealObject();
//        consumer(rb);
        Interface proxy = (Interface) Proxy.newProxyInstance(
                Interface.class.getClassLoader(),
                new Class[]{Interface.class},
                new DynamicProxyHandler(rb)
        );
        consumer(proxy);


    }

}