代理模式

静态代理

package Proxy.staticProxy;

public interface Star {
	void confer();
	void signContract();
	void changGe();
	
}

package Proxy.staticProxy;

public class RealStar implements Star{

	@Override
	public void confer() {
		System.out.println("还想");
	}

	@Override
	public void signContract() {
		
		System.out.println("本人已经签订合同");
	}

	@Override
	public void changGe(){
		System.out.println("唱大王来巡山");
	}

}

package Proxy.staticProxy;

public class ProxyStar implements Star{
	private Star star;
	
	
	public ProxyStar(Star star) {
		super();
		this.star = star;
	}

	@Override
	public void confer() {
		System.out.println("代理人负责xxx");
	}

	@Override
	public void signContract() {
		// TODO Auto-generated method stub
		System.out.println("代理人拟写合同");
	}

	@Override
	public void changGe() {
		star.changGe();
	}

}

package Proxy.staticProxy;

public class Client {

	public static void main(String[] args) {
		Star s = new RealStar();
		
		Star pro = new ProxyStar(s);
		
		pro.confer();
		pro.changGe();
		
	}

}

动态代理

package Proxy.dynamic;

public interface Star {
	void confer();
	void signContract();
	void changGe();
	
}

package Proxy.dynamic;

public class RealStar implements Star{

	@Override
	public void confer() {
		System.out.println("还想");
	}

	@Override
	public void signContract() {
		
		System.out.println("本人已经签订合同");
	}

	@Override
	public void changGe(){
		System.out.println("唱大王来巡山");
	}

}

package Proxy.dynamic;

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

public class StarHandler implements InvocationHandler{
	Star realStar;
	
	
	public StarHandler(Star realStar) {
		super();
		this.realStar = realStar;
	}


	@Override
	public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
		// TODO Auto-generated method stub
		
		method.invoke(realStar, args);
		return null;
	}

	
}

package Proxy.dynamic;
import java.lang.reflect.Proxy;


public class Client {
	public static void main(String[] args) {
		
		Star realStar =new RealStar();
		
		StarHandler handle = new StarHandler(realStar);
		
		Star proxy =(Star) Proxy.newProxyInstance(ClassLoader.getSystemClassLoader(), new Class[] {Star.class}, handle);
		proxy.changGe();
	}
}