java动态代理

package Demo;

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

public class test1 {
    public static void main(String[] args) {
        Person p = new Student();

        Class[] interfaces = {Person.class};
        Person person = (Person) Proxy.newProxyInstance(test1.class.getClassLoader(), interfaces, new InvocationHandler() {

            @Override
            public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
                // TODO Auto-generated method stub
                System.out.println("加油");
                p.test();
                p.love();
                return null;
            }
        });
        person.love();//根据内部写的方法显示结果，不论外部调用谁，结果一样
    }
}


interface Person {
    public void test();
    public void love();
}

class Student implements Person{

    @Override
    public void test() {
        // TODO Auto-generated method stub
        System.out.println("努力努力再努力");
    }

    @Override
    public void love() {
        // TODO Auto-generated method stub
        System.out.println("i love you ");
    }



}

public interface UserService {
    public void add();
}

public class UserServiceImpl implements UserService{

    public void add() {
        // TODO Auto-generated method stub
        System.out.println("hah");
    }

}

public class ProxyTool implements InvocationHandler{
    //被代理对象
    Object targer ;
    //增强类
    Object advice ;
    public ProxyTool(Object targer, Object advice) {
        super();
        this.targer = targer;
        this.advice = advice;
    }
    public ProxyTool() {
        super();
        // TODO Auto-generated constructor stub
    }

    public  Object getProxy() {
        return Proxy.newProxyInstance(ProxyTool.class.getClassLoader(), targer.getClass().getInterfaces(),this) ;
    }
    public  Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
            // TODO Auto-generated method stub

            Method[] m = advice.getClass().getMethods();
            for (Method method2 : m) {
                String name1 = method.getName();
                String name2 = method2.getName();
                if(name1.equals("add")) {
                if(name2.equals("open")) {
                    method2.invoke(advice, args);
                }
            }
            }
            Object obj = method.invoke(targer, null);
            return obj;
        }   
}

public class Test {

    public static void main(String[] args) {
        // TODO Auto-generated method stub

        ProxyTool tool = new ProxyTool( new UserServiceImpl(),new MyAdvice());
        UserService proxy = (UserService) tool.getProxy();
        proxy.add();
    }

}

public class MyAdvice {
    public  void open() {
        System.out.println("open");
    }
    public  void close() {
        System.out.println("close");
    }
}