静态代理

package com.test.staticProxy;

public interface IUsersService {

    public void insert();
}

package com.test.staticProxy;

//目标类
public class UsersService implements  IUsersService {

    @Override
    public void insert() {
        System.out.println("添加用户");
    }
}

package com.test.staticProxy;

import java.util.Date;

//代理类
public class UsersServiceProxy implements  IUsersService {

    //在代理类中存放一个目标类对象
    private IUsersService usersService=new UsersService();

    @Override
    public void insert() {
         System.out.println("添加开始前:"+new Date());
         usersService.insert();
         System.out.println("添加结束后:"+new Date());
    }
}

测试

package com.test.staticProxy;

import org.junit.Test;

public class TestStaticProxy {

    @Test
    public void test()
    {
         IUsersService usersService=new UsersServiceProxy();

         usersService.insert();

    }
}