java----静态代理

Posted 2021-02-10 神级尘埃

静态代理没啥好说的，直接上代码

package com.yk.aop.staticproxy;

import org.junit.jupiter.api.Test;

//1.接口
public interface IUserDao {
    void save();

    void find();
}
//2.实现类
 class UserDao implements IUserDao {

    public void save() {
        System.out.println("保存用户");
    }

    public void find() {
        System.out.println("查询用户");
    }

    @Test
    public void test(){
        System.out.print(111);
    }
}

/**
 * 3.静态代理
 */
class UserDaoProxy implements IUserDao {
    private IUserDao target;

    public UserDaoProxy(IUserDao target) {
        this.target = target;
    }

    public void save() {
        System.out.println("开启事物");
        target.save();
        System.out.println("提交事务");
    }

    public void find() {
        System.out.println("查找前操作");
        target.find();
        System.out.println("查找后操作");
    }

}