Spring-----入门案例

1.idea创建maven项目

https://blog.csdn.net/weixin_42369687/article/details/88940965

2.maven导入spring依赖

https://blog.csdn.net/weixin_42369687/article/details/88969622

3.创建xml文件

https://blog.csdn.net/weixin_42369687/article/details/88969607

4.写Dao层

package Dao;

public interface UserDao1 {
    public void save();
}

package Dao;

public class UserDaoImpl implements  UserDao1 {
    public void save()
    {

        System.out.println("UserDaoImpl执行了.。。。。。。。。。。");
    }
}

5.写service层

package service;

public interface UserService {
    public void save();
}

package service;

import Dao.UserDao1;

public class UserServiceImp implements  UserService {
    private UserDao1 userDao1;

    public UserDao1 getUserDao1() {
        return userDao1;
    }

    public void setUserDao1(UserDao1 userDao1) {
        this.userDao1 = userDao1;
    }

    public void save() {
        userDao1.save();
    }
}

6.将dao交给bean管理

7.将service交给bean管理

8.将dao属性注入给service

9.运行结果为