今天完成的事情：

继续完善代码

UserMapper

package org.example.mapper;

import org.example.model.User;
import java.util.List;

public interface UserMapper {
    int addUser(User user);
    int updateUser(User user);
    int deleteUser(int id);
    List<User> queryAllUsers();
    User getUserById(int id);
}

User

package org.example.model;

public class User {
    private int id;
    private String name;
    private long qq;

    // 构造函数
    public User() {
    }

    public User(String name, long qq) {
        this.name = name;
        this.qq = qq;
    }

    // Getter 和 Setter 方法
    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public long getQq() {
        return qq;
    }

    public void setQq(long qq) {
        this.qq = qq;
    }

    @Override
    public String toString() {
        return "User{id=" + id + ", name='" + name + "', qq=" + qq + "}";
    }
}

UserService

package org.example.service;

import org.example.model.User;

import java.util.List;

public interface UserService {
    int addUser(User user);

    int updateUser(User user);

    int deleteUser(int id);

    List<User> queryAllUsers();

    User getUserById(int id);
}

UserServiceImpl

package org.example.service.Impl;

import org.example.mapper.UserMapper;
import org.example.model.User;
import org.example.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;

@Service
public class UserServiceImpl implements UserService {

    @Autowired
    private UserMapper userMapper;

    @Override
    public int addUser(User user) {
        return userMapper.addUser(user);
    }
    @Override
    public int updateUser(User user) {
        return userMapper.updateUser(user);
    }

    @Override
    public int deleteUser(int id) {
        return userMapper.deleteUser(id);
    }
    @Override
    public List<User> queryAllUsers() {
        return userMapper.queryAllUsers();
    }
    @Override
    public User getUserById(int id) {
        return userMapper.getUserById(id);
    }
}

UserServiceTest

package org.example;

import org.example.model.User;
import org.example.service.UserService;
import org.junit.Before;
import org.junit.Test;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import java.util.List;

import static org.junit.Assert.*;

public class UserServiceTest {

    private UserService userService;
    private ClassPathXmlApplicationContext context;

    @Before
    public void setUp() {
        // 加载 Spring XML 配置文件
        context = new ClassPathXmlApplicationContext("beans.xml");
        userService = context.getBean(UserService.class);
    }

    @Test
    public void testAddUser() {
        User user = new User("Tom", 123456);
        int result = userService.addUser(user);
        System.out.println(user);
        assertEquals(1, result);
    }

    @Test
    public void testUpdateUser() {
        User user = new User("Tim", 123456);
        user.setId(91);
        int updatedUser = userService.updateUser(user);
        if (updatedUser == 1) {
            System.out.println("更新成功.");
        } else {
            System.out.println("没有找到改用户.");
        }
    }

    @Test
    public void testDeleteUser() {
        int result = userService.deleteUser(92 );
        if (result == 1) {
            System.out.println("删除成功.");
        } else {
            System.out.println("没有找到改用户.");
        }
    }

    @Test
    public void testQueryAllUsers() {
        List<User> users = userService.queryAllUsers();
        System.out.println("查询所有用户:");
        users.forEach(user -> System.out.println(user));
    }

    @Test
    public void testGetUserById() {
        User user = userService.getUserById(92);
        if (user == null) {
            System.out.println("没有找到改用户.");
        }else {
            System.out.println(user);
        }
    }
}

明天计划的事情：（一定要写非常细致的内容）

对代码进行进一步完善，理解代码的含义

遇到的问题：（遇到什么困难，怎么解决的）

对代码含义一知半解

收获：（通过今天的学习，学到了什么知识）

学会了用spring设置框架