14-SpringBoot3入门-MyBatis-Plus之CRUD
1、整合
13-SpringBoot3入门-整合MyBatis-Plus-CSDN博客
2、表
3、crud
package com.sgu;
import com.sgu.mapper.UserMapper;
import com.sgu.pojo.User;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import java.util.List;
/**
* 满堂花醉三千客，一剑寒霜十四州。
*
* @Author 中瑞
* @Date 2025/4/2 12:23
*/
@SpringBootTest
public class SampleTest {
/**
* mybatis-plus CRUD
*/
@Autowired
private UserMapper userMapper;
// 增
@Test
public void insert(){
User user = new User();
user.setId(5L);
user.setName("Tom");
user.setAge(17);
user.setEmail("tom@qq.com");
userMapper.insert(user);
}
// 根据id删
@Test
public void delete(){
userMapper.deleteById(5);
}
// 根据id改
@Test
public void update(){
User user = new User();
user.setId(5L);
user.setName("Marry");
user.setEmail("marry@qq.com");
userMapper.updateById(user);
}
// 根据id查询
@Test
public void queryById(){
User user = userMapper.selectById(5);
System.out.println(user);
}
// 查询所有
@Test
public void queryAll(){
List<User> users = userMapper.selectList(null);
for (User u : users){
System.out.println(u);
}
}
}
4、参考
153-mybatis-plus-基于baseMapper的curd增强_哔哩哔哩_bilibili