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*/@Autowiredprivate UserMapper userMapper;// 增@Testpublic void insert(){User user = new User();user.setId(5L);user.setName("Tom");user.setAge(17);user.setEmail("[e-mail]");userMapper.insert(user);}// 根据id删@Testpublic void delete(){userMapper.deleteById(5);}// 根据id改@Testpublic void update(){User user = new User();user.setId(5L);user.setName("Marry");user.setEmail("[e-mail]");userMapper.updateById(user);}// 根据id查询@Testpublic void queryById(){User user = userMapper.selectById(5);System.out.println(user);}// 查询所有@Testpublic 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