[MyBatisPlus]测试BaseMapper的功能&&测试自定义功能

Posted 2022-03-16 唐火

测试BaseMapper的功能

添加功能

	/**
     * 实现新增用户信息
     */
  @Test
    public void testInsert()
    
        User user = new User();
        user.setName("张三");
        user.setAge(23);
        user.setEmail("[e-mail]");
        int result = userMapper.insert(user);
        System.out.println("result = "+result);
        System.out.println("id = "+user.getId());
    

删除功能

 /**
     * 通过id删除用户信息
     */
    @Test
    public void testDelete()
    
        int result = userMapper.deleteById(1499367002800951298L);
        System.out.println("result = "+result);

    

/**
     * 通过map集合中设置的条件删除用户信息
     */
    @Test
    public void testDelete01()
    
        Map<String,Object> map = new HashMap<>();
        map.put("name","张三");
        map.put("age",23);
        int result = userMapper.deleteByMap(map);
        System.out.println("result = "+result);

    

 /**
     * 通过多个id实现批量删除
     */
    @Test
    public void testDelete02()
    
        List<Long> list = Arrays.asList(1L, 2L, 3L);
        int result = userMapper.deleteBatchIds(list);
        System.out.println("result = "+result);

    

修改功能

 /**
     * 修改用户信息
     * UPDATE user SET name=?, email=? WHERE id=?
     */
    @Test
    public void testUpdate()
    
        User user = new User();
        user.setId(4L);
        user.setName("李四");
        user.setEmail("[e-mail]");
        int result = userMapper.updateById(user);
        System.out.println("result = "+result);
    

查询功能

/**
     * 通过id查询用户信息
     */
    @Test
    public void testSelect()
    
        User user = userMapper.selectById(1L);
        System.out.println(user);
    

 /**
     * 通过多个id查询多个用户信息
     */
    @Test
    public void testSelect01()
    
        List<Long> list = Arrays.asList(1L, 2L, 3L);
        List<User> users = userMapper.selectBatchIds(list);
        users.forEach(System.out::println);
    

/**
     * 通过map中设置的条件查询
     */
    @Test
    public void testSelect02()
    
       Map<String,Object> map = new HashMap<>();
       map.put("name","Jack");
       map.put("age",20);
       List<User> users = userMapper.selectByMap(map);

    

/**
     * 查询所有数据
     */
    @Test
    public void testSelect02()
    

        List<User> users = userMapper.selectList(null);
        users.forEach(System.out::println);

    

自定义功能

不修改的话就采用mybatisplus的默认路径

UserMapper

package com.xxxx.mybatisplus.mapper;

import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import com.xxxx.mybatisplus.pojo.User;
import org.springframework.stereotype.Repository;

import java.util.Map;

// 将类或者接口标记为持久层组件 这样就不会看见test类中的红线警告了
@Repository
public interface UserMapper extends BaseMapper<User> 


    /**
     * 根据id查询用户信息为map集合
     * @param id
     * @return
     */
    Map<String,Object> selectMapById(Long id);

UserMapper.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
        PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.xxxx.mybatisplus.mapper.UserMapper">

<!--    Map<String,Object> selectMapById(Long id);-->
    <select id="selectMapById" resultType="map">
        select id,name,age,email from user where id = #id
    </select>

</mapper>

测试

 @Test
    public void testSelect03()
    

        Map<String,Object> map =userMapper.selectMapById(1L);
        System.out.println(map);