SpringBoot+MybatisPlus 增删改查学习第三章 （C#转JAVA）

package com.example.demo;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.example.demo.entity.Person;
import com.example.demo.mapper.PersonMapper;
import com.example.demo.service.PersonService;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.test.context.SpringBootTest;

import java.util.ArrayList;
import java.util.List;

@SpringBootTest
class Demo1ApplicationTests {

    @Test
    void contextLoads() {
    }

    private String customName="5555";
    @Autowired
    PersonService personService;
    @Autowired
    PersonMapper personMapper;
    @Test
    void testAdd(){
        QueryWrapper wrapper = new QueryWrapper();
        Person person = new Person();
//        person.setId(1);
        person.setName("小周");
        person.setSex("男");
        person.setHobby("吃");
        person.setAge(18);
        personMapper.insert(person);
    }
    @Test
    void testDel(){
        personMapper.deleteById(1);
    }
    @Test
    void testQuery(){
        Person person = personMapper.selectById(1);
        System.out.println(person);
    }
    @Test
    void testQueryByName(){
        Person person = personMapper.queryPersonByName("小王");
        System.out.println(person);
    }
    @Test
    void testUpdate(){
        Person person = personMapper.selectById(2);
        System.out.println(person);
//        person.setId(2);
        person.setName("小王1");
        person.setSex("男1");
        person.setHobby("喝1");
        person.setAge(181);
        personMapper.updateById(person);
        System.out.println(person);
    }
    @Test
    void testAddList(){
        try {
            List<Person> list = new ArrayList<>();
            Person person = new Person();
//        person.setId(11);
            person.setName("小王");
            person.setSex("男");
            person.setHobby("喝");
            person.setAge(18);
            list.add(person);
            Person person2 = new Person();
//        person2.setId(12);
            person2.setName("小李");
            person2.setSex("男");
            person2.setHobby("吃");
            person2.setAge(18);
            list.add(person2);
            personService.saveBatch(list);
        }catch (Exception ex)
        {
            System.out.print(ex);
        }
    }
}