Springboot整合mybatisplus快速入门

<!--mybatis-plus-->
 <dependency>
     <groupId>com.baomidou</groupId>
     <artifactId>mybatis-plus-boot-starter</artifactId>
     <version>3.5.1</version>
 </dependency>

spring.datasource.username=root
spring.datasource.password=1234
spring.datasource.url=jdbc:mysql://localhost:3306/test?serverTimezone=UTC&useUnicode=true&characterEncoding=utf-8
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
# 下面为自定义SQL需要配置的
mybatis-plus.type-aliases-package=com.peng.pojo
mybatis-plus.mapper-locations=classpath:mapper/*.xml

package com.peng.mapper;
import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import com.peng.pojo.User;
import org.springframework.stereotype.Component;
@Component //或者@Repository
public interface UserMapper extends BaseMapper<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;
@SpringBootTest
class MybatisplusApplicationTests {
    @Autowired
    private UserMapper userMapper;
    @Test
    void contextLoads() {
        List<User> userList = userMapper.selectList(null);
        System.out.println(userList);
    }
}