mybatisplus配置过程

1. 引入mybatisplus依赖

<!-- mybatisplus -->
<dependency>
    <groupId>com.baomidou</groupId>
    <artifactId>mybatis-plus-boot-starter</artifactId>
    <version>3.4.2</version>
</dependency>

2. 配置数据源

spring:
  datasource:
    url: jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=utf-8&useSSL=false&autoReconnect=true&failOverReadOnly=false&maxReconnects=10
    username: root
    password: root
    driver-class-name: com.mysql.cj.jdbc.Driver

3. 配置mybatisplus

@Configuration
@MapperScan("com.example.mapper")
public class MybatisPlusConfig {
    @Bean
    public PaginationInterceptor paginationInterceptor() {
        return new PaginationInterceptor();
    }
}

4. 编写mapper

@Mapper
public interface UserMapper extends BaseMapper<User> {
    List<User> selectAll();
}

5. 使用mybatisplus提供的API进行操作

@RunWith(SpringRunner.class)
@SpringBootTest
public class MybatisPlusTest {

    @Autowired
    private UserMapper userMapper;

    @Test
    public void select() {
        List<User> userList = userMapper.selectAll();
        System.out.println(userList);
    }

    @Test
    public void insert() {
        User user = new User();
        user.setUsername("test");
        user.setPassword("123456");
        userMapper.insert(user);
    }
}