SpringBoot整合Mybatis-Plus

目录

（1）引入依赖

（2）yml文件配置

（3）编写Mapper接口，继承BaseMapper

（4）添加#MapperSan注解，扫描Mapper文件夹

 （5）测试方法

Mybatis-Plus官方推荐在SpringBoot工程中使用，Spring过程自然也是可以用的，这里我只介绍SpringBoot的使用        

（1）引入依赖

    <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-starterartifactId>
        dependency>
        <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-starter-testartifactId>
            <scope>testscope>
        dependency>
        
        <dependency>
            <groupId>com.baomidougroupId>
            <artifactId>mybatis-plus-boot-starterartifactId>
            <version>3.5.0version>
        dependency>
        
        <dependency>
            <groupId>mysqlgroupId>
            <artifactId>mysql-connector-javaartifactId>
            <version>8.0.26version>
        dependency>
        
        <dependency>
            <groupId>org.projectlombokgroupId>
            <artifactId>lombokartifactId>
            <optional>trueoptional>
        dependency>

（2）yml文件配置

 
 
# 数据源
spring:
  datasource:
    driver-class-name: com.mysql.cj.jdbc.Driver
    url: jdbc:mysql:///mybatis?serverTimezone=UTC
    username: root
    password: root
 
 
#日志格式
logging:
  pattern:
    console: '%d{HH:mm:ss.SSS} %clr(%-5level) ---  [%-15thread] %cyan(%-50logger{50}):%msg%n'
 
 

（3）编写Mapper接口，继承BaseMapper

public interface UserMapper extends BaseMapper {
 
}

（4）添加#MapperSan注解，扫描Mapper文件夹

@SpringBootApplication
@MapperScan("com.gq.springnootdemo.mapper")
public class SpringnootdemoApplication {
 
    public static void main(String[] args) {
        SpringApplication.run(SpringnootdemoApplication.class, args);
    }
 
}

 （5）测试方法

 
@SpringBootTest
class SpringnootdemoApplicationTests {
 
    @Autowired
    private UserMapper userMapper;
    @Test
    void contextLoads() {
        user users = userMapper.selectById(1);
        System.out.println(users);
    }
 
}