springboot如何使用mybatis

先在pom文件里添加相关依赖

<!--配置mybatis相关依赖-->
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-jdbc</artifactId>
</dependency>

<dependency>
    <groupId>mysql</groupId>
    <artifactId>mysql-connector-java</artifactId>
</dependency>

<dependency>
    <groupId>org.mybatis.spring.boot</groupId>
    <artifactId>mybatis-spring-boot-starter</artifactId>
    <version>1.3.0</version>
</dependency>

配置文件中加入相关配置 

#配置数据源
spring.datasource.url=jdbc:mysql://localhost:3306/witkey
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
spring.datasource.username=root
spring.datasource.password=123

#mybatis相关配置
#mybatis映射文件的位置
mybatis.mapper-locations=classpath:mapping/*.xml
#起别名
mybatis.type-aliases-package=com.buba.pojo
#驼峰映射
mybatis.configuration.map-underscore-to-camel-case=true
#打印mybatis的sql语句
logging.level.com.buba.mapper=debug

然后在springboot启动类上面加注解@MapperScan(basePackages = {"com.buba.mapper"})

在mapper的接口上必须写@Repository注解 

打印的sql语句