```java
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.33</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jdbc</artifactId>
</dependency>
<dependency>
<groupId>tk.mybatis</groupId>
<artifactId>mapper-spring-boot-starter</artifactId>
<version>4.2.3</version>
</dependency>
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter-test</artifactId>
<version>3.0.3</version>
<scope>test</scope>
</dependency>

```

```java
import tk.mybatis.spring.annotation.MapperScan;



@MapperScan(basePackages = "com.xxx.mapper")
@SpringBootApplication
public class Application {

public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
}
```

```java

import org.apache.ibatis.annotations.Mapper;
import tk.mybatis.mapper.common.BaseMapper;

@Mapper
public interface xxxMapper extends BaseMapper<xxx> {
}
```

注意那个 MapperScan 是 tk 的，两个名字一样。