Consider defining a bean of type 'com.example.demo.sysfile.mapper.SysFileMapper' in your configuration.

To define a bean of type 'com.example.demo.sysfile.mapper.SysFileMapper' in your configuration, you can use the `@Mapper` annotation along with `@Repository` on the mapper interface or class. This will allow Spring to automatically create a bean for the mapper and inject it where needed.

Here's an example:

import org.apache.ibatis.annotations.Mapper;
import org.springframework.stereotype.Repository;

@Mapper
@Repository
public interface SysFileMapper {
    // define your mapper methods here
}

Make sure that you have properly configured MyBatis and set up the necessary database connection properties in your application.properties or application.yml file.

Additionally, ensure that you have properly scanned the package containing the `SysFileMapper` interface or class in your Spring configuration. You can achieve this by using the `@MapperScan` annotation on your configuration class or by including the package in the component scan basePackages attribute.

For example:

@SpringBootApplication
@MapperScan("com.example.demo.sysfile.mapper")
public class DemoApplication {
    // your application config
}

By following these steps, Spring will create a bean for the `SysFileMapper` type, and you can then autowire it into other components or use it directly.