启动报错找不到 MyBatis 的 DAO 接口 A component required a bean of type ‘xxxMapper‘ that could not be found

启动报错找不到 MyBatis 的 DAO 接口 A component required a bean of type ‘xxxMapper‘ that could not be found

Description:
A component required a bean of type ‘com.jdbc2.mapper.CourseMapper’ that could not be found.

Action:
Consider defining a bean of type ‘com.jdbc2.mapper.CourseMapper’ in your configuration.

原因

系统没有扫描到 MyBatis 的 DAO 接口

解决方式

查看 MapperScan 注解或者配置文件中扫描 MyBatis 接口的包名是否配置正确