springBoot和MyBatis整合中出现SpringBoot无法启动时处理方式

在springBoot和Myatis   整合中出现springBoot无法启动   并且报以下错误

Description:

Field userMapper in cn.lijun.controller.UserController required a bean of type 'cn.lijun.mapper.UserMapper' that could not be found.

Action:

Consider defining a bean of type 'cn.lijun.mapper.UserMapper' in your configuration.

  解决方法是：

在启动类上添加注解

@MapperScan(basePackages = "cn.lijun.mapper")