Field usersMapper in com.imooc.impl.UserServiceImpl required a bean of type ‘com.imooc.mapper.UsersM

springboot启动：报异常-> Field usersMapper in com.imooc.impl.UserServiceImpl required a bean of type ‘com.imooc.mapper.UsersMapper’ that could not be found.

解决：

1、看注解是否正确标注。 数据层注解：@Mapper 业务层在实现类标注：@Service 2、看导包是否正确。