mybatis自动生成的bean接口在service层找不到

报错如下：

Description:

Field tbItemMapper in com.e3mall.cms.service.cmsServiceImpl required a bean of type
'com.e3mall.cms.dao.mapper.TbItemMapper' that could not be found.

Action:

Consider defining a bean of type 'com.e3mall.cms.dao.mapper.TbItemMapper' in your configuration.

环境：

mapper接口上已经添加了@Component，且pom.xml中不会过滤调xml文件。

原因：

springboot默认不会扫描到对应的bean文件

解决：

方式1、在mapper接口上添加@Mapper

方式2、在application启动类上添加@MapperScan(basePackages = {"com.e3mall.cms.dao.mapper"})