Java No MyBatis mapper was found in '[com.example.demo.mapper.UserMapper]' pack

出现情景

今天学习Mybatis-plus时候，为启动类的@MapperSacn()添加地址User地址，确保书写无误，但是报错

解决方案

将注解@MapperScan()的User地址只写到父级

即com.example.demo.mapper.UserMapper=>com.example.demo.mapper