package com.dy.pipIrrGlobal.daoDemo; import com.baomidou.mybatisplus.core.mapper.BaseMapper; import com.dy.pipIrrGlobal.pojoBa.BaUser; import com.dy.pipIrrGlobal.pojoDemo.DemoAddress; import org.apache.ibatis.annotations.Mapper; import org.apache.ibatis.annotations.Param; @Mapper public interface DemoAddressMapper extends BaseMapper { DemoAddress selectByUserId(@Param("userId") Long userId) ; }