package com.muzhi.zgd.mapper; import com.baomidou.mybatisplus.core.mapper.BaseMapper; import com.muzhi.zgd.entity.Bumen; import com.muzhi.zgd.entity.Jiaozhigong; import org.springframework.stereotype.Repository; //在对应的Mapper上面继承基本的类BaseMapper @Repository//代表持久层,或者加入@Mapper注解 public interface JiaozhigongMapper extends BaseMapper { //所有的CRUD操作都已经编写完成了 }