电商商城之使用通用Mapper

https://blog.csdn.net/dwf_android/article/details/79359360?depth_1-utm_source=distribute.pc_relevant.none-task-blog-BlogCommendFromBaidu-1&utm_source=distribute.pc_relevant.none-task-blog-BlogCommendFromBaidu-1

第一步：在application.yml添加通用mapper配置

############################################################
#
#   mybatis 配置 通用mapper
#
############################################################
mapper:
  mappers: com.ljl.my.mapper.MyMapper
  not-empty: false  # 在进行数据库的操作
  identity: MYSQL

第二步：书写MyMapper接口：

import tk.mybatis.mapper.common.Mapper;
import tk.mybatis.mapper.common.MySqlMapper;

/**
 * 继承自己的MyMapper
 */
public interface MyMapper extends Mapper, MySqlMapper {
}

 

第三步：书写UsersMapper接口继承MyMapper接口：

package com.ljl.mapper;



import com.ljl.my.mapper.MyMapper;
import com.ljl.pojo.Users;

public interface UsersMapper extends MyMapper {
}