代码整理，及应用MybatisPlus，使得可不用mapper.xml配置文件进行查询demo实现

liurunyu

2023-11-08 30bcaac63cafe8ed46a7ab09eac6b90fa7aea1d5

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package com.dy.pipIrrGlobal.daoDemo;
 
import com.dy.pipIrrGlobal.pojoDemo.DemoTest;
import org.apache.ibatis.annotations.Mapper;
 
@Mapper
public interface DemoTestMapper {
    public Integer queryCount() ;
}