fix: msg不允许为空

wl

2022-12-23 b680856aa7a5c7225fae1ea81f2706f10437f373

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package com.example.jz.dao;
 
import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import com.example.jz.modle.entity.Announcement;
import org.apache.ibatis.annotations.Mapper;
 
import java.util.List;
 
/**
 * 公告表(Announcement)表数据库访问层
 *
 * @author makejava
 * @since 2022-07-11 16:35:52
 */
@Mapper
public interface AnnouncementDao extends BaseMapper<Announcement> {
 
}