基于Angularjs+mybatis实现二级评论系统(仿简书)

一直想写个评论系统，看了下多说，网易,简书的评论，想了下自己该实现怎样的评论系统。

评论系统关键是嵌套层数以及数据库表设计。嵌套层数多，表结构复杂，呈现也麻烦，最后决定实现一个二级评论。系统由maven构建，springboot快速搭建spring环境。前台采用angularjs+bootstrap,后台使用springmvc+mybatis,数据库采用MySQL.前台请求后台API操作评论。

目录结构

数据库表设计

##说说表或者文章表 
create table saying ( 
 saying_id INT NOT NULL AUTO_INCREMENT PRIMARY KEY, 
 sayingContent VARCHAR(500) NOT NULL, 
 author VARCHAR(50) NOT NULL, 
 sayingAvatar VARCHAR(50) NOT NULL, 
 likes VARCHAR(500) NOT NULL, 
 createTime datetime NOT NULL 
) ENGINE=InnoDB DEFAULT CHARSET=utf8; 
 
##一级评论表 
create table firstLevelComment ( 
 flc_id INT NOT NULL AUTO_INCREMENT PRIMARY KEY, 
 sayingId INT NOT NULL, 
 commenter VARCHAR(50) NOT NULL, 
 commenterAvatar VARCHAR(50) NOT NULL, 
 commentContent VARCHAR(500) NOT NULL, 
 commentTime datetime NOT NULL 
) ENGINE=InnoDB DEFAULT CHARSET=utf8; 
 
##二级评论表 
create table secondLevelComment ( 
 slc_id INT NOT NULL AUTO_INCREMENT PRIMARY KEY, 
 sayingId INT NOT NULL, 
 flcId INT NOT NULL, 
 replier VARCHAR(50) NOT NULL, 
 toCommenter VARCHAR(50) NOT NULL, 
 replyContent VARCHAR(50) NOT NULL, 
 replyTime datetime NOT NULL 
) ENGINE=InnoDB DEFAULT CHARSET=utf8; 

获取评论的mapper(关键)

 
 
 
 
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
   
   
   
   
   
   
  
  
  
 
  
 select * from 
 (select * from saying s left join firstLevelComment fc on s.saying_id=fc.sayingId where s.saying_id=#{id}) tmp left join secondLevelComment sc 
 on tmp.flc_id = sc.flcId 
  
 
  
 update saying set likes = #{likes} where saying_id = #{id} 
  
  

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