基于Angularjs+mybatis实现二级评论系统(仿简书)
发布于 2017-06-16 12:05:04 | 146 次阅读 | 评论: 0 | 来源: 网友投递
这里有新鲜出炉的AngularJS开发指南，程序狗速度看过来！
AngularJS 前端JS框架
AngularJS诞生于Google是一款优秀的前端JS框架，已经被用于Google的多款产品当中。AngularJS有着诸多特性，最为核心的是：MVC、模块化、自动化双向数据绑定、语义化标签、依赖注入，等等。
这篇文章主要为大家详细介绍了基于Angularjs+mybatis实现二级评论系统，模仿简书效果制作，具有一定的参考价值，感兴趣的小伙伴们可以参考一下
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)
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >
<mapper namespace="personal.timeless.cms.mapper.SayingMapper" >
<resultMap id="SayingMap" type="saying" >
<id column="saying_id" property="id" jdbcType="INTEGER" />
<result column="sayingContent" property="sayingContent" jdbcType="INTEGER" />
<result column="author" property="author" jdbcType="VARCHAR" />
<result column="sayingAvatar" property="avatar" jdbcType="VARCHAR" />
<result column="likes" property="likes" jdbcType="VARCHAR" />
<result column="createTime" property="createTime" jdbcType="TIMESTAMP" />
<collection property="flcs" ofType="firstLevelComment" column="sayingId">
<id column="flc_id" property="id" jdbcType="INTEGER" />
<result column="sayingId" property="sayingId" jdbcType="INTEGER" />
<result column="commenter" property="commenter"/>
<result column="commenterAvatar" property="avatar"/>
<result column="commentContent" property="commentContent"/>
<result column="commentTime" property="commentTime" jdbcType="TIMESTAMP" />
<collection property="slcs" ofType="secondLevelComment" column="flcId">
<id column="slc_id" property="id" jdbcType="INTEGER" />
<result column="flcId" property="flcId" jdbcType="INTEGER" />
<result column="replier" property="replier"/>
<result column="toCommenter" property="toCommenter"/>
<result column="replyContent" property="replyContent"/>
<result column="replyTime" property="replyTime" jdbcType="TIMESTAMP" />
</collection>
</collection>
</resultMap>
<select id="selectOneById" resultMap="SayingMap" parameterType="int" >
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
</select>
<select id="updateLikesById">
update saying set likes = #{likes} where saying_id = #{id}
</select>
</mapper> 页面展示
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持phperz。
推荐阅读
最新资讯