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README
Apache-2.0

school-后端

介绍

这是我和我的三个小伙伴一起做的一个项目校园社交平台的后端代码,

校园社交平台是一个可以发表问题回答问题对回答进行评论,对每个回答、每个问题、每个评论都精确到用户的个人信息的社区,

通过每一个设定的入口链接到每个用户的个人信息页面,可对每个用户的回答问题情况、发表问题情况进行查看,

对每个用户进行一对一的即时聊天,实现社区模式+聊天应用模式的完美结合。

spring cloud 版本连接: https://gitee.com/clsld/school-springcloud

小程序端页码连接:https://gitee.com/clsld/school/

软件架构

后端使用SpringBoot框架作为开发的基础,将整个软件架构分为chat和communicaty两个模块,即聊天模块和社区模块。

笼统的来讲:chat模块主要负责对图片文件的上传和即时聊天功能、communicaty模块主要负责社区中用户、问题、回答、评论的增删改查

功能实现方式

即时聊天

首先我先大致讲一下我这个聊天系统的实现机制,首先这个项目是考虑与前端的微信小程序相连接的,那么我就使用了微信小程序的openid作为唯一id,

当微信小程序对我的后端程序发起websocket请求时顺便将该小程序使用者的openid发送过来,而我后端监听到有连接请求事件的话,

就将此openid作为key,websocket会话作为values存入currenthashmap中,并且一直保存连接。

如果有微信小程序用户想要发送信息给其他用户时,会将自己和对方的openid以及信息发送给后端,后端判断map中对方的openid在不在,如果存在的话,

就get(openid)获得此用户的websocket session会话,并调用服务端对客户端的发送信息函数进行信息的传递;如果此用户的openid不存在,即说明此用户,

没有连接websocket请求也就说不在线,那么我就把信息存储到redis中,等该用户上线时再将消息取出发送给该用户。

然后下面是快速实现websocket聊天的事例,如果对我实现的聊天机制有兴趣,

请下载我的代码查看,如果对你有用请毫不吝啬的star。

使用springboot+websocket+redis的方式实现即时聊天,首先需要导入springboot整合redis的依赖

 <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-websocket</artifactId>
        <version>2.4.2</version>
    </dependency>

然后新建WebSocketConfig开启消息推送

@Configuration
public class WebSocketConfig {
    @Bean
    public ServerEndpointExporter serverEndpointExporter(){
        return new ServerEndpointExporter();
    }
}

新建WebSocketServer类对请求过来的websocket请求进行处理

路径映射

方法映射

评论的多级转换

参与贡献

陈霖 https://gitee.com/clsld

钟科杰 https://gitee.com/zkj_123

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简介

社交平台小程序的后端,实现了即时聊天IM系统等功能 展开 收起
Java 等 2 种语言
Apache-2.0
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