SpringBoot集成WebSocket实现及时通讯聊天功能!!!

3：加入WebSocketServer.java

package com.shijiu.component;
import cn.hutool.json.JSONArray;
import cn.hutool.json.JSONObject;
import cn.hutool.json.JSONUtil;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Component;import javax.websocket.*;
import javax.websocket.server.PathParam;
import javax.websocket.server.ServerEndpoint;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
/* @Author * @Date Created in  2023/4/18 9:31* @DESCRIPTION:websocket服务* @Version V1.0*/@ServerEndpoint(value = "/imserver/{username}")
@Component //注册为SpringBoot 的一个Bean
public class WebSocketServer {private static final Logger log = LoggerFactory.getLogger(WebSocketServer.class);/* 记录当前在线连接数*/public static final Map<String, Session> sessionMap = new ConcurrentHashMap<>();/* 连接建立成功调用的方法*/@OnOpenpublic void onOpen(Session session, @PathParam("username") String username) {sessionMap.put(username, session);log.info("有新用户加入，username={}, 当前在线人数为：{}", username, sessionMap.size());JSONObject result = new JSONObject();JSONArray array = new JSONArray();result.set("users", array);for (Object key : sessionMap.keySet()) {JSONObject jsonObject = new JSONObject();jsonObject.set("username", key);// {"username", "zhang", "username": "admin"}array.add(jsonObject);}
//        {"users": [{"username": "zhang"},{ "username": "admin"}]}// 后台发送消息给所有的客户端sendAllMessage(JSONUtil.toJsonStr(result));}/* 连接关闭调用的方法*/@OnClosepublic void onClose(Session session, @PathParam("username") String username) {sessionMap.remove(username);log.info("有一连接关闭，移除username={}的用户session, 当前在线人数为：{}", username, sessionMap.size());}/* 收到客户端消息后调用的方法* 后台收到客户端发送过来的消息* onMessage 是一个消息的中转站* 接受 浏览器端 socket.send 发送过来的 json数据* @param message 客户端发送过来的消息*/@OnMessagepublic void onMessage(String message, Session session, @PathParam("username") String username) {log.info("服务端收到用户username={}的消息:{}", username, message);JSONObject obj = JSONUtil.parseObj(message);// to表示发送给哪个用户，比如 adminString toUsername = obj.getStr("to");// 发送的消息文本  helloString text = obj.getStr("text");// {"to": "admin", "text": "聊天文本"}Session toSession = sessionMap.get(toUsername);// 根据 to用户名来获取 session，再通过session发送消息文本if (toSession != null) {// 服务器端 再把消息组装一下，组装后的消息包含发送人和发送的文本内容// {"from": "zhang", "text": "hello"}JSONObject jsonObject = new JSONObject();// from 是 zhangjsonObject.set("from", username);// text 同上面的textjsonObject.set("text", text);this.sendMessage(jsonObject.toString(), toSession);log.info("发送给用户username={}，消息：{}", toUsername, jsonObject.toString());} else {log.info("发送失败，未找到用户username={}的session", toUsername);}}@OnErrorpublic void onError(Session session, Throwable error) {log.error("发生错误");error.printStackTrace();}/* 服务端发送消息给客户端*/private void sendMessage(String message, Session toSession) {try {log.info("服务端给客户端[{}]发送消息{}", toSession.getId(), message);toSession.getBasicRemote().sendText(message);} catch (Exception e) {log.error("服务端发送消息给客户端失败", e);}}/* 服务端发送消息给所有客户端*/private void sendAllMessage(String message) {try {for (Session session : sessionMap.values()) {log.info("服务端给客户端[{}]发送消息{}", session.getId(), message);session.getBasicRemote().sendText(message);}} catch (Exception e) {log.error("服务端发送消息给客户端失败", e);}}
}

注意：

4：设置WebConfig.java，放开拦截

registry.addInterceptor(authInterceptor()).addPathPatterns("/").excludePathPatterns("/user/login", "/user/register", "/imserver/", "/files/", "/alipay/","/doc.html", "/webjars/", "/swagger-resources/");

至此，后端代码就集成完了，集成完之后，记得重启你的Springboot项目

前端Vue

1：新建Vue 页面

<template><div style="padding: 10px; margin-bottom: 50px"><el-row><el-col :span="8"><el-card style="width: 100%; min-height: 300px; color: #333"><div style="padding-bottom: 10px; border-bottom: 1px solid #ccc">在线用户<span style="font-size: 12px">（点击聊天气泡开始聊天）</span></div><div v-for="user in users" :key="user.username" style="padding: 10px 0"><span>{{ user.username }}</span><iclass="el-icon-chat-dot-round"style="margin-left: 10px; font-size: 16px; cursor: pointer"@click="chatUser = user.username"/><span v-if="user.username === chatUser" style="font-size: 12px;color: limegreen; margin-left: 5px">chatting...</span></div></el-card></el-col><el-col :span="16"><divstyle="width: 800px; margin: 0 auto; background-color: white;border-radius: 5px; box-shadow: 0 0 10px #ccc"><div style="text-align: center; line-height: 50px;">Web聊天室（{{ chatUser }}）</div><div style="height: 350px; overflow:auto; border-top: 1px solid #ccc" v-html="content" /><div style="height: 200px"><textareav-model="text"style="height: 160px; width: 100%; padding: 20px; border: none; border-top: 1px solid #ccc;border-bottom: 1px solid #ccc; outline: none"/><div style="text-align: right; padding-right: 10px"><el-button type="primary" size="mini" @click="send">发送</el-button></div></div></div></el-col></el-row></div>
</template>
<script>
import request from '@/utils/request'
let socket
export default {name: 'Im',data() {return {circleUrl: 'https://cube.elemecdn.com/3/7c/3ea6beec64369c2642b92c6726f1epng.png',user: {},isCollapse: false,users: [],chatUser: '',text: '',messages: [],content: ''}},created() {this.init()},methods: {send() {if (!this.chatUser) {this.$message({ type: 'warning', message: '请选择聊天对象' })return}if (!this.text) {this.$message({ type: 'warning', message: '请输入内容' })} else {if (typeof (WebSocket) === 'undefined') {console.log('您的浏览器不支持WebSocket')} else {console.log('您的浏览器支持WebSocket')// 组装待发送的消息 json// {"from": "zhang", "to": "admin", "text": "聊天文本"}const message = { from: this.user.username, to: this.chatUser, text: this.text }socket.send(JSON.stringify(message)) // 将组装好的json发送给服务端，由服务端进行转发this.messages.push({ user: this.user.username, text: this.text })// 构建消息内容，本人消息this.createContent(null, this.user.username, this.text)this.text = ''}}},createContent(remoteUser, nowUser, text) { // 这个方法是用来将 json的聊天消息数据转换成 html的。let html// 当前用户消息if (nowUser) { // nowUser 表示是否显示当前用户发送的聊天消息，绿色气泡html = '<div class="el-row" style="padding: 5px 0">\\n' +'  <div class="el-col el-col-22" style="text-align: right; padding-right: 10px">\\n' +'    <div class="tip left">' + text + '</div>\\n' +'  </div>\\n' +'  <div class="el-col el-col-2">\\n' +'  <span class="el-avatar el-avatar--circle" style="height: 40px; width: 40px; line-height: 40px;">\\n' +'    <img src="https://cube.elemecdn.com/3/7c/3ea6beec64369c2642b92c6726f1epng.png" style="object-fit: cover;">\\n' +'  </span>\\n' +'  </div>\\n' +'</div>'} else if (remoteUser) { // remoteUser表示远程用户聊天消息，蓝色的气泡html = '<div class="el-row" style="padding: 5px 0">\\n' +'  <div class="el-col el-col-2" style="text-align: right">\\n' +'  <span class="el-avatar el-avatar--circle" style="height: 40px; width: 40px; line-height: 40px;">\\n' +'    <img src="https://cube.elemecdn.com/3/7c/3ea6beec64369c2642b92c6726f1epng.png" style="object-fit: cover;">\\n' +'  </span>\\n' +'  </div>\\n' +'  <div class="el-col el-col-22" style="text-align: left; padding-left: 10px">\\n' +'    <div class="tip right">' + text + '</div>\\n' +'  </div>\\n' +'</div>'}console.log(html)this.content += html},init() {this.user = localStorage.getItem('user') ? JSON.parse(localStorage.getItem('user')) : {}const username = this.user.usernameconst _this = thisif (typeof (WebSocket) === 'undefined') {console.log('您的浏览器不支持WebSocket')} else {console.log('您的浏览器支持WebSocket')const socketUrl = 'ws://localhost:9090/imserver/' + usernameif (socket != null) {socket.close()socket = null}// 开启一个websocket服务socket = new WebSocket(socketUrl)// 打开事件socket.onopen = function() {console.log('websocket已打开')}//  浏览器端收消息，获得从服务端发送过来的文本消息socket.onmessage = function(msg) {console.log('收到数据====' + msg.data)const data = JSON.parse(msg.data) // 对收到的json数据进行解析， 类似这样的： {"users": [{"username": "zhang"},{ "username": "admin"}]}if (data.users) { // 获取在线人员信息_this.users = data.users.filter(user => user.username !== username) // 获取当前连接的所有用户信息，并且排除自身，自己不会出现在自己的聊天列表里} else {// 如果服务器端发送过来的json数据 不包含 users 这个key，那么发送过来的就是聊天文本json数据//  // {"from": "zhang", "text": "hello"}if (data.from === _this.chatUser) {_this.messages.push(data)// 构建消息内容_this.createContent(data.from, null, data.text)}}}// 关闭事件socket.onclose = function() {console.log('websocket已关闭')}// 发生了错误事件socket.onerror = function() {console.log('websocket发生了错误')}}}}
}
</script>
<style>
.tip {color: white;text-align: center;border-radius: 10px;font-family: sans-serif;padding: 10px;width:auto;display:inline-block !important;display:inline;
}
.right {background-color: deepskyblue;
}
.left {background-color: forestgreen;
}
</style>

 路由：

代码：路由根据你项目的实际情况写

在用户登录的时候，需要将你的用户名存储到本地Session 中

 localStorage.setItem('user', this.loginForm.username)

  {path: '/liaotian/webscoketServer/lm',name: 'lm',component: Layout,children: [{path: 'lm',name: 'lm',component: () => import('@/views/liaotian/webscoketServer/lm.vue'),meta: { title: '聊天管理', icon: 'el-icon-chat-dot-round' }}]},

 效果图：

 用户甲：

用户乙：

注：网上学习来源

SpringBoot集成WebSocket实现网页聊天（录播）_哔哩哔哩_bilibili直播讲解Springboot集成Websocket实现网页聊天室，前端是Vue。笔记：https://docs.qq.com/doc/DUVp0ZHFVVWtwY2FX, 视频播放量 44603、弹幕量 251、点赞数 912、投硬币枚数 790、收藏人数 2593、转发人数 160, 视频作者 程序员青戈, 作者简介 毕设私聊Q：1938976892，相关视频：【黑马程序员】WebSocket打造在线聊天室【配套资料+源码】，SpringBoot+Vue集成网页版在线聊天（极简版），SpringBoot集成WebSocke在线客服聊天系统，谷歌程序员，被问SpringBoot时的反应，让我笑了三天 | 搞笑采访，刷题经验分享，【毕业设计】网页在线聊天系统演示分享，SpringBoot+Mybatis+netty 打造高性能前后端分离的聊天应用混合式APP，10天写了个垃圾毕设，springboot+vue，B站最通俗易懂手把手SpringBoot+Vue项目实战-前后端分离博客项目-Java项目，8分钟学完springboot+vue前后分离的增删改查，Web前端-3小时教你打造一个聊天室（websocket）https://www.bilibili.com/video/BV12Q4y1q7VP/?spm_id_from=333.337.search-card.all.click&vd_source=419fe38ebae639bb2494d02c5fe95313