实现点击用户头像或者id与其用户进行聊天（vue+springboot+WebSocket）

用户点击id直接与另一位用户聊天

前端如此：

<template><!-- 消息盒子 --><div class="content-box" :style="contentWidth"><!-- 头像，用户名 --><div class="content-box-top box--flex"><el-avatarclass="content-box-avatar"shape="circle":size="50":src="handleCampusUrl(contentObj.params.avatar)"></el-avatar><divclass="box--flex"style="height: 100%; justify-content: center; flex-direction: column"><div class="box--flex" style="margin-bottom: 7px; font-weight: bolder"><span class="nickName" @click="handleClickNickName">{{ contentObj.params.nickName }}</span></div><div class="box--flex"><div class="content-category-tag"><div>{{ contentObj.params.categoryName }}</div></div><span class="content-box-time">{{ parseTime(contentObj.createTime, "{y}-{m}-{d} {h}:{i}") }}</span></div></div></div><!-- 内容 --><divclass="content-feed-content"style="padding-left: 60px; margin: 0px 10px 0 0"><div class="content-feed-ogText"><!-- 文字 --><div style="white-space: pre-wrap">{{ contentObj.content }}</div></div><!-- 信息墙的图片/视频 --><div style="margin-top: 10px"><ContentFilev-if="contentObj.type != 0":fileUrls="contentObj.fileUrl":contentType="contentObj.type"></ContentFile></div></div><!-- 信息墙底部 --><ContentBottom:zanBoolean="zanBoolean":contentObj="contentObj"></ContentBottom></div>
</template><script>
//组件
import ContentBottom from "@/components/ContentBottom";
import ContentFile from "@/components/ContentFile";import { getToken, setToken, removeToken } from "@/utils/auth";export default {name: "Content",props: ["contentObj", "loveContentIds"],//import引入的组件需要注入到对象中才能使用components: { ContentBottom, ContentFile },data() {//这里存放数据return {//是否点赞zanBoolean: false,contentWidth: "width:605px;",};},//生命周期 - 创建完成（可以访问当前this实例）created() {let width = document.documentElement.clientWidth;if (width < 642) {this.contentWidth = "";}this.isZan(this.contentObj.contentId);},watch: {contentObj: {handler(newVal, oldVal) {// console.log(newVal);this.isZan(newVal.contentId);},deep: true,immediate: true,},},//生命周期 - 挂载完成（可以访问DOM元素）mounted() {},//方法集合methods: {//判断是否被点赞isZan(contentId) {if (this.loveContentIds.indexOf(contentId) == -1) {this.zanBoolean = false;} else {this.zanBoolean = true;}},handleClickNickName() {// 输出nickName到控制台console.log("输出的用户名=",this.contentObj.params.nickName);// 路由跳转，并传递参数this.$router.push({ name: 'chat', params: { nickName: this.contentObj.params.nickName } });},},
};
</script>
<style>
.content-box {/* box-shadow: 0 10px 12px 0 rgba(0, 0, 0, 0.2); */margin: 0 0 20px 0;padding: 20px 20px 0;background-color: #fff;box-shadow: 0px 0px 25px rgb(0 0 0 / 10%);border: 1px solid rgba(255, 255, 255, 0.5);border-right: 1px solid rgba(255, 255, 255, 0.2);border-bottom: 1px solid rgba(255, 255, 255, 0.2);border-radius: 10px;
}
.box--flex {display: flex;
}
.content-box-top {height: 50px;
}
.content-feed-ogText {color: #333;font-size: 14px;line-height: 24px;
}
.content-footer {height: 40px;line-height: 40px;margin: 0 15px;
}
.nickName {font-size: 15px;font-weight: bold;
}
.content-box-time {font-size: 12px;color: darkgrey;
}
.content-category-tag {margin-right: 4px;font-size: 12px;display: inline-block;min-width: 26px;height: 13px;border: 1px solid #ccc;border-radius: 2px;line-height: 13px;color: #939393;text-align: center;
}.content-box-avatar {margin-right: 10px;
}
</style>

<template><div style="padding: 10px; margin-bottom: 50px"><el-row><el-col :span="20"><div style="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;">聊天--{{ chatUser }}</div><div style="height: 350px; overflow:auto; border-top: 1px solid #ccc" v-html="content"></div><div style="height: 200px"><textarea v-model="text" style="height: 160px; width: 100%; padding: 20px; border: none; border-top: 1px solid #ccc;border-bottom: 1px solid #ccc; outline: none"></textarea><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;
import userInfoApi from "@/api/userInfo";
export default {name: "Im",data() {return {circleUrl: 'https://cube.elemecdn.com/3/7c/3ea6beec64369c2642b92c6726f1epng.png',user: {},isCollapse: false,users: [],chatUser: '',text: "",messages: [],content: ''}},created() {//另一个页面传过来的 对话人 this.chatUser = this.$route.params.nickName;console.log("传入的this.chatUser=",this.chatUser)this.init(); // 初始化 WebSocket 连接// this.chatUser = 'ruan';this.text = ''; // 清空输入框内容this.send(); // 发送消息给张三},methods: {getUser() {userInfoApi.getUserProfile().then((response) => {console.log("response========",response)this.user = {"username": response.data.userName};});},send() {if (!this.chatUser) {this.$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"}let 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.getUser();console.log("拿到的user=",this.user)let username = this.user.username;// this.user = {"username": "张三"}userInfoApi.getUserProfile().then((response) => {console.log("response========",response)username =  response.data.userName;console.log("this.user.username===",this.user.username)let _this = this;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");let socketUrl = "ws://localhost:8160/imserver/" + username;if (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)let 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"}]}// console.log(data)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// console.log(_this.users)} else {if (data.from === _this.chatUser) {_this.messages.push(data)_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>

前端完毕，然后后端：

maven

   <dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-websocket</artifactId><version>2.1.3.RELEASE</version></dependency>

然后是

配置

package com.oddfar.campus.business.config;import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.socket.server.standard.ServerEndpointExporter;@Configuration
public class WebSocketClientConfig {/*** ServerEndpointExporter 作用** 这个Bean会自动注册使用@ServerEndpoint注解声明的websocket endpoint** @return*/@Beanpublic ServerEndpointExporter serverEndpointExporter() {return new ServerEndpointExporter();}}

主代码

package com.oddfar.campus.business.service;import org.springframework.stereotype.Component;import javax.websocket.server.ServerEndpoint;
import cn.hutool.json.JSONArray;
import cn.hutool.json.JSONObject;
import cn.hutool.json.JSONUtil;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;import javax.websocket.*;
import javax.websocket.server.PathParam;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;@ServerEndpoint(value = "/imserver/{username}")
@Component
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);array.add(jsonObject);}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);String toUsername = obj.getStr("to");String text = obj.getStr("text");Session toSession = sessionMap.get(toUsername);if (toSession != null) {JSONObject jsonObject = new JSONObject();jsonObject.set("from", username);jsonObject.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);}}
}

还有，如果你的websocket的ws请求被security拦截了，要配置下，避开websocket请求

package com.oddfar.campus.framework.config;import com.oddfar.campus.framework.security.filter.JwtAuthenticationTokenFilter;
import com.oddfar.campus.framework.security.handle.AuthenticationEntryPointImpl;
import com.oddfar.campus.framework.security.handle.LogoutSuccessHandlerImpl;
import com.oddfar.campus.framework.security.properties.PermitAllUrlProperties;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.http.HttpMethod;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
import org.springframework.security.config.annotation.method.configuration.EnableGlobalMethodSecurity;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.builders.WebSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.config.annotation.web.configurers.ExpressionUrlAuthorizationConfigurer;
import org.springframework.security.config.http.SessionCreationPolicy;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;
import org.springframework.security.web.authentication.logout.LogoutFilter;
import org.springframework.web.filter.CorsFilter;/*** spring security配置** @author ruoyi*/
@EnableGlobalMethodSecurity(prePostEnabled = true, securedEnabled = true)
@EnableWebSecurity//这个注解不能缺
public class SecurityConfig extends WebSecurityConfigurerAdapter {/*** 自定义用户认证逻辑*/@Autowiredprivate UserDetailsService userDetailsService;/*** 认证失败处理类*/@Autowiredprivate AuthenticationEntryPointImpl unauthorizedHandler;/*** 退出处理类*/@Autowiredprivate LogoutSuccessHandlerImpl logoutSuccessHandler;/*** token认证过滤器*/@Autowiredprivate JwtAuthenticationTokenFilter authenticationTokenFilter;/*** 跨域过滤器*/@Autowiredprivate CorsFilter corsFilter;/*** 允许匿名访问的地址*/@Autowiredprivate PermitAllUrlProperties permitAllUrl;/*** 解决 无法直接注入 AuthenticationManager** @return* @throws Exception*/@Bean@Overridepublic AuthenticationManager authenticationManagerBean() throws Exception {return super.authenticationManagerBean();}/*** anyRequest          |   匹配所有请求路径* access              |   SpringEl表达式结果为true时可以访问* anonymous           |   匿名可以访问* denyAll             |   用户不能访问* fullyAuthenticated  |   用户完全认证可以访问（非remember-me下自动登录）* hasAnyAuthority     |   如果有参数，参数表示权限，则其中任何一个权限可以访问* hasAnyRole          |   如果有参数，参数表示角色，则其中任何一个角色可以访问* hasAuthority        |   如果有参数，参数表示权限，则其权限可以访问* hasIpAddress        |   如果有参数，参数表示IP地址，如果用户IP和参数匹配，则可以访问* hasRole             |   如果有参数，参数表示角色，则其角色可以访问* permitAll           |   用户可以任意访问* rememberMe          |   允许通过remember-me登录的用户访问* authenticated       |   用户登录后可访问*/@Overrideprotected void configure(HttpSecurity httpSecurity) throws Exception {// 注解标记允许匿名访问的urlExpressionUrlAuthorizationConfigurer<HttpSecurity>.ExpressionInterceptUrlRegistry registry = httpSecurity.authorizeRequests();permitAllUrl.getUrls().forEach(url -> registry.antMatchers(url).permitAll());httpSecurity// CSRF禁用，因为不使用session.csrf().disable()// 认证失败处理类.exceptionHandling().authenticationEntryPoint(unauthorizedHandler).and()// 基于token，所以不需要session.sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS).and()// 过滤请求.authorizeRequests()// 对于登录login 注册register 验证码captchaImage 允许匿名访问.antMatchers("/login", "/register", "/captchaImage").anonymous()// 静态资源，可匿名访问.antMatchers(HttpMethod.GET, "/", "/*.html", "/**/*.html", "/**/*.css", "/**/*.js", "/profile/**").permitAll().antMatchers("/swagger-ui.html", "/swagger-resources/**", "/webjars/**", "/*/api-docs", "/druid/**").permitAll()// 除上面外的所有请求全部需要鉴权认证.anyRequest().authenticated().and().headers().frameOptions().disable();// 添加Logout filterhttpSecurity.logout().logoutUrl("/logout").logoutSuccessHandler(logoutSuccessHandler);// 添加JWT filterhttpSecurity.addFilterBefore(authenticationTokenFilter, UsernamePasswordAuthenticationFilter.class);// 添加CORS filterhttpSecurity.addFilterBefore(corsFilter, JwtAuthenticationTokenFilter.class);httpSecurity.addFilterBefore(corsFilter, LogoutFilter.class);}/*** 强散列哈希加密实现*/@Beanpublic BCryptPasswordEncoder bCryptPasswordEncoder() {return new BCryptPasswordEncoder();}/*** 身份认证接口*/@Overrideprotected void configure(AuthenticationManagerBuilder auth) throws Exception {auth.userDetailsService(userDetailsService).passwordEncoder(bCryptPasswordEncoder());}//忽略websocket拦截@Overridepublic void configure(WebSecurity webSecurity){webSecurity.ignoring().antMatchers("/**");}
}