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使用WebSocket+SpringBoot+Vue搭建簡易網(wǎng)頁聊天室的實現(xiàn)代碼

 更新時間：2023年03月21日 16:29:00   作者：WSKH0929  
這篇文章主要介紹了使用WebSocket+SpringBoot+Vue搭建簡易網(wǎng)頁聊天室的實現(xiàn),具體的步驟如下,需要的朋友可以參考下

一、數(shù)據(jù)庫搭建

很簡單的一個user表，加兩個用戶admin和wskh

image-20220125134925596

二、后端搭建

2.1 引入關(guān)鍵依賴

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

2.2 WebSocket配置類

WebSocketConfig的作用是：開啟WebSocket監(jiān)聽

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.socket.server.standard.ServerEndpointExporter;

/** 
* @Author：WSKH 
* @ClassName：WebSocketConfig 
* @ClassType：配置類 
* @Description：WebSocket配置類 
* @Date：2022/1/25/12:21 
* @Email：1187560563@qq.com 
* @Blog：https://blog.csdn.net/weixin_51545953?type=blog 
*/

@Configuration
public class WebSocketConfig {
    /** * 開啟webSocket * @return */ 
    @Bean 
    public ServerEndpointExporter serverEndpointExporter() {
        return new ServerEndpointExporter(); 
    }
}

WebSocketServer里寫了一些事件，如發(fā)送消息事件，建立連接事件，關(guān)閉連接事件等

import com.wskh.chatroom.util.FastJsonUtils;
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.io.EOFException;
import java.io.IOException;
import java.util.concurrent.ConcurrentHashMap;

@ServerEndpoint("/websocket/{sid}")
@Component
public class WebSocketServer {
    private static final Logger log = LoggerFactory.getLogger(WebSocketServer.class);

    private static int onlineCount = 0;

    private static ConcurrentHashMap<String,WebSocketServer> webSocketServerMap = new ConcurrentHashMap<>();

    private Session session;

    private String sid;


    @OnOpen
    public void onOpen(Session session, @PathParam("sid") String sid) {
        this.sid = sid;
        this.session = session;
        webSocketServerMap.put(sid, this);
        addOnlineCount();
        log.info("有新窗口開始監(jiān)聽:"+sid+",當前在線人數(shù)為" + getOnlineCount());
        try {
            sendInfo("openSuccess:"+webSocketServerMap.keySet());
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    @OnClose
    public void onClose() {
        webSocketServerMap.remove(sid);
        subOnlineCount();
        log.info("有一連接關(guān)閉！當前在線人數(shù)為" + getOnlineCount());
        try {
            sendInfo("openSuccess:"+webSocketServerMap.keySet());
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    @OnMessage
    public void onMessage(String message) throws IOException {
        if("ping".equals(message)) {
            sendInfo(sid, "pong");
        }
        if(message.contains(":")) {
            String[] split = message.split(":");
            sendInfo(split[0], "receivedMessage:"+sid+":"+split[1]);
        }
    }

    @OnError
    public void onError(Session session, Throwable error) {
        if(error instanceof EOFException) {
            return;
        }
        if(error instanceof IOException && error.getMessage().contains("已建立的連接")) {
            return;
        }
        log.error("發(fā)生錯誤", error);
    }

    /**
     * 實現(xiàn)服務器主動推送
     */
    public void sendMessage(String message) throws IOException {
        synchronized (session) {
            this.session.getBasicRemote().sendText(message);
        }
    }

    public static void sendObject(Object obj) throws IOException {
        sendInfo(FastJsonUtils.convertObjectToJSON(obj));
    }

    public static void sendInfo(String sid,String message) throws IOException {
        WebSocketServer socketServer = webSocketServerMap.get(sid);
        if(socketServer != null) {
            socketServer.sendMessage(message);
        }
    }

    public static void sendInfo(String message) throws IOException {
        for(String sid : webSocketServerMap.keySet()) {
            webSocketServerMap.get(sid).sendMessage(message);
        }
    }

    public static void sendInfoByUserId(Long userId,Object message) throws IOException {
        for(String sid : webSocketServerMap.keySet()) {
            String[] sids =  sid.split("id");
            if(sids.length == 2) {
                String id = sids[1];
                if(userId.equals(Long.parseLong(id))) {
                    webSocketServerMap.get(sid).sendMessage(FastJsonUtils.convertObjectToJSON(message));
                }
            }
        }
    }

    public static Session getWebSocketSession(String sid) {
        if(webSocketServerMap.containsKey(sid)) {
            return webSocketServerMap.get(sid).session;
        }
        return null;
    }

    public static synchronized void addOnlineCount() {
        onlineCount++;
    }

    public static synchronized void subOnlineCount() {
        onlineCount--;
    }

    public static synchronized int getOnlineCount() {
        return onlineCount;
    }
}

2.3 配置跨域

import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.CorsRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;

@Configuration
public class WebMvcConfig extends WebMvcConfigurerAdapter {

    @Override
    // 跨域配置
    public void addCorsMappings(CorsRegistry registry) {
        registry.addMapping("/**")
                .allowedOrigins("*")
                .allowedMethods("POST", "GET", "PUT", "OPTIONS", "DELETE")
                .maxAge(3600)
                .allowCredentials(true);
    }

}

2.4 發(fā)送消息的控制類

/**
 * @Author：WSKH
 * @ClassName：MsgController
 * @ClassType：控制類
 * @Description：信息控制類
 * @Date：2022/1/25/12:47
 * @Email：1187560563@qq.com
 * @Blog：https://blog.csdn.net/weixin_51545953?type=blog
 */
@ApiModel("信息控制類")
@RestController
@RequestMapping("/chatroom/msg")
public class MsgController {
    @ApiOperation("發(fā)送信息方法")
    @PostMapping("/sendMsg")
    public R sendMsg(String msg) throws IOException {
        WebSocketServer.sendInfo(msg);
        return R.ok().message("發(fā)送成功");
    }
}

至此，后端部分大體配置完畢。

三、前端搭建

本文使用vue-admin-template-master模板進行聊天室的前端搭建

3.1 自定義文件websocket.js

將下面文件放在api文件夾下

image-20220125135840238

//websocket.js
import Vue from 'vue'

// 1、用于保存WebSocket 實例對象
export const WebSocketHandle = undefined

// 2、外部根據(jù)具體登錄地址實例化WebSocket 然后回傳保存WebSocket
export const WebsocketINI = function(websocketinstance) {
  this.WebSocketHandle = websocketinstance
  this.WebSocketHandle.onmessage = OnMessage
}

// 3、為實例化的WebSocket綁定消息接收事件：同時用于回調(diào)外部各個vue頁面綁定的消息事件
// 主要使用WebSocket.WebSocketOnMsgEvent_CallBack才能訪問  this.WebSocketOnMsgEvent_CallBack 無法訪問很詭異
const OnMessage = function(msg) {
  // 1、消息打印
  // console.log('收到消息：', msg)

  // 2、如果外部回調(diào)函數(shù)未綁定 結(jié)束操作
  if (!WebSocket.WebSocketOnMsgEvent_CallBack) {
    console.log(WebSocket.WebSocketOnMsgEvent_CallBack)
    return
  }

  // 3、調(diào)用外部函數(shù)
  WebSocket.WebSocketOnMsgEvent_CallBack(msg)
}

// 4、全局存放外部頁面綁定onmessage消息回調(diào)函數(shù):注意使用的是var
export const WebSocketOnMsgEvent_CallBack = undefined

// 5、外部通過此綁定方法 來傳入的onmessage消息回調(diào)函數(shù)
export const WebSocketBandMsgReceivedEvent = function(receiveevent) {
  WebSocket.WebSocketOnMsgEvent_CallBack = receiveevent
}

// 6、封裝一個直接發(fā)送消息的方法：
export const Send = function(msg) {
  if (!this.WebSocketHandle || this.WebSocketHandle.readyState !== 1) {
    // 未創(chuàng)建連接 或者連接斷開 無法發(fā)送消息
    return
  }
  this.WebSocketHandle.send(msg)// 發(fā)送消息
}

// 7、導出配置
const WebSocket = {
  WebSocketHandle,
  WebsocketINI,
  WebSocketBandMsgReceivedEvent,
  Send,
  WebSocketOnMsgEvent_CallBack
}

// 8、全局綁定WebSocket
Vue.prototype.$WebSocket = WebSocket

3.2 main.js中全局引入websocket

import '@/utils/websocket' // 全局引入 WebSocket 通訊組件

3.3 App.vue中聲明websocket對象

App.vue

<template>
  <div id="app">
    <router-view />
  </div>
</template>

<script>
  import {getInfo} from './api/login.js';
  import {getToken} from './utils/auth.js'
  export default {
    name: 'App',
    mounted() {
      // 每3秒檢測一次websocket連接狀態(tài) 未連接 則嘗試連接 盡量保證網(wǎng)站啟動的時候 WebSocket都能正常長連接
      setInterval(this.WebSocket_StatusCheck, 3000)
      // 綁定消息回調(diào)事件
      this.$WebSocket.WebSocketBandMsgReceivedEvent(this.WebSocket_OnMesage)
      // 初始化當前用戶信息
      this.token = getToken()
      getInfo(this.token).then((rep)=>{
        console.log(rep)
        this.userName = rep.data.name
      }).catch((error)=>{
        console.log(error)
      })
    },
    data(){
      return{

      }
    },
    methods: {

      // 實際消息回調(diào)事件
      WebSocket_OnMesage(msg) {
        console.log('收到服務器消息：', msg.data)
        console.log(msg)
        let chatDiv = document.getElementById("chatDiv")
        let newH3 = document.createElement("div")
        if(msg.data.indexOf('openSuccess')>=0){
			// 忽略連接成功消息提示
        }else{
          if(msg.data.indexOf(this.userName)==0){
            // 說明是自己發(fā)的消息，應該靠右邊懸浮
            newH3.innerHTML = "<div style='width:100%;text-align: right;'><h3 style=''>"+msg.data+"</h3></div>"
          }else{
            newH3.innerHTML = "<div style='width:100%;text-align: left;'><h3 style=''>"+msg.data+"</h3></div>"
          }
        }
        chatDiv.appendChild(newH3)
      },

      // 1、WebSocket連接狀態(tài)檢測：
      WebSocket_StatusCheck() {
        if (!this.$WebSocket.WebSocketHandle || this.$WebSocket.WebSocketHandle.readyState !== 1) {
          console.log('Websocket連接中斷，嘗試重新連接:')
          this.WebSocketINI()
        }
      },

      // 2、WebSocket初始化：
      async WebSocketINI() {
        // 1、瀏覽器是否支持WebSocket檢測
        if (!('WebSocket' in window)) {
          console.log('您的瀏覽器不支持WebSocket!')
          return
        }

        let DEFAULT_URL = "ws://" + '127.0.0.1:8002' + '/websocket/' + new Date().getTime()

        // 3、創(chuàng)建Websocket連接
        const tmpWebsocket = new WebSocket(DEFAULT_URL)

        // 4、全局保存WebSocket操作句柄：main.js 全局引用
        this.$WebSocket.WebsocketINI(tmpWebsocket)

        // 5、WebSocket連接成功提示
        tmpWebsocket.onopen = function(e) {
          console.log('webcoket連接成功')
        }

        //6、連接失敗提示
        tmpWebsocket.onclose = function(e) {
          console.log('webcoket連接關(guān)閉：', e)
        }
      }

    }
  }
</script>

3.4 聊天室界面.vue

<template>
  <div>
    <div style="margin-top: 1vh;margin-bottom: 1vh;font-weight: bold;">聊天內(nèi)容:</div>
    <div style="background-color: #c8c8c8;width: 100%;height: 80vh;" id="chatDiv">

    </div>
    <div style="margin-top: 1vh;margin-bottom: 1vh;font-weight: bold;">聊天輸入框:</div>
    <el-input v-model="text">

    </el-input>
    <el-button @click="sendMsg">點擊發(fā)送</el-button>
  </div>
</template>

<script>
  import {getInfo} from '../../api/login.js';
  import {getToken} from '../../utils/auth.js'
  import msgApi from '../../api/msg.js'
  export default {
    mounted() {
      //
      this.token = getToken()
      getInfo(this.token).then((rep)=>{
        console.log(rep)
        this.userName = rep.data.name
      }).catch((error)=>{
        console.log(error)
      })
    },
    data() {
      return {
        text: "",
        token:"",
        userName:"",
      }
    },
    methods: {
      sendMsg(){
        let msg = this.userName+"："+this.text
        msgApi.sendMsg(msg).then((rep)=>{

        }).catch((error)=>{

        })
        this.text = ""
      }
    }
  }
</script>

<style scoped="true">
  .selfMsg{
    float: right;
  }
</style>

3.5 最終效果

用兩個不同的瀏覽器，分別登錄admin賬號和wskh賬號進行聊天測試，效果如下（左邊為admin）：

image-20220125134213142

到此這篇關(guān)于使用WebSocket+SpringBoot+Vue搭建簡易網(wǎng)頁聊天室的實現(xiàn)代碼的文章就介紹到這了,更多相關(guān)WebSocket+SpringBoot+Vue 搭建網(wǎng)頁聊天室內(nèi)容請搜索腳本之家以前的文章或繼續(xù)瀏覽下面的相關(guān)文章希望大家以后多多支持腳本之家！

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