封裝

utils下建立WebSocketManager.js

class WebSocketManager {constructor() {this.url = null;this.websocket = null;this.isConnected = false;this.listeners = {onopen: [],onmessage: [],onclose: [],onerror: [],};this.reconnectionOptions = {enabled: true,maxAttempts: 5,delay: 3000,};this.reconnectionAttempts = 0;this.connecting = false;this.url = null;this.preventReconnect = false;// 添加Ping-Pong定時器this.pingInterval = null;this.websocketId = '';}initializeWebSocket(url) {sessionStorage.setItem('ws_url', url);if (!this.websocket ||this.websocket.readyState === WebSocket.CLOSED) {const websocketId = new Date().getTime();this.websocketId = websocketId;this.websocket = new WebSocket(url);this.url = url;this.preventReconnect = false; // 重置標志位this.websocket.onopen = (event) => {if (websocketId !== this.websocketId) {return}console.log('onopen', websocketId);this.isConnected = true;this.connecting = false;this.reconnectionAttempts = 0;this.fireListeners('onopen', event);this.websocket.send(`ping`);console.log('send registerEcmsServer');this.startPingPong();};this.websocket.onmessage = (event) => {if (websocketId !== this.websocketId) {return}console.log('onmessage', event.data);try {const jsonData = JSON.parse(event.data);this.fireListeners('onmessage', jsonData);} catch (e) {// console.error('onmessage-err', e);}};this.websocket.onclose = (event) => {console.log('onclose ', event);if (websocketId !== this.websocketId) {console.log('do xxx')return}this.stopPingPong();if (event.code !== 4000) {setTimeout(() => {console.log('reconnect ');this.reconnect();}, 2000);}};this.websocket.onerror = (error) => {if (websocketId !== this.websocketId) {return}console.log('onerror ', error);this.fireListeners('onerror', error);};} else {console.log('Soeket exists, no need to create it, 鏈接狀態：',  this.websocket.readyState === WebSocket.OPEN);}}close() {this.preventReconnect = true;this.reconnectionAttempts = 0;this.connecting = false;this.url = null;this.preventReconnect = false;this.isConnected = false;if (this.websocket) {this.websocket.close(4000);}}reconnect() {if (!this.url && sessionStorage.getItem('ws_url')) {return;}if (!this.preventReconnect && !this.connecting) {this.connecting = true;this.reconnectionAttempts++;setTimeout(() => {this.initializeWebSocket(this.url);}, this.reconnectionOptions.delay);}}send(message) {if (this.websocket && this.websocket.readyState === WebSocket.OPEN) {this.websocket.send(message);}}addEventListener(eventType, callback) {if (this.listeners[eventType]) {this.listeners[eventType].push(callback);}}removeEventListener(eventType, callback) {if (this.listeners[eventType]) {const index = this.listeners[eventType].indexOf(callback);if (index !== -1) {this.listeners[eventType].splice(index, 1);}}}fireListeners(eventType, event) {this.listeners[eventType].forEach((callback) => {callback(event);});}startPingPong() {if (this.pingInterval) {clearInterval(this.pingInterval);}// 設置Ping間隔（ms）const pingInterval = 20 * 1000;this.pingInterval = setInterval(() => {if (this.websocket &&this.websocket.readyState === WebSocket.OPEN) {// 發送Ping消息this.websocket.send(`ping`);}}, pingInterval);}stopPingPong() {// 停止Ping-Pong定時器if (this.pingInterval) {clearInterval(this.pingInterval);this.pingInterval = null;}}
}const WebSocketManagerInstance = new WebSocketManager();export default WebSocketManagerInstance;

引入

在main.js中引入

import Vue from 'vue';
import Socket from '@/utils/WebSocketManager';
Vue.prototype.$socket = Socket;

初始化

const WS= 'ws://127.0.0.1:80/ws';
this.$socket.initializeWebSocket(WS);

使用

    mounted() {this.$socket.addEventListener('onmessage', this.handleWs);},beforeDestroy() {this.$socket.removeEventListener('onmessage', this.handleWs);},methods: {// 處理wshandleWs(e) {switch (e.method) {// 被動進入庭審case 'XXX':console.log('xxx')break;}},}

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