js websocket断开重连实例代码,请根据自己需求做出相应改动Vue中使用websocket
$(function() {var lockReconnect = false;//避免重复连接var ws = null; //WebSocket的引用var wsUrl = "xxxxxx"; //这个要与后端提供的相同//创建WebSocket连接,如果不确定浏览器是否支持，可以使用socket.js做连接function createWebSocket(url){try {if ('WebSocket' in window) {ws = new WebSocket("ws://" + url + "/socketServer");} else {ws = new SockJS("http://" + url + "/sockjs/socketServer");}initEventHandle();} catch (e) {reconnect(wsUrl);}}function reconnect(url) {if(lockReconnect) return;lockReconnect = true;//没连接上会一直重连，设置延迟避免请求过多setTimeout(function () {createWebSocket(wsUrl);console.log("正在重连，当前时间"+new Date())lockReconnect = false;}, 5000); //这里设置重连间隔(ms)}/*********************初始化开始**********************/function initEventHandle() {// 连接成功建立后响应ws.onopen = function() {console.log("成功连接到" + wsUrl);//心跳检测重置heartCheck.reset().start();}// 收到服务器消息后响应ws.onmessage = function(e) {//如果获取到消息，心跳检测重置//拿到任何消息都说明当前连接是正常的heartCheck.reset().start();//Json转换成Objectvar msg = eval('(' + e.data + ')');if(msg.message == "heartBeat"){//忽略心跳的信息，因为只要有消息进来，断线重连就会重置不会触发}else{//处理消息的业务逻辑}}// 连接关闭后响应ws.onclose = function() {console.log("关闭连接");reconnect(wsUrl);//重连}ws.onerror = function () {reconnect(wsUrl);//重连};} /***************初始化结束***********************///心跳检测var heartCheck = {timeout: 15000,//毫秒timeoutObj: null,serverTimeoutObj: null,reset: function(){clearTimeout(this.timeoutObj);clearTimeout(this.serverTimeoutObj);return this;},start: function(){var self = this;this.timeoutObj = setTimeout(function(){//这里发送一个心跳，后端收到后，返回一个心跳消息，//onmessage拿到返回的心跳就说明连接正常ws.send("HeartBeat");console.log("HeartBeat");self.serverTimeoutObj = setTimeout(function(){//如果超过一定时间还没重置，说明后端主动断开了ws.close();//如果onclose会执行reconnect，我们执行ws.close()就行了.如果直接执行reconnect 会触发onclose导致重连两次}, self.timeout)}, this.timeout)}}// 发送字符串消息$("#sendBtn").click(function() {if (ws.readyState ==1) {//自定义消息串，让后端接收ws.send("xxxxxx");}else{alert("当前连接超时，请刷新重试!");}return false;});// 强制退出window.onunload = function() {ws.close();}createWebSocket(wsUrl);/**启动连接**/});
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