VUE使用store全局websocket长连接

websocket.js

export default {

    namespaced: true,
    state: {
        websock: null,
        url: '',
        lockReconnect: false, //是否真正建立连接
        timeout: 25 * 1000, //25秒一次心跳
        timeoutObj: null, //心跳心跳倒计时
        serverTimeoutObj: null, //心跳倒计时
        timeoutnum: null, //断开 重连倒计时
        message: {},
    },
    getters: {
        message(state) {
            return state.message;
        }
    },
    mutations: {
        WEBSOCKET_INIT(state, url) {
            var that = this;
            state.websock = new WebSocket(url);
            state.url = url;
            state.websock.onopen = function() {
                console.log("连接成功") //发送用户JWT令牌 后端解析后自动绑定用户
                // state.websock.send('id:123')
                // state.websock.send('OpenBarScanner')
                //发送心跳包
                that.commit('websocket/start')
            }
            state.websock.onmessage = function(callBack) {
                // console.log(callBack.data)
                //重置心跳
                // console.log(callBack.data)
                that.commit('websocket/reset')
                if (callBack.data == 'heartCheck') {
                    return;
                }
                state.message = callBack.data
            }
            state.websock.οnerrοr = function() { //e错误
                // console.log(e)
                that.commit('websocket/reconnect')
            }
            state.websock.onclose = function() { //e关闭
                // console.log(e)
                that.commit('websocket/reconnect')
            }
        },
        WEBSOCKET_SEND(state, message) {
            state.websock.send(message);
        },
        reconnect(state) { //重新连接
            // console.log("重新连接")
            var that = this;
            if (state.lockReconnect) {
                return;
            }
            state.lockReconnect = true;
            //没连接上会一直重连，设置延迟避免请求过多
            state.timeoutnum && clearTimeout(state.timeoutnum);
            state.timeoutnum = setTimeout(function() {
                //新连接
                that.commit('websocket/WEBSOCKET_INIT', state.url)
                state.lockReconnect = false;
            }, 5000);
        },
        reset(state) { //重置心跳
            //清除时间
            clearTimeout(state.timeoutObj);
            clearTimeout(state.serverTimeoutObj);
            //心跳
            this.commit('websocket/start')
        },
        start(state) { //开启心跳
            // console.log("开启心跳")
            var that = this;
            state.timeoutObj && clearTimeout(state.timeoutObj);
            state.serverTimeoutObj && clearTimeout(state.serverTimeoutObj);
            state.timeoutObj = setTimeout(function() {
                //这里发送一个心跳，后端收到后，返回一个心跳消息，
                // console.log(state.websock)
                if (state.websock.readyState == 1) { //如果连接正常
                    state.websock.send("heartCheck");
                } else { //否则重连
                    that.commit('websocket/reconnect')
                }
                state.serverTimeoutObj = setTimeout(function() {
                    //超时关闭
                    state.websock.close();
                }, state.timeout);

            }, state.timeout)
        },
    },
    actions: {
        WEBSOCKET_INIT({
            commit
        }, url) {
            commit('WEBSOCKET_INIT', url)
        },
        WEBSOCKET_SEND({
            commit
        }, message) {
            commit('WEBSOCKET_SEND', message)
        },

    }
}

初始化连接

this.$store.dispatch('websocket/WEBSOCKET_INIT', 'wss://' + configs.socketPath + '/websocket/' + data.data.chatToken);

页面接收消息

 computed: {
            listenWebsocket() {
                return this.$store.state.websocket.message;
            }
        },
        watch: {
            listenWebsocket: function(newstr) {
                var newmsg = JSON.parse(newstr);
                if (newstr && newstr.indexOf('[') == -1) {
                    //收到信消息
                    this.$notification.open({
                        message: newmsg.objName,
                        description: newmsg.title
                    });
                    //刷新消息
                    this.$store.dispatch('websocket/WEBSOCKET_SEND', 'refreshMessage');
                } else {
                    this.noticeData = [];
                    this.messageData = [];
                    this.msgCount = newmsg.length;
                    for (var i = 0; i < newmsg.length; i++) {
                        var m = newmsg[i];
                        m.createDate = m.objName + ' · ' + this.nowTimeAgo(m.createDate);
                        if (m.messageType.indexOf('Notice')!=-1) {
                            this.noticeData.push(m);
                        }
                        if (m.messageType.indexOf('Message')!=-1) {
                            this.messageData.push(m);
                        }
                    }
                }
            }
        }

发送消息

this.$store.dispatch('websocket/WEBSOCKET_SEND', 'refreshMessage');