支付宝小程序集成mqtt兼容IOS和安卓

let xmqtt = require('./xmqtt.js');
var mqtt = {};
import { uuid } from 'vue-uuid';
const host = 'alis://'+process.env.SERVER_HOST+':8084/mqtt';
//client对象
var client = null;
var options={
    protocolVersion: 4, //MQTT连接协议版本
    clientId: 'wxapp_client_'+uuid.v1(),
    myAli: null,
    clean: true,
    password: 'dd',
    username: 'admin',
    reconnectPeriod: 3000, //1000毫秒，两次重新连接之间的间隔
    connectTimeout: 30 * 1000, //1000毫秒，两次重新连接之间的间隔
    resubscribe: true //如果连接断开并重新连接，则会再次自动订阅已订阅的主题（默认true）
}
//订阅的主题与回掉方法
var map = new Map();
/**
 * mqtt 连接状态
 * 0:正在连接
 * 1:连接成功建立
 * 2:连接正在关闭
 * 3:连接已经关闭
 */
let connectStatus = 0;
//初始化weboscket
mqtt.initMqtt = () => {
    //开始连接
    if(null == client){
        console.log('连接mqtt服务器',host,options)
        client = xmqtt.connect(host, options);
    }
    client.on('connect', function (connack) {
        console.log('连接成功')
    })
    //服务器下发消息的回调
    client.on("message", function (topic, payload) {
        console.log(" 收到 topic:" + topic + " , payload :" + payload)
    })
    //服务器连接异常的回调
    client.on("error", function (error) {
        console.log(" 服务器 error 的回调" + error)
    })
    //服务器重连连接异常的回调，一般是域名或者服务器不存在
    client.on("reconnect", function () {
        console.log(" 服务器 reconnect的回调")
    })
    //服务器连接异常的回调
    client.on("offline", function (err) {
        console.log(" 服务器offline的回调"+JSON.stringify(err))
    })
}
/**
 * 订阅主题
 * topic：主题名称
 * qos：服务质量
 */
mqtt.subscribe = function(topic, qos, receiveCallback) {
    if (client && client.connected) {
        //仅订阅单个主题
        client.subscribe(topic, function (err, granted) {
            if (!err) {
                console.log('订阅主题成功')
                map.set('device',receiveCallback);
            } else {
                console.log('订阅主题失败')
            }
        })
    } else {
        console.log('请先连接服务器')
        setTimeout(function() {
            mqtt.subscribe(topic, qos, receiveCallback);
        }, 1000)
    }
}
/**
 * 取消订阅主题
 * topic：主题名称
 */
mqtt.unsubscribe = function(topic) {
    if (client && client.connected) {
        client.unsubscribe(topic);
        map.delete('device')
    } else {
        console.log('请先连接服务器')
        setTimeout(function() {
            mqtt.unsubscribe(topic);
        }, 1000)
    }
}
/**
 * 发送消息
 * message：消息内容
 * topic：主题
 * qos：服务质量
 */
mqtt.publish = function(message, topic, qos) {
    if (client && client.connected) {
        client.publish(topic, message,qos);
        console.log('发布成功')
    } else {
        console.log('请先连接服务器')
        uni.showToast({
            title: '正在重新连接服务器，请稍后重试',
            icon: 'none',
            duration: 2000
        })
        setTimeout(function() {
            mqtt.publish(message, topic, qos);
        }, 1000)
    }
}
/**
 * 关闭连接
 */
mqtt.disconnect = function() {
    console.log("关闭mqtt连接");
    if (null != client) {
        client.disconnect();
    } else {
        //Do-nothing
    }
    client = null;
}
mqtt.initMqtt();
export default mqtt;

//#ifdef MP-ALIPAY
import mqtt from "../../common/utils/alimqtt";
//#endif

onLoad(option) {
 //初始化时订阅该主题，当收到消息后自动调用deviceReceiveMsg方法
   mqtt.subscribe('device', 0, this.deviceReceiveMsg);
 }

methods: {
    deviceReceiveMsg(topic, msgObj) {
      //mqtt收到消息
      console.log('当前主题' + topic)
      console.log('消息内容' + msgObj)
    }
  }

mqtt.publish("device", "测试消息", 0)