mqtt优化

vue/src/utils/mqttTool.js

@@ -0,0 +1,140 @@
+import mqtt from 'mqtt'
+import { getToken } from "@/utils/auth";
+
+let mqttTool = {
+  client: null,
+}
+
+/** 连接Mqtt */
+mqttTool.connect = function () {
+  let options = {
+    username: "wumei-smart",
+    password: getToken(),
+    cleanSession: true,
+    keepAlive: 30,
+    clientId: 'web-' + Math.random().toString(16).substr(2),
+    connectTimeout: 10000
+  }
+  // 配置Mqtt地址
+  // let url = "ws://" + window.location.hostname + ":8083/mqtt";
+  console.log("mqtt地址：", process.env.VUE_APP_EMQX_SERVER_URL);
+  mqttTool.client = mqtt.connect(process.env.VUE_APP_EMQX_SERVER_URL, options);
+  mqttTool.client.on("connect", (e) => {
+    console.log('mqtt连接成功');
+  });
+  // 重新连接
+  mqttTool.client.on('reconnect', (error) => {
+    console.log('正在重连:', error)
+  });
+  // 发生错误
+  mqttTool.client.on('error', (error) => {
+    console.log('Mqtt客户端连接失败：', error)
+    mqttTool.client.end();
+  })
+  // 断开连接
+  mqttTool.client.on('close', function (res) {
+    console.log('已断开Mqtt连接');
+  });
+}
+/** 断开连接 */
+mqttTool.end = function () {
+  return new Promise((resolve, reject) => {
+    if (mqttTool.client == null) {
+      resolve('未连接')
+      console.log("未连接")
+      return;
+    }
+    mqttTool.client.end()
+    mqttTool.client = null
+    console.log('Mqtt服务器已断开连接！');
+    resolve('连接终止')
+  })
+}
+/** 重新连接 */
+mqttTool.reconnect = function () {
+  return new Promise((resolve, reject) => {
+    if (mqttTool.client == null) {
+      // 调用resolve方法，Promise变为操作成功状态（fulfilled）
+      resolve('未连接')
+      console.log("未连接")
+      return;
+    }
+    console.log('正在重连...', res);
+    mqttTool.client.reconnect()
+  })
+}
+/** 消息订阅 */
+mqttTool.subscribe = function (topics) {
+  return new Promise((resolve, reject) => {
+    if (mqttTool.client == null) {
+      resolve('未连接')
+      console.log("未连接")
+      uni.showToast({
+        icon: 'none',
+        title: 'mqtt未连接',
+      });
+      return;
+    }
+    mqttTool.client.subscribe(topics, {
+      qos: 1
+    }, function (err, res) {
+      console.log("订阅主题：", topics);
+      if (!err && res.length > 0) {
+        console.log("订阅成功")
+        resolve('订阅成功')
+      } else {
+        console.log("订阅失败，主题可能已经订阅")
+        resolve('订阅失败')
+        return;
+      }
+    })
+  })
+}
+/** 取消订阅 */
+mqttTool.unsubscribe = function (topics) {
+  return new Promise((resolve, reject) => {
+    if (mqttTool.client == null) {
+      resolve('未连接')
+      console.log("未连接")
+      return;
+    }
+    mqttTool.client.unsubscribe(topics, function (err) {
+      if (!err) {
+        resolve('取消订阅成功')
+        console.log("取消订阅成功")
+      } else {
+        resolve('取消订阅失败')
+        console.log("取消订阅失败")
+        return;
+      }
+    })
+  })
+}
+mqttTool.publish = function (topic, message, name) {
+  return new Promise((resolve, reject) => {
+    if (mqttTool.client == null) {
+      resolve('Mqtt客户端未连接')
+      console.log("Mqtt客户端未连接")
+      return;
+    }
+    mqttTool.client.publish(topic, message, { qos: 1 }, function (err) {
+      console.log('发送主题：', topic);
+      console.log('发送内容：', message);
+      if (!err) {
+        if (topic.indexOf('offline') > 0) {
+          console.log("[ " + name + " ] 影子指令发送成功");
+          resolve("[ " + name + " ] 影子指令发送成功");
+        } else {
+          console.log("[ " + name + " ] 指令发送成功");
+          resolve("[ " + name + " ] 指令发送成功");
+        }
+      } else {
+        console.log("[ " + name + " ] 指令发送失败");
+        reject("[ " + name + " ] 指令发送失败");
+        return;
+      }
+    })
+  })
+}
+
+export default mqttTool