设备列表取消订阅

vue/src/views/iot/device/index.vue

@@ -392,12 +392,13 @@ export default {
         mqttSubscribe(list) {
             // 订阅当前页面设备状态和实时监测
             let topics = [];
-            for (let i = 0; i < list.length; i++) {
-                let topicStatus = "/" + list[i].productId + "/" + list[i].serialNumber + "/status/post";
-                let topicMonitor = "/" + list[i].productId + "/" + list[i].serialNumber + "/monitor/post";
-                topics.push(topicStatus);
-                topics.push(topicMonitor);
-            }
+            // 订阅数太多，会导致emqx连接中断或者订阅缓慢
+            // for (let i = 0; i < list.length; i++) {
+            //     let topicStatus = "/" + list[i].productId + "/" + list[i].serialNumber + "/status/post";
+            //     let topicMonitor = "/" + list[i].productId + "/" + list[i].serialNumber + "/monitor/post";
+            //     topics.push(topicStatus);
+            //     topics.push(topicMonitor);
+            // }
             this.subscribes = topics;
         },
         /** 更新实时监测参数*/

vue/src/views/iot/device/mqtt-client.vue

@@ -30,8 +30,7 @@ export default {
         }
     },
     data() {
-        return {
-        };
+        return {};
     },
     created() {
 
@@ -55,6 +54,7 @@ export default {
             this.client.on("connect", (e) => {
                 console.log("成功连接服务器:", e);
                 // 订阅主题
+                if (subscribeTopics != '' && subscribeTopics.length > 0) {
                     this.client.subscribe(subscribeTopics, {
                         qos: 1
                     }, (err) => {
@@ -65,6 +65,7 @@ export default {
                             console.log('消息订阅失败！')
                         }
                     });
+                }
             });
             // 重新连接
             this.reconnectMqtt()