first commit

server/comman/mqttclinet.js

@@ -0,0 +1,7 @@
+const mqtt = require('mqtt');
+const db=require("../comman/db")
+const client = mqtt.connect('mqtt://82.156.1.111:40000', {
+    clientId: 'web_collector',
+    username: 'xin',
+    password: 'irishk'
+});