Merge remote-tracking branch 'origin/dev' into pre

src/main/resources/application-dev.yml

@@ -52,9 +52,9 @@ timetable:
   winter-end: 04-30
 
 mqtt:
-  username: root
-  password: qwe123QWE
-  server: tcp://8.142.26.206:1883
+  username:
+  password:
+  server:
   qos: 1
 
 xjrsoft: