Changed the place where the string from the JSOn object commandType g…

…ets extracted from the switch statement to variabel definition so that it can be used in the answer.

src/main/scala/PrivateHome/UI/Websocket/websocket.scala

@@ -23,9 +23,9 @@ object websocket {
         val msgText = msg.asTextMessage.getStrictText
         if (msgText.trim != "") { //In case some one sends an empty message only containing whitespaces because otherwise the execution fails without exception
           val json = parse(msgText)
-          val commandType = json \ "Command"
+          val commandType = (json \ "Command").extract[String]
           val args = json \ "Args"
-          val answer = commandType.extract[String] match {
+          val answer = commandType match {
             case "on" => uiControl.receiveCommand(args.extract[commandOn])
             case "off" => uiControl.receiveCommand(args.extract[commandOff])
             case "getDevices" => uiControl.receiveCommand(args.extract[commandGetDevices])