前臺傳遞過來的資料：

[{"aceneId":"","deviceCode":"27","deviceFirm":"春泉","deviceId":"1","deviceKind":"溫控器","deviceName":"溫控器001",

"deviceStation":"d8-b0-4c-b4-bc-a9","id":"110","isOn":"0","pattern":"製冷","permission":"1,00,99,0","registerAddress"

:"0081","registerNumber":"4","speed":"高檔","temperature":"20","type":"0"},

{"aceneId":"","deviceCode":"16","deviceFirm":"春泉","deviceId":"2","deviceKind":"溫控器","deviceName":"溫控器002",

"deviceStation":"d8-b0-4c-b4-bc-a9","id":"111","isOn":"0","pattern":"製冷","permission":"1,00,99,0",

"registerAddress":"0081","registerNumber":"4","speed":"高檔","temperature":"20","type":"0"}]

JSONArray jsonArray = JSONArray.fromObject(deviceList);
String jsonString =  jsonArray.getString(0);
Map deviceMap = new 
 
HashMap<>();
Gson gson = new Gson();
deviceMap = gson.fromJson(jsonString, deviceMap.getClass());
System.out.println(deviceMap.get("deviceCode").toString());