如何将除一个数组值以外的链接哈希映射转换为逗号

Question

这是我的linkedhashmap

LinkedHashMap<String, Object> jsonOrderedMap = new LinkedHashMap<String, Object>();
jsonOrderedMap = {MessageName=HAPPY DIWALI, MessageID =M001, ListofVehicleID =["KA 01-A-1234","KA-01-A-567"]}

我希望结果出现在

{"MessageName":"HAPPY DIWALI","MessageID ":"M001","ListofVehicleID ":["KA 01-A-1234","KA-01-A-567"]}

上午使用

Gson gson = new Gson();
String json = gson.toJson(jsonOrderedMap, LinkedHashMap.class);

进行转换，但得到的结果为

{"MessageName":"HAPPY DIWALI","MessageID ":"M001","ListofVehicleID ":"[\"KA 01-A-1234\",\"KA-01-A-567\"]"}

数组内的逗号和逗号都为反斜杠