我有以下代码：
JsonParser parser = new JsonParser();
System.out.println("gson.toJson: " + gson.toJson(roomList));
JsonObject json2 = parser.parse("{\"b\":\"c\"}").getAsJsonObject();
System.out.println("json2: " + json2);
JsonObject json = parser.parse(gson.toJson(roomList)).getAsJsonObject();
System.out.println("json: " + json);
它给了我以下输出：
gson.toJson: [{"id":"8a3d16bb328c9ba201328c9ba5db0000","roomID":9411,"numberOfUsers":4,"roomType":"BigTwo"},{"id":"402881e4328b9f3a01328b9f3bb80000","roomID":1309,{"id":"402881e4328ba09101328ba09edd0000","roomID":1304,{"id":"402881e4328bb83601328bb8af640000","roomID":4383,{"id":"402881e4328bb83601328bd271fe0001","roomID":5000,{"id":"402881e4328bb83601328bd2e0e30002","roomID":2485,{"id":"402881e4328bb83601328bd3087b0003","roomID":6175,{"id":"402881e4328bb83601328bd35a840004","roomID":3750,{"id":"402881e4328bb83601328bd366250005","roomID":370,{"id":"402881e4328bb83601328bd3807d0006","roomID":9477,"roomType":"BigTwo"}]
json2: {"b":"c"}
java.lang.IllegalStateException: This is not a JSON Object.
有人可以帮我解析我的Json字符串到JsonObject吗？我在http://jsonlint.com/中检查过我的json是有效的.
解决方法
这是因为由于JSON结构..
我必须首先将它放入JSONObject中,就像这样
我必须首先将它放入JSONObject中,就像这样
JsonObject jsonObj = new JsonObject(); jsonObj.addProperty(ServerConstants.JSONoutput,gson.toJson(roomList));
然后我会反序列化
List<RoomData> roomList = gson.fromJson(jsonObj.get(CardGameConstants.JSONoutput).toString(),listType);
for (RoomData roomData : roomList) {
System.out.println(roomData.getRoomID());
}