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,"numberOfUsers":4,"roomType":"BigTwo"},{"id":"402881e4328ba09101328ba09edd0000","roomID":1304,"numberOfUsers":4,"roomType":"BigTwo"},{"id":"402881e4328bb83601328bb8af640000","roomID":4383,"numberOfUsers":4,"roomType":"BigTwo"},{"id":"402881e4328bb83601328bd271fe0001","roomID":5000,"numberOfUsers":4,"roomType":"BigTwo"},{"id":"402881e4328bb83601328bd2e0e30002","roomID":2485,"numberOfUsers":4,"roomType":"BigTwo"},{"id":"402881e4328bb83601328bd3087b0003","roomID":6175,"numberOfUsers":4,"roomType":"BigTwo"},{"id":"402881e4328bb83601328bd35a840004","roomID":3750,"numberOfUsers":4,"roomType":"BigTwo"},{"id":"402881e4328bb83601328bd366250005","roomID":370,"numberOfUsers":4,"roomType":"BigTwo"},{"id":"402881e4328bb83601328bd3807d0006","roomID":9477,"numberOfUsers":4,"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.