我正在尝试从android解析json，但出现了这个奇怪的异常。我的json数据是

{“ id”：“ 1”，“ owner”：“ 1”，“ name”：“ gravitas”，“ description”：“是一场盛会”，“
start_time”：“ 0000-00-00 00:00:00 “，” end_time“：” 0000-00-00 00:00:00“，”
venue“：” vellore“，” radius“：” 10“，” lat“：” 11“，” lng“：” 11“ ，“ type”：“
type”，“所有者名称”：“ dilip”，“ noofpolls”：0，“ noofquizes”：0，“人员参与”：0，“
result”：true}

在Android中

JSONObject j =new JSONObject(response);
Event pst = gson.fromJson(j.toString(),  Event.class);

我得到：

org.json.JSONException: end of input at character 0 of

它出什么问题了？这是代码…

RestClient client = new RestClient("http://192.168.1.3/services/events/"+eve.getName());         
        try {
             Log.i("MY INFO", "calling boston");
            client.Execute(RequestMethod.POST);
        } catch (Exception e) {
            e.printStackTrace();
        }

        String response = client.getResponse();
         Log.i("MY INFO", response);
         GsonBuilder gsonb = new GsonBuilder();
         Gson gson = gsonb.create();
         Event pst = null;

        try {
            JSONObject j =new JSONObject(response);
            pst = gson.fromJson(j.toString(),  Event.class);

        } catch (JSONException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }