为什么将单个项目字符串解析为JSONArray失败

Question

I was wondering why my parsing code is not working. I am trying to get responses from a webserver ( GET ) request into a JASONArray . This is already working for multiple items (using GET http://10.0.2.2:8000/exercises ). But if I try to receive a single item ( GET http://10.0.2.2:8000/exercises/1 ) it fails. I already found the cause of the problem. respJSON = new JSONArray(resp); seems to fail on a String that is not surounded by [ and ] , as you can see from my sample output. Can anybody tell me what I am doing wrong here? Should I use a different method, specifically designed for simgle item requests to handle this? I could use a simple check for the first character in the string, but that is such a hack, that I cant believe this is the best way todo it.

(I am only posting the very minimal code of what I use + the output)

HttpHost target = new HttpHost(host, port, "http");
HttpGet getRequest = new HttpGet(requestPath);
getRequest.setHeader("Content-type", "application/json");
getRequest.setHeader("Accept", "application/json");
response = httpClient.execute(target, getRequest);

entity = response.getEntity();
String resp = EntityUtils.toString(entity);
return new JSONArray(resp);

Using this code on a request like http://10.0.2.2:8000/exercises produces the following output String, which can be parsed into a JSONArray (leaving the actual data in here, for better comparsion):

[{"name": "Ringe", "duration": "20", "repeats": "no repeats", "creationtime": "2014-06-07 19:24:53.206000", "pausetime": "3", "alarmsound": "default", "description": "this is android description", "type": "repeats"}, {"name": "fingerkraft", "duration": "-1", "repeats": "10", "creationtime": "2014-06-07 18:08:03.576000", "pausetime": "20", "alarmsound": "default", "description": "asdasdasd", "type": "repeats"}, {"name": "ringe", "duration": "12", "repeats": "no", "creationtime": "2014-06-07 00:54:22.844000", "pausetime": "23", "alarmsound": "default", "description": "asdasdasd", "type": "duration"}]

However, using this method on http://10.0.2.2:8000/exercises/1 produces a String like

{"name": "ringe", "duration": "12", "repeats": "no", "creationtime": "2014-06-07 00:54:22.844000", "pausetime": "23", "alarmsound": "default", "description": "asdasdasd", "type": "duration"}

which can't be parsed into a JSONArray (return is null). So, is this the expected behaviour? I built the API (which is obviously rest) with the django-rest-framework.

Answer 1

 String jsonStr = getJson();
JSONObject json = new JSONObject(jsonStr);

To create a single Json object.