ciao!

da un servizio remoto, ottengo un json così:
codice:
{
    "index_searched": "isbn",
    "data": [
        {
            "urls_text": "",
            "title": "Beginning iOS 5 Development",
            "marc_enc_level": "~",
            "awards_text": "",
            "dewey_decimal": "005",
            "subject_ids": [
                "computers_technology_apple",
                "computers_technology_hardware_handheld_mobile_devices"
            ],
            "edition_info": "Paperback; 2011-12-07",
            "isbn13": "9781430236054",
            "physical_description_text": "7.5\"x9.2\"x1.9\"; 2.9 lb; 752 pages",
            "author_data": [
                {
                    "name": "Mark, David",
                    "id": "mark_david"
                },
                {
                    "id": "nutting_jack",
                    "name": "Nutting, Jack"
                },
                {
                    "name": "Jeff LaMarche",
                    "id": "jeff_lamarche"
                }
            ],
            "publisher_id": "apress",
            "language": "",
            "lcc_number": "",
            "isbn10": "1430236051",
            "title_long": "Beginning iOS 5 Development: Exploring the iOS SDK",
            "book_id": "beginning_ios_5_development",
            "summary": "...............................",
            "publisher_name": "Apress",
            "publisher_text": "Apress",
            "notes": "",
            "title_latin": "Beginning iOS 5 Development",
            "dewey_normal": "5"
        }
    ]
}
del quale a me interessa principalmente il campo summary.
ho provato a farne il parsing così:
codice:
        @Override
        protected Object doInBackground(Object... params) {
            try {
                JSONObject jsonObj = new JSONObject(s.launchIsbndb(intent.getStringExtra("isbn")));
                JSONArray jsonArray = jsonObj.getJSONArray("data");
//                Log.i("RES: ", jsonArray.getString(0));
                for (int i = 0; i < jsonArray.length(); i++) {
                    JSONObject c = jsonArray.getJSONObject(i);
//                    Log.i("RES: ", c.getString("summary"));
                }
            } catch (IOException ex) {
            } catch (JSONException ex) {
                Log.i("JSONEX: ", ex.getMessage());
            }
            return null;
        }
ma ottengo questa eccezione nel parsing della stringa JSON:
codice:
JSONEX:    Expected ':' after r at character 6 of {r   "data" : [r      {r         "title_latin" : "Beginning Python: From Novice to Professional, Second Edition",r         "notes" : "",r         "dewey_normal" : "5",r         "title_long" : "Beginning Python: From Novice to Professional, Second Edition (Beginning from Novice to Professional)",r         "lcc_number" : "",r         "isbn10" : "1590599829",r         "book_id" : "beginning_python_from_novice_to_professional_second_edition",r         "publisher_text" : "Apress",r         "publisher_name" : "Apress",r         "summary" : ".........",r         "isbn13" : "9781590599822",r         "author_data" : [r            {r               "name" : "Magnus Lie Hetland",r               "id" : "magnus_lie_hetland"r            }r         ],r         "physical_description_text" : "6.9\"x9.2\"x1.5\"; 2.4 lb; 688 pages",r         "publisher_id" : "apress",r         "language" : "",r         "urls_text" : "",r         "marc_enc_level" : "~",r         "title" : "Beginning Python: From Novice to Professional, Second Edition",r         "dewey_decimal" : "005",r         "subject_ids" : [r            "computers_internet_programming_software_design_testing_engin",r            "computers_internet_programming_languages_tools_python",r            "computers_internet_programming_languages_tools_general",r            "computers_internet_general"r         ],r         "awards_text" : "",r         "edition_info" : "Paperback; 2008-09-08"r      }r   ],r   "index_searched" : "isbn"r}r
la richiesta che faccio è questa:
codice:
    public String launchIsbndb(String isbn) throws IOException {
        String stringUrl = "http://isbndb.com/api/v2/json/API_KEY/book/" + isbn.replaceAll("-", "");
        URL url = new URL(stringUrl);
        HttpURLConnection connection = (HttpURLConnection) url.openConnection();
        InputStream is = connection.getInputStream();
        BufferedReader rd = new BufferedReader(new InputStreamReader(is));
        String line;
        StringBuilder response = new StringBuilder();
        while ((line = rd.readLine()) != null) {
            response.append(line);
            response.append('r');
        }
        rd.close();
        return response.toString();
    }
ma non capisco tutte quelle r sparse qua e la.
possibile un problema di encoding?