Wednesday, May 23, 2012

Exception when trying to parse JSON from a MySQL query

I'm having a problem parsing the JSON response from MySQL in Java.



try {
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost("http://parkfinder.zxq.net/default.php");
httppost.setEntity(new UrlEncodedFormEntity(coordinatesToSend));
HttpResponse response = httpclient.execute(httppost);
Log.d("HTTP Client", "HTTP Request made");

HttpEntity entity = response.getEntity();
inputStream = entity.getContent();
BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(inputStream,
"iso-8859-1"), 8);
sb = new StringBuilder();
sb.append(bufferedReader.readLine() + "\n");

String line = "0";
while ((line = bufferedReader.readLine()) != null) {
sb.append(line + "\n");
}
inputStream.close();
bufferedReader.close();
result = sb.toString();
Log.d("RESULT", result);
JSONObject json_data = new JSONObject(result);
Log.d("JSON","Finished");
JSONArray nameArray = json_data.names();
JSONArray valArray = json_data.toJSONArray(nameArray);
for (int i = 0; i < nameArray.length(); i++) {
Log.d("NAMES", nameArray.getString(i));
}
for (int i = 0; i < nameArray.length(); i++) {
Log.d("NAMES", nameArray.getString(i));
}

} catch (Exception e) {
// TODO: handle exception
}


This is the MySQL Accessing and retreiving info, and parsing it afterwars.
the



Log.d("RESULT", result);


line posts the correct results:



2[{"longtitude":"32.32","latitude":"33.12"}]


however the



Log.d("JSON","Finished");


Never gets called,
so the problem seems to be on this line



JSONObject json_data = new JSONObject(result);


This while thing is taken from a tutorial which I saw many examples of it over the internet and on this site, some stated errors, but not this one.



Any help would be great!
Thanks



EDIT:
The printStackTrace() output:



0`5-14 21:38:18.639: WARN/System.err(665): org.json.JSONException: A JSONObject text must begin with '{' at character 1 of 2[{"longtitude":"32.32","latitude":"33.12"}]`


The php code:



<?php
$host = "localhost";
$user = "**MASKED**";
$password = "**MASKED**";
$database = "parkfinder_zxq_coordinates";
$connection = mysql_connect($host, $user, $password) or die("couldn't connect to server");
$db = mysql_select_db($database, $connection) or die("couldn't select database.");
//$request_parked = $_REQUEST['parked'];
$request_long = $_REQUEST['longtitude'];
$request_lat = $_REQUEST['latitude'];
//if ($request_parked == 'FIND') {
$q = mysql_query("SELECT * FROM Coordinates");
while ($e = mysql_fetch_assoc($q))
$output[] = $e;

print (json_encode($output));
//}

mysql_close();
?>




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