JSON_ERROR_SYNTAX sending Json request via Android App - php

Question

I m trying to send a Json Post request using my Android Application.
But something weird happens.
Here is my Android Code:
try {
URL url = new URL(BASE_URL + params[0]);
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setRequestMethod("POST");
connection.setDoOutput(true);
connection.setRequestProperty("Content-Type","application/json");
connection.connect();
//JSonObject
JSONObject json = new JSONObject();
for(int i = 0 ; i < jsonValues.size(); i +=2){
json.put(jsonValues.get(i), jsonValues.get(i + 1));
}
jsonValues.clear();
DataOutputStream output = new DataOutputStream(connection.getOutputStream());
//String encoded= URLEncoder.encode(json.toString(),"UTF-8");
output.writeBytes(URLEncoder.encode(json.toString(),"UTF-8"));
output.flush();
output.close();
int HttpResult = connection.getResponseCode();
if(HttpResult ==HttpURLConnection.HTTP_OK){
BufferedReader br = new BufferedReader(new InputStreamReader(
connection.getInputStream(),"UTF-8"));
String line = null;
StringBuilder sb = new StringBuilder();
while ((line = br.readLine()) != null) {
String lineDecoded = URLDecoder.decode(line, "UTF-8");
sb.append(lineDecoded + "\n");
}
br.close();
System.out.println(""+sb.toString());
if(sb != null){
return sb.toString();
}else{
return null;
}
}else{
Log.d("ERRORRRRR",connection.getResponseMessage());
return connection.getResponseMessage();
}
} catch (MalformedURLException e) {
e.printStackTrace();
return e.toString();
} catch (IOException e) {
e.printStackTrace();
return e.toString();
} catch (JSONException e) {
e.printStackTrace();
return e.toString();
}
My php code is this:
$content = file_get_contents("php://input");
if(strcasecmp($_SERVER['REQUEST_METHOD'], 'POST') != 0)
{
throw new Exception('Request method must be POST!');
}
//Make sure that the content type of the POST request has been set to
application/json
$contentType = isset($_SERVER["CONTENT_TYPE"]) ? trim($_SERVER["CONTENT_TYPE"]) : '';
if(strcasecmp($contentType, 'application/json') != 0){
throw new Exception('Content type must be: application/json');
}
//Receive the RAW post data.
$content = trim(file_get_contents("php://input"));
//Attempt to decode the incoming RAW post data from JSON.
$decoded = json_decode($content, true);
echo($decoded);
exit;
The $decoded is null when I make a request using my Android application and using json_last_error() function I get JSON_ERROR_SYNTAX.
This is the raw content of the post request:
{"name":"test","identifier":"12345677"}
But I can't understand what is the problem. In fact when I try to use Advance Rest Client to simulate the same request it works perfectly as shown in the picture below.

Answer 1

I finally solved my Problem.. It seems to be the
URLEncoder.encode(json.toString(),"UTF-8");
In fact removing it and sending just output.writeBytes(json.toString());
Everything works perfectly