I am trying to transfer data to the server, but this error is logged. After that, it appears in the log error Fatal Error: AsynkTask # 1. Here is the actual log:

`E/JSON Parser: Error parsing data org.json.JSONException: Value <!doctype of type java.lang.String cannot be converted to JSONObject 07-21 14:49:00.343 15140-15409/avdeewkiril.paybillet D/dalvikvm: create interp thread : stack size=32KB 07-21 14:49:00.343 15140-15409/avdeewkiril.paybillet D/dalvikvm: create new thread 07-21 14:49:00.343 15140-15409/avdeewkiril.paybillet D/dalvikvm: new thread created 07-21 14:49:00.343 15140-15409/avdeewkiril.paybillet D/dalvikvm: update thread list 07-21 14:49:00.343 15140-15417/avdeewkiril.paybillet D/dalvikvm: threadid=14: interp stack at 0x5ed9c000 07-21 14:49:00.343 15140-15417/avdeewkiril.paybillet D/dalvikvm: threadid=14: created from interp 07-21 14:49:00.343 15140-15409/avdeewkiril.paybillet D/dalvikvm: start new thread 07-21 14:49:00.343 15140-15409/avdeewkiril.paybillet D/dalvikvm: threadid=13: exiting 07-21 14:49:00.343 15140-15409/avdeewkiril.paybillet W/dalvikvm: threadid=13: thread exiting with uncaught exception (group=0x4193a9a8) 07-21 14:49:00.344 15140-15417/avdeewkiril.paybillet D/dalvikvm: threadid=14: notify debugger 07-21 14:49:00.344 15140-15417/avdeewkiril.paybillet D/dalvikvm: threadid=14 (AsyncTask #2): calling run() 07-21 14:49:00.345 15140-15409/avdeewkiril.paybillet E/AndroidRuntime: FATAL EXCEPTION: AsyncTask #1 java.lang.RuntimeException: An error occured while executing doInBackground() at android.os.AsyncTask$3.done(AsyncTask.java:299) at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:352) at java.util.concurrent.FutureTask.setException(FutureTask.java:219) at java.util.concurrent.FutureTask.run(FutureTask.java:239) at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573) at java.lang.Thread.run(Thread.java:838) Caused by: java.lang.NullPointerException at avdeewkiril.paybillet.MainActivity$NewBillet.doInBackground(MainActivity.java:242) at avdeewkiril.paybillet.MainActivity$NewBillet.doInBackground(MainActivity.java:219) at android.os.AsyncTask$2.call(AsyncTask.java:287) at java.util.concurrent.FutureTask.run(FutureTask.java:234) at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573) at java.lang.Thread.run(Thread.java:838) `

Here is the code itself:

 class NewBillet extends AsyncTask<String, String, String> { @Override protected void onPreExecute(){ super.onPreExecute(); progressDialog = new ProgressDialog(MainActivity.this); progressDialog.setMessage("Бронирование биллета"); progressDialog.setIndeterminate(false); progressDialog.setCancelable(true); progressDialog.show(); } protected String doInBackground(String[]args){ String pay_status = "no"; String real_date_from = args[0]; String real_date_back = args[1]; List<NameValuePair> params = new ArrayList<NameValuePair>(); params.add(new BasicNameValuePair("real_date_from", real_date_from)); params.add(new BasicNameValuePair("real_date_back", real_date_back)); params.add(new BasicNameValuePair("pay_status", pay_status)); JSONObject json = jsonParser.makeHttpRequest(url_create_new_ticket, "POST", params); Log.d("Create Response", json.toString()); try{ int success = json.getInt(TAG_SUCCES); if (success == 1){ startActivity(new Intent(getApplicationContext(), Tickets.class)); finish(); } } catch (JSONException e){ e.printStackTrace(); } return null; } protected void onPostExecute(String file_url){ progressDialog.dismiss(); } } public void Bronirovat(View v) { TextView dateFrom =(TextView)findViewById(R.id.dateStart); TextView dateBack = (TextView)findViewById(R.id.dateEnd); new NewBillet().execute(dateFrom.getText().toString(), dateBack.getText().toString()); }

The log refers to the line Log.d("Create Response", json.toString()); As far as I understand, the error lies in the fact that JSON cannot convert the string to the desired type. Here is the JSONParser class:

 public class JSONParser { static InputStream is = null; static JSONObject jObj = null; static String json = ""; // constructor public JSONParser() { } // function get json from url // by making HTTP POST or GET method public JSONObject makeHttpRequest(String url, String method, List params) { // Making HTTP request try { // check for request method if(method == "POST"){ // request method is POST // defaultHttpClient DefaultHttpClient httpClient = new DefaultHttpClient(); HttpPost httpPost = new HttpPost(url); httpPost.setEntity(new UrlEncodedFormEntity (params)); HttpResponse httpResponse = httpClient.execute(httpPost); HttpEntity httpEntity = httpResponse.getEntity(); is = httpEntity.getContent(); }else if(method == "GET"){ // request method is GET DefaultHttpClient httpClient = new DefaultHttpClient(); String paramString = URLEncodedUtils.format (params, "utf-8"); url += "?" + paramString; HttpGet httpGet = new HttpGet(url); HttpResponse httpResponse = httpClient.execute(httpGet); HttpEntity httpEntity = httpResponse.getEntity(); is = httpEntity.getContent(); } } catch (UnsupportedEncodingException e) { e.printStackTrace(); } catch (ClientProtocolException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } try { BufferedReader reader = new BufferedReader(new InputStreamReader ( is, "iso-8859-1"), 8); StringBuilder sb = new StringBuilder(); String line = null; while ((line = reader.readLine()) != null) { sb.append(line + "\n"); } is.close(); json = sb.toString(); } catch (Exception e) { Log.e ("Buffer Error", "Error converting result " + e.toString ()); } // try parse the string to a JSON object try { jObj = new JSONObject (json); } catch (JSONException e) { Log.e("JSON Parser", "Error parsing data " + e.toString()); } // return JSON String return jObj; } }

I also attach php, because I think I might have made it somewhere there:

  <?php $response = array(); if (isset($_POST['real_date_from']) && isset($_POST['real_date_back']) && isset($_POST['pay_status'])) { $real_date_from = $_POST['real_date_from']; $real_date_back = $_POST['real_date_back']; $pay_status = $_POST['pay_status']; require 'db_connect.php'; $db = new DB_CONNECT(); $result = mysql_query("INSERT INTO bus_order(real_date_from, real_date_back, pay_status) VALUES('$real_date_from', '$real_date_back', '$pay_status')"); if ($result) { $response["success"] = 1; $response["message"] = "Product successfully created."; echo json_encode($response); } else { $response["success"] = 0; $response["message"] = "Oops! An error occurred."; echo json_encode($response); } } else { $response["success"] = 0; $response["message"] = "Required field(s) is missing"; echo json_encode($response); } ?>

Screen DB

    1 answer 1

    The error speaks for itself, your JSONObject json not JSON at all ..

    1. Check if your url looks right
    2. If correct, see what type of data it returns.
    3. That’s how the lines shouldn’t be compared if(method == "POST") . Strings like any other objects are compared via if(stringA.equals(stringB))
    4. Under debug see where it falls in makeHttpRequest
    • And you can in more detail. Since the first one disappears, this url entered in the browser, everything works. Do not tell me how to see what type of data it returns? - Kirill Avdeev
    • Found an error, was in the php file config. Wrong login and password were entered. - Kirill Avdeev