org.json.JSONException: Fin de saisie à caractère 0 de

Je suis en train de télécharger la vidéo sur le serveur,mais à chaque fois que je suis en train de télécharger la réponse est montrant null null et dans le logcat il montre org.json.JSONException: Fin de saisie à caractère 0,à la place de mon statut de la réponse:le succès msg:vidéo mise en ligne..tout organisme peut me dire quelle est mon erreur?

public class VideoUpload extends Activity{
MediaController mc;
private static int SELECT_PICTURE = 1;  
private String selectedImagePath="";  
TextView messageText;  
Button uploadButton;  
int serverResponseCode = 0;  
ProgressDialog dialog = null;  
private static final String TAG_SUCCESS = "status";  
private static final String TAG_MSG = "msg";  
String imgs;  
String btns;  
String upLoadServerUri = null;  
ThreadPolicy th = new ThreadPolicy.Builder().permitAll().build();  
final String uploadFilePath =  Environment.getExternalStorageDirectory().getPath();  
private Button buttonLoadImage;  
private VideoView img;  
private String User_ID;  
private String sta;  
private String msg;  
private HttpURLConnection conn = null;  
private  String result="";  
@Override  
public void onCreate(Bundle savedInstanceState) {  
super.onCreate(savedInstanceState);
setContentView(R.layout.layout_video);
StrictMode.setThreadPolicy(th);
User_ID=this.getIntent().getStringExtra("id");
System.out.println("photo upload user id"+User_ID);
img = (VideoView)findViewById(R.id.imgViewvid);
mc = new MediaController(this);
mc.setAnchorView(img);
buttonLoadImage = (Button) findViewById(R.id.buttonLoadvid);
buttonLoadImage.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
Intent intent = new Intent();
intent.setType("video/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(Intent.createChooser(intent,"Select Picture"), SELECT_PICTURE);
}
});
uploadButton = (Button)findViewById(R.id.uploadButtonvid);
messageText  = (TextView)findViewById(R.id.messageTextvid);
uploadButton.setOnClickListener(new OnClickListener() {            
@Override
public void onClick(View v) {
dialog = ProgressDialog.show(VideoUpload.this, "", "Uploading file...", true);
new Thread(new Runnable() {
public void run() {
runOnUiThread(new Runnable() {
public void run() {
messageText.setText("uploading started.....");
}
});                      
uploadFile(selectedImagePath);
}
}).start();        
}
});
}
@Override  
public void onActivityResult(int requestCode, int resultCode, Intent data) {
if (resultCode == RESULT_OK) 
{
if (requestCode == SELECT_PICTURE) 
{
Uri mVideoURI = data.getData();
selectedImagePath = getPath(mVideoURI);
messageText.setText(selectedImagePath);
System.out.println(requestCode);
System.out.println("Image Path : " + selectedImagePath);
img.setVideoURI(mVideoURI);  
}
}
}  
@SuppressWarnings("deprecation")
public String getPath(Uri uri) {
String[] projection = { MediaStore.Images.Media.DATA };
Cursor cursor = managedQuery(uri, projection, null, null, null);
int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
return cursor.getString(column_index);
}
public int uploadFile(String sourceFileUri) {
DataOutputStream dos = null;  
String lineEnd = "\r\n";
String twoHyphens = "--";
String boundary = "*****";
int bytesRead, bytesAvailable, bufferSize;
byte[] buffer;
int maxBufferSize = 1 * 1024 * 1024; 
File sourceFile = new File(sourceFileUri); 
if (!sourceFile.isFile()) {
dialog.dismiss(); 
Log.e("uploadFile", "Source File not exist :"
+ selectedImagePath);
runOnUiThread(new Runnable() {
public void run() {
messageText.setText("Source File not exist :"
+ selectedImagePath);
}
}); 
return 0;
}
else
{
try { 
btns=uploadButton.getTag().toString();
System.out.println(btns);
String fileName = sourceFileUri;
File f  = new File(selectedImagePath);
imgs= f.getName();
System.out.println(imgs);
upLoadServerUri = "http://mywebsitename.com/webservice/addvideo?version=apps&user_login_id="+User_ID+"&video_1="+imgs+"&action="+btns;
FileInputStream fileInputStream = new FileInputStream(sourceFile);
URL url = new URL(upLoadServerUri);
System.out.println(url);
conn = (HttpURLConnection) url.openConnection(); 
conn.setDoInput(true); //Allow Inputs
conn.setDoOutput(true); //Allow Outputs
conn.setUseCaches(false); //Don't use a Cached Copy
conn.setRequestMethod("POST");
conn.setRequestProperty("Connection", "Keep-Alive");
conn.setRequestProperty("ENCTYPE", "multipart/form-data");
conn.setRequestProperty("Content-Type", "multipart/form-data;boundary=" + boundary);
conn.setRequestProperty("video_1", imgs);
conn.setRequestProperty("user_login_id", User_ID);
conn.setRequestProperty("action", btns);
conn.setRequestProperty("version", "apps");
dos  = new DataOutputStream(conn.getOutputStream());
dos.writeBytes(twoHyphens + boundary + lineEnd);
dos.writeBytes("Content-Disposition: form-data; name=\"type\""
+ lineEnd);
dos.writeBytes(lineEnd);
//assign value
dos.writeBytes("version=apps");
dos.writeBytes(lineEnd);
dos.writeBytes(twoHyphens + boundary + lineEnd);
dos.writeBytes("user_login_id="+User_ID);
dos.writeBytes(lineEnd);
dos.writeBytes(twoHyphens + boundary + lineEnd);
dos.writeBytes("action="+btns);
dos.writeBytes(lineEnd);
dos.writeBytes(twoHyphens + boundary + lineEnd);
//send image
dos.writeBytes(twoHyphens + boundary + lineEnd); 
dos.writeBytes("Content-Disposition: form-data; name='video_1';filename='"
+ imgs + "'" + lineEnd);
dos.writeBytes(lineEnd);
//create a buffer of  maximum size
bytesAvailable = fileInputStream.available(); 
bufferSize = Math.min(bytesAvailable, maxBufferSize);
buffer = new byte[bufferSize];
//read file and write it into form...
bytesRead = fileInputStream.read(buffer, 0, bufferSize);  
while (bytesRead > 0) {
dos.write(buffer, 0, bufferSize);
bytesAvailable = fileInputStream.available();
bufferSize = Math.min(bytesAvailable, maxBufferSize);
bytesRead = fileInputStream.read(buffer, 0, bufferSize);   
}
//send multipart form data necesssary after file data...
dos.writeBytes(lineEnd);
dos.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd);
//Responses from the server (code and message)
serverResponseCode = conn.getResponseCode();
String serverResponseMessage = conn.getResponseMessage();
Log.i("uploadFile", "HTTP Response is : " 
+ serverResponseMessage + ": " + serverResponseCode);
if(serverResponseCode == 200){
runOnUiThread(new Runnable() {
@SuppressWarnings("deprecation")
public void run() {
try 
{
DataInputStream dataIn = new DataInputStream(conn.getInputStream());
String inputLine;
while ((inputLine = dataIn.readLine()) != null) 
{
result += inputLine;
System.out.println("Result : " + result);
}
JSONObject jobj = new JSONObject(result);
sta = jobj.getString("status");
msg = jobj.getString("msg");
System.out.println(sta + " >>>>>>> " + msg);
} 
catch (Exception e) 
{
e.printStackTrace();
}
Toast.makeText(VideoUpload.this, "" + sta + " : " + msg, 
Toast.LENGTH_SHORT).show();
}
});                
}    
//close the streams //
fileInputStream.close();
dos.flush();
dos.close();
} catch (MalformedURLException ex) {
dialog.dismiss();  
ex.printStackTrace();
runOnUiThread(new Runnable() {
public void run() {
messageText.setText("MalformedURLException Exception : check script url.");
Toast.makeText(VideoUpload.this, "MalformedURLException", Toast.LENGTH_SHORT).show();
}
});
Log.e("Upload file to server", "error: " + ex.getMessage(), ex);  
} catch (Exception e) {
dialog.dismiss();  
e.printStackTrace();
runOnUiThread(new Runnable() {
public void run() {
messageText.setText("Got Exception : see logcat ");
Toast.makeText(VideoUpload.this, "Got Exception : see logcat ", 
Toast.LENGTH_SHORT).show();
}
});
Log.e("Upload file to server Exception", "Exception : " 
+ e.getMessage(), e);  
}
dialog.dismiss();       
return serverResponseCode; 
} //End else block 
} 

OriginalL'auteur Aditya Vyas-Lakhan | 2014-12-31