How to send key / value pairs with file upload in android

Question

I know this is a recurring question. There are many similar questions in the stack overflow, but I ask this question because I don’t understand how I can send some data using Image.

I want to transfer the first and last name with the image to the server. I have still tried this.

URL connectURL; connectURL = new URL("some URL"); File sdImageMainDirectory = new File("/sdcard"); String existingFileName = sdImageMainDirectory.toString() +"/image.jpg"; String lineEnd = "\r\n"; String twoHyphens = "--"; String boundary = "*****"; String Tag="3rd"; try { HttpURLConnection conn = (HttpURLConnection) connectURL.openConnection(); conn.setDoInput(true); conn.setDoOutput(true); conn.setUseCaches(false); conn.setRequestMethod("POST"); conn.setRequestProperty("Connection", "Keep-Alive"); conn.setRequestProperty("Content-Type", "multipart/form-data;boundary="+boundary); DataOutputStream dos = new DataOutputStream( conn.getOutputStream() ); dos.writeBytes(twoHyphens + boundary + lineEnd); dos.writeBytes("Content-Disposition: form-data; name=\"firstname\"" + lineEnd); dos.writeBytes("Dharmendra"); dos.writeBytes(lineEnd); dos.writeBytes(twoHyphens + boundary + lineEnd); dos.writeBytes("Content-Disposition: form-data; name=\"lastname\"" + lineEnd); dos.writeBytes("Patel"); dos.writeBytes(lineEnd); dos.writeBytes(twoHyphens + boundary + lineEnd); dos.writeBytes("Content-Disposition: form-data; name=\"uploadedfile\";filename=\"" + existingFileName +"\"" + lineEnd); dos.writeBytes("Content-Disposition: form-data; name=\"uploadedfile\";filename=\"" + existingFileName +"\"" + lineEnd); dos.writeBytes(lineEnd); int bytesAvailable = fileInputStream.available(); int maxBufferSize = 1024; int bufferSize = Math.min(bytesAvailable, maxBufferSize); byte[] buffer = new byte[bufferSize]; int 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); } dos.writeBytes(lineEnd); dos.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd); fileInputStream.close(); dos.flush(); dos.close(); }catch (MalformedURLException ex) { Log.e(Tag, "error: " + ex.getMessage(), ex); } catch (IOException ioe) { Log.e(Tag, "error: " + ioe.getMessage(), ioe); } 

Answer 1

Check this code to add additional values ​​to upload the image to the server:

 public class Task_TurnoutPost extends AsyncTask<Void, Void, Void> { private final ProgressDialog dialog = new ProgressDialog(ActivityName.this); JSONObject object_feed; // can use UI thread here protected void onPreExecute() { this.dialog.setMessage("Loading..."); this.dialog.setCancelable(false); this.dialog.show(); } @Override protected Void doInBackground(Void... arg0) { // TODO Auto-generated method stub try { HttpClient httpClient = new DefaultHttpClient(); HttpPost postRequest = new HttpPost("Your LINK"); MultipartEntity reqEntity = new MultipartEntity(HttpMultipartMode.BROWSER_COMPATIBLE); reqEntity.addPart("F_Name", new StringBody("F_Name")); reqEntity.addPart("L_Name",new StringBody("L_NAME")); try{ ByteArrayOutputStream bos = new ByteArrayOutputStream(); bitmap.compress(CompressFormat.JPEG, 75, bos); byte[] data = bos.toByteArray(); ByteArrayBody bab = new ByteArrayBody(data, "forest.jpg"); reqEntity.addPart("picture", bab); }catch(Exception e){ //Log.v("Exception in Image", ""+e); reqEntity.addPart("picture", new StringBody("")); } postRequest.setEntity(reqEntity); HttpResponse response = httpClient.execute(postRequest); BufferedReader reader = new BufferedReader(new InputStreamReader(response.getEntity().getContent(), "UTF-8")); String sResponse; StringBuilder s = new StringBuilder(); while ((sResponse = reader.readLine()) != null) { s = s.append(sResponse); } object_feed = new JSONObject(s.toString()); success_response=object_feed.getString("status"); Log.v("Response for POst", s.toString()); } catch (Exception e) { Log.e("e.getClass().getName()", ""+e); } return null; } @Override protected void onPostExecute(Void result) { if (this.dialog.isShowing()) { this.dialog.dismiss(); } } } 

If the bitmap is your bitmap. In addition to this, add the library and load it

Check this out for reference.

Answer 2

I would use the Http headers here to post key value pairs. Like this

 conn.setRequestProperty("firstName", "Stephen"); conn.setRequestProperty("lastName", "glansburg"); 

Then on your server side, you can just look at the http headers for this meta information.