How to send image to web server?

Send image to web server and receive information

• I am new to android and java so please bear with me with the incorrect terms used. I am programming an application that helps to identify the location with an image. Capture image from camera Send captured image to a web server Listen and receive information from the web server regarding the location of the captured image and display to user. Hence main problems are: Send image to web server Receive information from web server

• Answer:

  I use this method (which i got from somewhere, but dont know where from), it works for me: private void doFileUpload() { HttpURLConnection conn = null; DataOutputStream dos = null; DataInputStream inStream = null; String lineEnd = "\r\n"; String twoHyphens = "--"; String boundary = "*****"; int bytesRead, bytesAvailable, bufferSize; byte[] buffer; int maxBufferSize = 1 * 1024 * 1024; //size of your image String responseFromServer = ""; String urlString = "http://yourwebserver/receiver.php"; try { // ------------------ CLIENT REQUEST FileInputStream fileInputStream = new FileInputStream(new File( mFileName)); // open a URL connection to the Servlet URL url = new URL(urlString); // Open a HTTP connection to the URL conn = (HttpURLConnection) url.openConnection(); // Allow Inputs conn.setDoInput(true); // Allow Outputs conn.setDoOutput(true); // Don't use a cached copy. conn.setUseCaches(false); // Use a post method. conn.setRequestMethod("POST"); conn.setRequestProperty("Connection", "Keep-Alive"); conn.setRequestProperty("Content-Type", "multipart/form-data;boundary=" + boundary); dos = new DataOutputStream(conn.getOutputStream()); dos.writeBytes(twoHyphens + boundary + lineEnd); dos.writeBytes("Content-Disposition: form-data; name=\"uploadedfile\";filename=\"" + mFileName + "\"" + 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); // close streams Log.e("Debug", "File is written"); fileInputStream.close(); dos.flush(); dos.close(); } catch (MalformedURLException ex) { Log.e("Debug", "error: " + ex.getMessage(), ex); } catch (IOException ioe) { Log.e("Debug", "error: " + ioe.getMessage(), ioe); } // ------------------ read the SERVER RESPONSE try { inStream = new DataInputStream(conn.getInputStream()); String str; while ((str = inStream.readLine()) != null) { Log.e("Debug", "Server Response " + str); } inStream.close(); } catch (IOException ioex) { Log.e("Debug", "error: " + ioex.getMessage(), ioex); } } The file will in $_FILES array on your webserver.