I am doing a project in which I need to upload an image to a server using a URL. But when I upload the file, the file is damaged on the server, when I open the file, the error message "file damaged" appears. How can I solve this problem.
Here is my code:
String lineEnd = "\r\n"; String twoHyphens = "--"; String boundary = "*****"; try { // ------------------ CLIENT REQUEST Log.e("Upload", "Inside second Method"); FileInputStream fileInputStream = new FileInputStream(new File(sel_img_name)); // open a URL connection to the Servlet URL url = new URL(IpAddress+"ImageUpload/"+token+"/"+name_sel_image+"%7C"+extension); // 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); DataOutputStream dos = new DataOutputStream(conn.getOutputStream()); dos.writeBytes(twoHyphens + boundary + lineEnd); dos.writeBytes("Content-Disposition: post-data; name=uploadedfile;filename=" + name_sel_image + "" + lineEnd); dos.writeBytes(lineEnd); //Log.e(Tag, "Headers are written"); // create a buffer of maximum size int bytesAvailable = fileInputStream.available(); int maxBufferSize = 1000; // int bufferSize = Math.min(bytesAvailable, maxBufferSize); byte[] buffer = new byte[bytesAvailable]; // read file and write it into form... int bytesRead = fileInputStream.read(buffer, 0, bytesAvailable); while (bytesRead > 0) { dos.write(buffer, 0, bytesAvailable); bytesAvailable = fileInputStream.available(); bytesAvailable = Math.min(bytesAvailable, maxBufferSize); bytesRead = fileInputStream.read(buffer, 0, bytesAvailable); } // send multipart form data necesssary after file data... dos.writeBytes(lineEnd); dos.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd); // close streams //Log.e(Tag, "File is written"); 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); } try { BufferedReader rd = new BufferedReader(new InputStreamReader(conn.getInputStream())); String line; while ((line = rd.readLine()) != null) { Log.i("Response", line); } rd.close(); } catch (IOException ioex) { Log.e("MediaPlayer", "error: " + ioex.getMessage(), ioex); }
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