JPEG corrompu après l'envoi au serveur

Question

J'essaie d'écrire une application Android qui prend une image utilisateur et la télécharge sur un serveur. Je peux voir l'image sur mon téléphone, mais ne peux pas voir l'image quand je copie le dossier du serveur. J'utilise la librairie Apache commune pour faire des uploads FTP. Le fichier apparaît et la taille est correcte, mais elle ne peut pas être ouverte.

public static void uploadImage(Bitmap bitmap,String path) 
    { 
     String filePath="RENT/images/capture/TESTFILE.jpg"; 
     try 
     { 
     FTPClient client = new FTPClient(); 
      client.connect("MY IP"); 
      client.login("USER", "PWD"); 
      client.enterLocalPassiveMode(); 
      Log.i("aaa","connected: "+client.isConnected()); 
      Log.i("aaa","going to addr: "+client.getRemoteAddress()); 
      FileInputStream fis = new FileInputStream(bitmapToFile(bitmap)); 
      Log.i("aaa","2-starting to upload file"); 
      client.storeFile(filePath, fis); 
      fis.close(); 
      client.logout(); 
      Log.i("aaa","3-file upload complete"); 
     } 
     catch (IOException e) { 
      e.printStackTrace(); 
     } 
    } 
    public static File bitmapToFile(Bitmap bitmap) throws IOException 
    { 
     File outputDir = con.getCacheDir(); 
     File outputFile = File.createTempFile("testFile", ".jpg", outputDir); 


     ByteArrayOutputStream bos = new ByteArrayOutputStream(); 
     bitmap.compress(CompressFormat.JPEG, 90, bos); 
     byte[] bitmapdata = bos.toByteArray(); 

     //write the bytes in file 
     FileOutputStream fos = new FileOutputStream(outputFile); 
     fos.write(bitmapdata); 
     fos.flush(); 
     fos.close(); 

     return outputFile; 
    } 
} 

Answer 1

je trouve une solution. Le code entier (fonctionnant) est ci-dessous: (nécessite des bibliothèques Apache).

import org.apache.commons.net.ftp.FTP; 
import org.apache.commons.net.ftp.FTPClient; 
import org.apache.http.client.ClientProtocolException; 

J'ai utilisé la version 4.0.1 pour ce projet.

public static void uploadImage(String path) 
    { 
     FTPClient ftpClient = new FTPClient(); 
     try { 
      ftpClient.connect("IP"); 
      ftpClient.setFileType(FTP.BINARY_FILE_TYPE); 
      ftpClient.setFileTransferMode(FTP.STREAM_TRANSFER_MODE); 
      ftpClient.setSoTimeout(10000); 
      ftpClient.enterLocalPassiveMode(); 
      if(ftpClient.login("USR", "PWD")) 
      { 
       Log.i("aaa","Path: "+path); 
       File sFile=new File(path); 
       if(!sFile.exists()) 
        Log.i("aaa","file not exist"); 
       FileInputStream fs= new FileInputStream(sFile); 
       String fileName = "xxx.jpg"; 
       Boolean result = ftpClient.storeFile("RENT/images/capture/" + fileName, fs); 
       Log.i("aaa","result: "+result); 
       if(result) 
        new File(path).delete(); 
      } 
     } catch (IOException e) { 
      // TODO Auto-generated catch block 
      e.printStackTrace(); 
     } 
    } 

je devais définir à la fois le ftpClient.fileType et le ftpClient.setFileTransferMode à filetype binaire.

Answer 2

Je ne sais pas exactement le problème ... peut-être le problème de l'image est au format PNG et que vous envoyez au format JPEG ... sinon cela, alors s'il vous plaît vérifier cette méthode ...

int UploadFile publique (String sourceFileUri) {

 String fileName = sourceFileUri; 



     HttpURLConnection conn = null; 

     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 :" 

           +uploadFilePath + "" + uploadFileName); 



      runOnUiThread(new Runnable() { 

       public void run() { 

        messageText.setText("Source File not exist :" 

          +uploadFilePath + "" + uploadFileName); 

       } 

      }); 



      return 0; 



     } 

     else 

     { 

      try { 



       // open a URL connection to the Servlet 

       FileInputStream fileInputStream = new FileInputStream(sourceFile); 

       URL url = new URL(upLoadServerUri); 



       // Open a HTTP connection to the 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("uploaded_file", fileName); 



       dos = new DataOutputStream(conn.getOutputStream()); 



       dos.writeBytes(twoHyphens + boundary + lineEnd); 

       dos.writeBytes("Content-Disposition: form-data; name="uploaded_file";filename="" 

             + fileName + """ + 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() { 

         public void run() { 



          String msg = "File Upload Completed.\n\n See uploaded file here : \n\n" 

              +" http://www.androidexample.com/media/uploads/" 

              +uploadFileName; 



          messageText.setText(msg); 

          Toast.makeText(UploadToServer.this, "File Upload Complete.", 

             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(UploadToServer.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(UploadToServer.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 

    } 

}