Wie wähle ich Dokumente und Bilddateien aus dem internen Speicher und lade sie auf den Server hoch?

Question

Ich möchte die Medien (Bild oder Dokument, entweder im PDF-oder DOCX-Format) Datei aus dem internen Speicher und auf den Server hochladen und zeigen auch die Miniaturansicht der Mediendatei.

Answer 1

Dieser Code würde helfen, die Medien (Bild oder Dokument, entweder im PDF- oder im docx-Format) aus dem internen Speicher hochzuladen und auf den Server hochzuladen.

für die Datei aus dem internen wählen:

@Override 
    protected void onActivityResult(int requestCode, int resultCode, Intent data) { 
     super.onActivityResult(requestCode, resultCode, data); 
     if(resultCode == Activity.RESULT_OK){ 
      if(requestCode == PICK_FILE_REQUEST){ 
       if(data == null){ 
        //no data present 
        return; 
       } 


       Uri selectedFileUri = data.getData(); 
       selectedFilePath = FilePath.getPath(this,selectedFileUri); 
       Log.i(TAG,"Selected File Path:" + selectedFilePath); 

       if(selectedFilePath != null && !selectedFilePath.equals("")){ 
        tvFileName.setText(selectedFilePath); 
       }else{ 
        Toast.makeText(this,"Cannot upload file to server",Toast.LENGTH_SHORT).show(); 
       } 
      } 
     } 
    } 

Laden

public int uploadFile(final String selectedFilePath){ 

     int serverResponseCode = 0; 

     HttpURLConnection connection; 
     DataOutputStream dataOutputStream; 
     String lineEnd = "\r\n"; 
     String twoHyphens = "--"; 
     String boundary = "*****"; 


     int bytesRead,bytesAvailable,bufferSize; 
     byte[] buffer; 
     int maxBufferSize = 1 * 1024 * 1024; 
     File selectedFile = new File(selectedFilePath); 


     String[] parts = selectedFilePath.split("/"); 
     final String fileName = parts[parts.length-1]; 

     if (!selectedFile.isFile()){ 
      dialog.dismiss(); 

      runOnUiThread(new Runnable() { 
       @Override 
       public void run() { 
        tvFileName.setText("Source File Doesn't Exist: " + selectedFilePath); 
       } 
      }); 
      return 0; 
     }else{ 
      try{ 
       FileInputStream fileInputStream = new FileInputStream(selectedFile); 
       URL url = new URL(SERVER_URL); 
       connection = (HttpURLConnection) url.openConnection(); 
       connection.setDoInput(true);//Allow Inputs 
       connection.setDoOutput(true);//Allow Outputs 
       connection.setUseCaches(false);//Don't use a cached Copy 
       connection.setRequestMethod("POST"); 
       connection.setRequestProperty("Connection", "Keep-Alive"); 
       connection.setRequestProperty("ENCTYPE", "multipart/form-data"); 
       connection.setRequestProperty("Content-Type", "multipart/form-data;boundary=" + boundary); 
       connection.setRequestProperty("uploaded_file",selectedFilePath); 

       //creating new dataoutputstream 
       dataOutputStream = new DataOutputStream(connection.getOutputStream()); 

       //writing bytes to data outputstream 
       dataOutputStream.writeBytes(twoHyphens + boundary + lineEnd); 
       dataOutputStream.writeBytes("Content-Disposition: form-data; name=\"uploaded_file\";filename=\"" 
         + selectedFilePath + "\"" + lineEnd); 

       dataOutputStream.writeBytes(lineEnd); 

       //returns no. of bytes present in fileInputStream 
       bytesAvailable = fileInputStream.available(); 
       //selecting the buffer size as minimum of available bytes or 1 MB 
       bufferSize = Math.min(bytesAvailable,maxBufferSize); 
       //setting the buffer as byte array of size of bufferSize 
       buffer = new byte[bufferSize]; 

       //reads bytes from FileInputStream(from 0th index of buffer to buffersize) 
       bytesRead = fileInputStream.read(buffer,0,bufferSize); 

       //loop repeats till bytesRead = -1, i.e., no bytes are left to read 
       while (bytesRead > 0){ 
        //write the bytes read from inputstream 
        dataOutputStream.write(buffer,0,bufferSize); 
        bytesAvailable = fileInputStream.available(); 
        bufferSize = Math.min(bytesAvailable,maxBufferSize); 
        bytesRead = fileInputStream.read(buffer,0,bufferSize); 
       } 

       dataOutputStream.writeBytes(lineEnd); 
       dataOutputStream.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd); 

       serverResponseCode = connection.getResponseCode(); 
       String serverResponseMessage = connection.getResponseMessage(); 

       Log.i(TAG, "Server Response is: " + serverResponseMessage + ": " + serverResponseCode); 

       //response code of 200 indicates the server status OK 
       if(serverResponseCode == 200){ 
        runOnUiThread(new Runnable() { 
         @Override 
         public void run() { 
          tvFileName.setText("File Upload completed.\n\n You can see the uploaded file here: \n\n" + "http://coderefer.com/extras/uploads/"+ fileName); 
         } 
        }); 
       } 

       //closing the input and output streams 
       fileInputStream.close(); 
       dataOutputStream.flush(); 
       dataOutputStream.close(); 



      } catch (FileNotFoundException e) { 
       e.printStackTrace(); 
       runOnUiThread(new Runnable() { 
        @Override 
        public void run() { 
         Toast.makeText(NewClassPdf.this,"File Not Found",Toast.LENGTH_SHORT).show(); 
        } 
       }); 
      } catch (MalformedURLException e) { 
       e.printStackTrace(); 
       Toast.makeText(NewClassPdf.this, "URL error!", Toast.LENGTH_SHORT).show(); 

      } catch (IOException e) { 
       e.printStackTrace(); 
       Toast.makeText(NewClassPdf.this, "Cannot Read/Write File!", Toast.LENGTH_SHORT).show(); 
      } 
      dialog.dismiss(); 
      return serverResponseCode; 
     } 

    } 

die Datei zum Server:

Intent intent = new Intent(); 
     //sets the select file to all types of files 
     intent.setType("*/*"); 
     //allows to select data and return it 
     intent.setAction(Intent.ACTION_GET_CONTENT); 
     //starts new activity to select file and return data 
     startActivityForResult(Intent.createChooser(intent,"Choose File to Upload.."),PICK_FILE_REQUEST); 

die Datei ab,

Dieser Code hilft mir, die Datei auf den Server (alle Dateien) hochzuladen.