Schreiben Sie eine Textdatei auf den PHP-Server von Android erstellt leere Textdatei?

Question

Ich schreibe erfolgreich die Textdatei von (json_string) in den internen Speicher von Android-Handy, aber die gleiche Datei, die ich auf PHP-Server schreibe, wird leer hochgeladen. Bitte sehen Sie meinen Code unten und lassen Sie mich wissen, wo liege ich falsch? Bitte helfen Sie mir Ich bin neu in PHP und Android.

public class MainActivity extends AppCompatActivity { 
    private static final String TAG = "MainActivity.java"; 
    private static final int SURVEY_REQUEST = 1337; 
    private static final int REQUEST_EXTERNAL_STORAGE = 1; 
    private static String[] PERMISSIONS_STORAGE = { 
      Manifest.permission.READ_EXTERNAL_STORAGE, 
      Manifest.permission.WRITE_EXTERNAL_STORAGE 
    }; 
    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 
     if (android.os.Build.VERSION.SDK_INT > 9) { 
      StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build(); 
      StrictMode.setThreadPolicy(policy); 
     } 
     verifyStoragePermissions(this); // for permission in marshallow and up operating system 


     //buttons 

     Button button_survey_example_1 = (Button) findViewById(R.id.button_survey_example_1); 

     button_survey_example_1.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View v) { 

       Intent i_survey = new Intent(MainActivity.this, SurveyActivity.class); 
       //you have to pass as an extra the json string. 
       i_survey.putExtra("json_survey", loadSurveyJson("feedback1.json")); 
       startActivityForResult(i_survey, SURVEY_REQUEST); 
      } 
     }); 

    } 

    public static void verifyStoragePermissions(Activity activity) { 
     // Check if we have read or write permission 
     int writePermission = ActivityCompat.checkSelfPermission(activity, Manifest.permission.WRITE_EXTERNAL_STORAGE); 
     int readPermission = ActivityCompat.checkSelfPermission(activity, Manifest.permission.READ_EXTERNAL_STORAGE); 

     if (writePermission != PackageManager.PERMISSION_GRANTED || readPermission != PackageManager.PERMISSION_GRANTED) { 
      // We don't have permission so prompt the user 
      ActivityCompat.requestPermissions(
        activity, 
        PERMISSIONS_STORAGE, 
        REQUEST_EXTERNAL_STORAGE 
      ); 
     } 
    } 
    @Override 
    protected void onActivityResult(int requestCode, int resultCode, Intent data) { 
     File file = null; 
     if (requestCode == SURVEY_REQUEST) { 
      if (resultCode == RESULT_OK) { 

       String answers_json = data.getExtras().getString("answers"); 
       Log.d("****", "****************** WE HAVE ANSWERS ******************"); 
       final int v = Log.v("ANSWERS JSON", answers_json); 
       Log.d("****", "*****************************************************"); 



       final File path = 
         Environment.getExternalStoragePublicDirectory 
           (
             //Environment.DIRECTORY_PICTURES 
             Environment.DIRECTORY_DOWNLOADS + "/QA/" 
           ); 


       if (!path.exists()) { 
        // Make it, if it doesn't exit 
        path.mkdirs(); 
       } 


       Date date = new Date(); 


       file = new File(path, date + ".txt"); 

       JsonFlattener parser = new JsonFlattener(); 
       CSVWriter writer = new CSVWriter(); 

       List<Map<String, String>> flatJson = null; 

       try { 
        flatJson = parser.parseJson(answers_json); 
       } catch (Exception e) { 
        e.printStackTrace(); 
       } 
       try { 
        writer.writeAsCSV(flatJson, path + " " + date + ".csv"); 
        // file = new File(path, date + ".csv"); 
       } catch (FileNotFoundException e) { 
        e.printStackTrace(); 
       } 


       try { 
        file.createNewFile(); 
        FileOutputStream fOut = new FileOutputStream(file); 
        OutputStreamWriter myOutWriter = new OutputStreamWriter(fOut); 
        myOutWriter.append(answers_json); 

        MultipartEntityBuilder builder = MultipartEntityBuilder.create(); 

        builder.setMode(HttpMultipartMode.BROWSER_COMPATIBLE); 

        FileBody fileBody = new FileBody(file); 
        builder.addPart("file", fileBody); 

        HttpEntity reqEntity = builder.build(); 


        URL url = null; 
        try { 
         url = new URL("http://localhost/UploadToServer.php"); 
        } catch (MalformedURLException e) { 
         e.printStackTrace(); 
        } 
        HttpURLConnection conn = null; 
        try { 
         conn = (HttpURLConnection) url.openConnection(); 
        } catch (IOException e) { 
         e.printStackTrace(); 
        } 

        conn.setReadTimeout(10000); 
        conn.setConnectTimeout(15000); 
        conn.setRequestMethod("POST"); 
        conn.setUseCaches(false); 
        conn.setDoInput(true); 
        conn.setDoOutput(true); 
        conn.setRequestProperty("Connection", "Keep-Alive"); 
        conn.addRequestProperty("Content-length", reqEntity.getContentLength()+""); 
        conn.addRequestProperty(reqEntity.getContentType().getName(), reqEntity.getContentType().getValue()); 
        OutputStream os = conn.getOutputStream(); 
        reqEntity.writeTo(conn.getOutputStream()); 
        os.flush(); 
        os.close(); 

        conn.connect(); 

        if (conn.getResponseCode() == HttpURLConnection.HTTP_OK) { 
         Log.d("UPLOAD", "HTTP 200 OK."); 
         return readStream(conn.getInputStream(In)); 
         This return returns the response from the upload. 
        } else { 
         Log.d("UPLOAD", "HTTP "+conn.getResponseCode()+" "+conn.getResponseMessage()+"."); 
         String stream = readStream(conn.getInputStream()); 
         Log.d("UPLOAD", "Response: "+stream); 
         return stream; 
        } 


        AlertDialog.Builder dlgAlert = new AlertDialog.Builder(this, R.style.MyDialogTheme); 
        dlgAlert.setMessage("Thank you for your time"); 
        dlgAlert.setTitle("QA APP"); 
        dlgAlert.setPositiveButton("Ok", null); 
        dlgAlert.setCancelable(true); 
        dlgAlert.create().show(); 

        myOutWriter.close(); 


        fOut.flush(); 
        fOut.close(); 


       } catch (IOException e) { 
        Log.e("Exception", "File write failed: " + e.toString()); 
       } 






      } 
     } 
    } 

Und mein PHP-Code ist

 <?php 
    $name  = $_FILES['file']['name']; 
    $temp_name = $_FILES['file']['tmp_name']; 
    if(isset($name)){ 
     if(!empty($name)){  
      $location = 'upload/';  
      if(move_uploaded_file($temp_name, $location.$name)){ 
       echo 'File uploaded successfully'; 
      } 
     }  
    } 
else { 
     echo 'failed !!'; 
    } 
?> 

Answer 1

ich es Jungs haben. Ich hatte das OutStreamWriter zu spülen, bevor ich die Verbindung nun beginnen sollte

file.createNewFile(); 
       FileOutputStream fOut = new FileOutputStream(file); 
       OutputStreamWriter myOutWriter = new OutputStreamWriter(fOut); 
       myOutWriter.append(answers_json); 


       myOutWriter.close(); 

       fOut.flush(); 
       fOut.close(); 

es funktioniert ganz gut. Danke für diese Plattform.