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Я разработал приложение для Android для загрузки файла на сервер PHP. Часть приложения работает нормально и показывает успешную загрузку. Но файл не создается на сервере. Пожалуйста, помогите мне загрузить файл приложения Android на сервер. Есть ли какое-либо другое решение?

Код показан ниже.

Часть Android

  import android.app.ProgressDialog;
 import android.os.Environment;
 import android.support.v7.app.AppCompatActivity;
 import android.os.Bundle;
 import android.util.Log;
 import android.view.View;
 import android.widget.Button;
 import android.widget.TextView;
 import android.widget.Toast;

 import java.io.DataOutputStream;
 import java.io.File;
 import java.io.FileInputStream;
 import java.net.HttpURLConnection;
 import java.net.MalformedURLException;
 import java.net.URL;


 public class MainActivity extends AppCompatActivity {

TextView messageText;
Button uploadButton;
int serverResponseCode = 0;
ProgressDialog dialog = null;

String upLoadServerUri = null;

/**********  File Path *************/
final String uploadFilePath = Environment.getExternalStorageDirectory().getPath()   "/";
final String uploadFileName = "gt.png";

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    uploadButton = (Button) findViewById(R.id.uploadButton);
    messageText = (TextView) findViewById(R.id.messageText);

    messageText.setText("Uploading file path :- "   Environment.getExternalStorageDirectory().getPath()   "/"  uploadFileName);

    /************* Php script path ****************/
    upLoadServerUri = "http://192.168.1.3/work/filesharing/2.php";

    uploadButton.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            dialog = ProgressDialog.show(MainActivity.this, "", "Uploading file...", true);

            new Thread(new Runnable() {
                public void run() {
                    runOnUiThread(new Runnable() {
                        public void run() {
                            messageText.setText("uploading started.....");
                        }
                    });

                    uploadFile(uploadFilePath   ""   uploadFileName);

                }
            }).start();
        }

    });
}

public int uploadFile(String sourceFileUri) {
    String fileName = sourceFileUri;

    HttpURLConnection conn = null;
    DataOutputStream dos = null;
    String lineEnd = "rn";
    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.nn See uploaded file here : nn"
                                 " http://192.168.1.3/work/filesharing/uploads/"
                                 uploadFileName;

                        messageText.setText(msg);
                        Toast.makeText(MainActivity.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(MainActivity.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(MainActivity.this, "Got Exception : see logcat ",
                            Toast.LENGTH_SHORT).show();
                }
            });
            Log.e("LOGTAG","Upload file to server Exception"   "Exception : "   e.getMessage(), e);
        }
        dialog.dismiss();
        return serverResponseCode;

    } // End else block



}
 }
  

PHP-код

 $file_path = "uploads/";

$file_path = $file_path . basename( $_FILES['uploaded_file']['name']);
if(move_uploaded_file($_FILES['uploaded_file']['tmp_name'], $file_path)) {
    echo "success";
} else{
    echo "fail";
}
  

Добавлено разрешение Android в Manifest.xml

 <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.INTERNET"/>
  

Когда я нажимаю кнопку загрузки, она показывает, что загрузка файла завершена.