Android导出的数据库已损坏

Question

我们有一台Android，我们正在将备份数据库发送到Web服务器，以便在服务器上进行备份。

问题是服务器收到的文件没有扩展名，而且已损坏！

bouton_export.setOnClickListener(new OnClickListener() {
                    @Override
                    public void onClick(View v) {
                            //ContextWrapper contextWrapper = new ContextWrapper(getBaseContext());
                            new Thread(new Runnable() {

                                    @Override
                                    public void run() {
                                            // TODO Auto-generated method stub
                                            File file = new File("data/data/fr.univtours.appelsuaps/databases/Appel.db");

                                            FileBody fileBody = new FileBody(file);

                                            HttpClient client = new DefaultHttpClient();
                                            HttpPost httpPost = new HttpPost("http://www.quentinlozach.com/get_database.php");

                                            MultipartEntity reqEntity = new MultipartEntity(HttpMultipartMode.BROWSER_COMPATIBLE);
                                            reqEntity.addPart("file", fileBody);
                                    httpPost.setEntity(reqEntity);
                                    HttpResponse response = null;
                                            try {
                                                    response = client.execute(httpPost);
                                            } catch (ClientProtocolException e) {
                                                    // TODO Auto-generated catch block
                                                    e.printStackTrace();
                                            } catch (IOException e) {
                                                    // TODO Auto-generated catch block
                                                    e.printStackTrace();
                                            }

                                    if((response.getStatusLine().toString()).equals("HTTP/1.1 200 OK")){
                                        // Successfully Uploaded
                                        Log.i("uploaded", response.getStatusLine().toString());
                                    }
                                    else{
                                        // Did not upload. Add your logic here. Maybe you want to retry.
                                        Log.i(" not uploaded", response.getStatusLine().toString());
                                    }
                                    }
                            }).start();

                    }

知道它来自哪里？

感谢。