url = new URL(transfer_Url);
сonnection = (HttpURLConnection)url.openConnection();
connection.setRequestMethod("POST");
connection.setRequestProperty("Content-Type", "text/xml;charset=UTF-8");
connection.setRequestProperty("Content-Length", "" + Integer.toString(xmlFile.getBytes().length));
connection.setUseCaches(false);
connection.setDoInput(true);
connection.setDoOutput(true);
DataOutputStream wr = new DataOutputStream(connection.getOutputStream());
wr.writeBytes(xmlFile));// здес тоже попробыал задать кодировку не помогло UTF-8, ISO-8859-1, windows-1251
wr.flush();
wr.close();