public void doGet(HttpServletRequest request, HttpServletResponse response)
    throws IOException, ServletException
  {  
	InputStreamReader isr = new InputStreamReader(request.getInputStream());
	BufferedReader buff = new BufferedReader(isr);
    StringBuffer strBuff = new StringBuffer();
	String s;
    while (( s = buff.readLine()) != null ) 
	{
		strBuff.append(s);
    }

    String strRequest = strBuff.toString();
    FileOutputStream fos = new FileOutputStream("c:\\temp\\cl_request.xml");
    fos.write(strRequest.getBytes("UTF-8"));
    fos.flush();
	fos.close();

    // отправка ответа
    byte[] arResponse = makeResponse();

   
    OutputStream outputStream = response.getOutputStream();
    outputStream.write(arResponse);
    outputStream.flush();
    outputStream.close();
  }

  public static void main(String[] args)
    throws Exception
  {
      URL server = new URL("http://127.0.0.1:8080/apps/servlet/TestServer");
      HttpURLConnection conn = (HttpURLConnection)server.openConnection();
    byte[] request = makeRequest();

    conn.setDoOutput(true);        
    //conn.setRequestProperty("Host", "127.0.0.1");        
    //conn.setRequestProperty("Content-Type", "text/xml; charset=utf-8");        
    //conn.connect();
	
    OutputStream outputStream = conn.getOutputStream();
    outputStream.write(request);
    outputStream.flush();
    outputStream.close();
	
    // ответ сервлета
    String strResponse = readResponse(conn.getInputStream());
	
    FileOutputStream fos = new FileOutputStream("c:\\temp\\srv_response.xml");
    fos.write(strResponse.getBytes("UTF-8"));
    fos.flush();
    fos.close();
  }

  private static byte[] makeRequest() throws IOException 
  {
    FileInputStream input = new FileInputStream("c:\\temp\\cl_send.xml");
    ByteArrayOutputStream output = new ByteArrayOutputStream();
    byte[] buffer = new byte[4096];
    int n;
    while (-1 != (n = input.read(buffer)))
    {
      output.write(buffer, 0, n);
    }
	input.close();
    output.write("\r\n".getBytes());
    
    return output.toByteArray();
  }

  private static String readResponse(InputStream input) throws IOException {
    StringBuffer result = new StringBuffer();
    while (true) {
      String s = readResponseLine(input, "UTF-8");
      if (s == null) break;
      result.append(s);
    }
    return result.toString();
  }

  private static String readResponseLine(InputStream is, String enc) throws IOException {
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    int i;
    while ((i = is.read()) != -1)
    {
      if (i == 10) break;
      if (i != 13)
        baos.write(i);
    }
    baos.flush();
    baos.close();
    byte[] buf = baos.toByteArray();
    if ((buf.length == 0) && (i == -1)) {
      return null;
    }
    return new String(buf, enc);
  }