[Web, Java, Servlet, JSP] Запрос POST без формы

public class PassPost extends HttpServlet {

    public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

        HttpSession session;
        String encoding;
        String urlAddress;
        URL url;
        HttpURLConnection httpURLConnection;
        StringBuilder sbContent;
        DataOutputStream stream;
        InputStream inputStream;

        // Getting current session
        session = request.getSession();

        // Setting encoding to unicode
        encoding = "UTF-8";

        // Creating URL
        urlAddress = "http://localhost:8080/page.jsp";
        url = new URL(urlAddress);

        // Http URL connection
        httpURLConnection = (HttpURLConnection)url.openConnection();
        httpURLConnection.setUseCaches(false);
        httpURLConnection.setDoOutput(true);
        httpURLConnection.setDoInput(true);
        httpURLConnection.setRequestMethod("POST");
        httpURLConnection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");

        // String builder
        sbContent = new StringBuilder();
        sbContent.append("numid=");
        sbContent.append(URLEncoder.encode(session.getAttribute("numid").toString(), encoding));

        // Data output stream
        stream = new DataOutputStream(httpURLConnection.getOutputStream ());
        stream.writeBytes(sbContent.toString());
        stream.flush();
        stream.close();

        // Input stream
        inputStream = httpURLConnection.getInputStream();
        inputStream.close();
        response.sendRedirect(urlAddress);

    }

    public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

        doGet(request, response);

    }

}