public   void  doGet(HttpServletRequest request, HttpServletResponse response)
         throws  ServletException, IOException {
            String htmlText = "";
            String p1 = request.getParameter("logintext");
            String p2 = request.getParameter("passtext");

            dbinit(htmlText);
            String UserNameText = CheckLogins(p1, p2);

            response.setContentType("text/html");
            PrintWriter out = response.getWriter();


             if  (UserNameText == "") {
              out.println("Unknown user!");
            }  else  {
                response.sendRedirect(request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+request.getContextPath() +"/gtd_mainpage.jsp");
                }

        }