HttpServletRequest httpRequest = (HttpServletRequest)request;
        HttpSession session = httpRequest.getSession();
        
         if (session.getAttribute("login")!= null ){ 
            chain.doFilter(request,response);
        }  else  {
             if (httpRequest.getRequestURI().equals("/admin/LoginAdminAction.do")){
                request.getRequestDispatcher("/admin/LoginAdminAction.do").forward(request,response);
            }  else  {
                request.getRequestDispatcher("/admin/LoginAdmin.jsp").forward(request,response);
            }
        }
    }