protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    String userName = request.getParameter("login");
    String password = request.getParameter("password");

    HttpSession session = request.getSession();

    UsersService usersService = new UsersService();
    int id_user = usersService.getRoleUser(userName, password);
    Calendars calendars = new Calendars();
    if (id_user != 0) {
        Users user = usersService.getUserById(id_user);
        if (user.getRole().equals("user")) {
            session.setAttribute("userName", userName);
            session.setAttribute("name",user.getFio_user());
            session.setAttribute("magazine",user.getMagazine());
            session.setAttribute("id_user", id_user);
            session.setAttribute("date_now", calendars.getNowDate());
            response.sendRedirect("userview/user.jsp");
        }
        if (user.getRole().equals("admin")) {
            response.sendRedirect("adminview/admin.jsp");
        }
    }else
    {
        response.sendRedirect("index.jsp");
    }
}