filter里的代码：

@Override
    public void doFilter(ServletRequest req, ServletResponse resp, FilterChain chain) throws ServletException, IOException {
        HttpServletRequest req2 = (HttpServletRequest) req;
        HttpServletResponse res2 = (HttpServletResponse) resp;
  
        HttpSession session = req2.getSession(true);
        session.setAttribute("loginName1", "sadsadsad");

        chain.doFilter(req2, res2);
    }

Controller里的代码：

  @At("")
    @Ok("beetl:/platform/jyy/index.html")//已修改
    public void index(HttpServletRequest request) {

        Session s  = SecurityUtils.getSubject().getSession();

        String ss = s.getAttribute("loginName1").toString();

报空指针。