java - SessionAttributes 不适用于 spring boot

Question

我在通过 session 保持电子邮件实时数据跨页时遇到问题我已经尝试过了

@Controller
@RequestMapping(value = "/sec")
@SessionAttributes("reset_user_email")
public class SecurityController {}

1. 从“/sec/forget”接收变量

   @RequestMapping(value = "/forget/", method = RequestMethod.POST)
   public ModelAndView forget_page_d(@ModelAttribute User user, ModelAndView mv) 
       throws NoSuchAlgorithmException, InvalidKeyException, IllegalBlockSizeException, BadPaddingException, NoSuchPaddingException, UnsupportedEncodingException, InvalidAlgorithmParameterException
   {
   mv.addObject("user", user);
   
   mv.addObject("reset_user_email", user.getEmail());
   
   //etc
   }
   

2. 在“/sec/forget/user/a”中使用reset_user_email

   @RequestMapping(value = "/forget/user/a", method = RequestMethod.GET)
   public ModelAndView forget_page_p(@ModelAttribute String reset_user_email) {
        ModelAndView mv =new ModelAndView();
   
       mv.setViewName("security/forget_renew");
       mv.addObject("user",reset_user_email);
       System.out.println("a GET user mail = " +reset_user_email);
   

控制台输出:

a GET user mail = 

让我的 reset_user_email 在应用程序中随处可用有什么麻烦？

提前谢谢你

Answer 1

您可以通过以下方式操作 session 属性:

1. 在方法定义中包含一个HttpSession:

   @RequestMapping("/request")
   public ModelAndView getRequest(@ModelAttribute User user, ModelAndView mv, HttpSession session) {
        mv.addObject("reset_user_email", user.getEmail());
   
        session.setAttribute("reset_user_email", user.getEmail());
        String resetUserEmail = session.getAttribute("reset_user_email");         
   }
   

2. 使用 WebUtils 类:

   @RequestMapping("/request")
   public ModelAndView getRequest(@ModelAttribute User user, ModelAndView mv, HttpServletRequest request) {
        mv.addObject("reset_user_email", user.getEmail());
   
        WebUtils.setSessionAttribute(request, "reset_user_email", user.getEmail());
        String resetUserEmail = WebUtils.getSessionAttribute(request, "reset_user_email");  
   }