SessionAttributes不能与spring boot一起使用

Question

I have face problem to keep email a live data cross pages via session I have try this

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

1. Receive variable from "/sec/forget"

    @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. Using reset_user_email in "/sec/forget/user/a"

    @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); 

Console Output :

a GET user mail = 

what is messing to keep my reset_user_email available everywhere in application ?

Thank you in advance

Answer 1

You can manipulate the session attributes by:

1. including the a HttpSession in the method definition:

    @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. Use WebUtils class:

    @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"); } 

Answer 2

Instead of ModelAndView, Try java.util.Map, try to put session values in Map, by map.put("your session name",value);

and try to get a value by String email=(String)map.get("your session name");