Question

我遇到问题，要通过会话保持电子邮件实时数据跨页面我已经尝试过这个

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

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
}

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在应用程序的任何地方都可用时会出现什么问题？

提前谢谢

Answer 1

您可以通过以下方式操纵会话属性：

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");         
}

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");  
}

Answer 2

尝试java.util.Map，而不是ModelAndView，尝试将会话值放在Map中，map.put("your session name",value);

并尝试按String email=(String)map.get("your session name");

获取值

SessionAttributes不能与spring boot一起使用

2 个答案: