从先前的ModelAndView访问对象

Question

通过参考链接：如果已修改public ModelAndView sendEmail() {}并说其他对象（例如Collection或HashMap将添加到Model Object中， 那么如何重定向到另一个URI并从先前的public ModelAndView sendEmail() {} 访问对象，那么您将如何在/nextPageclass方法中进行访问？

Answer 1

If possible I would just stick it into the HttpSession object:

    public ModelAndView something(HttpServletRequest request) {
    HttpSession session = request.getSession();
    session.setAttribute("name", "object");
    return new ModelAndView(new RedirectView("nextPageclass"));
}

This should make the values available during the entire user's sessions rather than just on the individual page request. You will end up having to manage the state of Session attributes but this provides a way to make the data available on the next page or any page thereafter without having to consistent get() and set() the value.