是否有任何Java / spring方式使用HttpServletRequest为当前登录用户存储会话信息？

Question

I am wondering if I can set attributes on the HttpServletRequest object.

What I want to do is to store some information for the current logged user that I can later get back (on the same session).

I am using spring mvc.

So far I tried this

@RequestMapping(value = "/url1", method = RequestMethod.GET)
public void test1(final HttpServletRequest req, final ModelMap model) {
    List<String> myList = (List<String>)req.getAttribute("myList");
}

@RequestMapping(value = "/url2", method = RequestMethod.GET)
public void test2(final HttpServletRequest req, final ModelMap model) {
    String message = "hello world";
    List<String> messages = new ArrayList<String>();
    messages.add(messages);
    req.setAttribute("myList", messages);
}

So far, when I make the req.getAttribute I get a null... Any idea?

Answer 1

To setAttribute in session should be used like this:

 request.getSession().setAttribute("myList", messages);

And you can get it like this :

 request.getSession().getAttribute("myList");