How can I bind JSP page and session scoped field of the controller?

Question

I have a simple controller with scope annotation.

@Controller
@Scope("session")
@RequestMapping("/")
public class HelloController {

    private User user = new User("Bob");

    @RequestMapping(method = RequestMethod.GET)
    public String printWelcome() {
        return "hello";
    }
}

and simple jsp page

<html>
<body>
    <h1>Y=${sessionScope.user}</h1>
    <h1>Z=${user}</h1>
</body>
</html>

But when I'm trying to run this code, I'm getting nothing. The result is empty. I don't want to use single beans of User, also I don't like to pass object of HttpSession to method in controller or HttpServletRequest object for retrieving session from it. Is there any solution for using some annotation (except @SessionAttributes) to pass object to jsp from my controller?

From your given code, you don't have any `sessionScope` attribute in any scope to be found: page, request, session, application. Instead, you may have a `${helloController}` if ever initialized. — Luiggi Mendoza, Mar 17 '14 at 15:37
You may consider the answers submitted to this question http://stackoverflow.com/questions/13276391/spring-3-mvc-expose-session-scoped-bean-in-mvc-controller-method-arguments — user3360944, Mar 17 '14 at 16:16

score 1 · Accepted Answer · answered Mar 17 '14 at 16:36

1

I don't see why you are surprised. The only thing in your code that is in the HttpSession is the @Controller bean.

Just because that object has a field of type User doesn't mean there will be a User attribute in the HttpSession.

The result is empty. I don't want to use single beans of User, also I don't like to pass object of HttpSession to method in controller or HttpServletRequest object for retrieving session from it. Is there any solution for using some annotation (except @SessionAttributes) to pass object to jsp from my controller?

You've basically listed all your options. Use any of those.

answered Mar 17 '14 at 16:36

Sotirios Delimanolis

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I thought there are another options. – user3279337 Mar 17 '14 at 18:19
@user3279337 You could always make one yourself, Spring is customizable that way. But somewhere down the line you will need to call `HttpSession#setAttribute(..)`. – Sotirios Delimanolis Mar 17 '14 at 18:21

How can I bind JSP page and session scoped field of the controller?

1 Answers1