Spring MVC 3: Interceptor return view on false

Question

I'm using an interceptor to restrict access to certain users in the app. For instance:

@Override
public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception
{
    Logger.logRequest(request);
    return list.contains(user);
}

If the list contains the user, it completes the request. Otherwise, it does nothing.

How do I display a custom page if the user doesn't have access? Right now, if it's false, it just shows a blank page which is not great for user experience.

You can use a RequestDispatcher from the request to forward to some jsp. Or you can send a redirect. — Sotirios Delimanolis, Mar 28 '13 at 20:03

score 8 · Accepted Answer · answered Mar 28 '13 at 20:09

8

It looks like you can do a response redirect without hitting the servlet. The following works:

    if (list.contains(user))
        return true;
    else
    {
        //set up the view
        response.sendRedirect("nope_view");
        return false;
    }

answered Mar 28 '13 at 20:09

Jason

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Careful with the naming. The String you pass to the redirect isn't a view name, but actually makes a new request. – Sotirios Delimanolis Mar 28 '13 at 20:10
Thanks for the reminder. I'll have to redirect to another servlet or static view. – Jason Mar 28 '13 at 20:14

Spring MVC 3: Interceptor return view on false

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