It seems like removeAttribute or setAttribute is not getting rid of the
attribute from request. See below. If I set the value to a random string then I
get a String can't be cast to ActionMapping
exception.
Enumeration<String> attrs = request.getAttributeNames();
while(attrs.hasMoreElements()) {
System.out.println(attrs.nextElement());
}
System.out.println(request.getAttribute("struts.actionMapping"));
request.setAttribute("struts.actionMapping", null);
System.out.println(request.getAttribute("struts.actionMapping"));
Output:
16:05:05,300 INFO [stdout] (default task-13) javax.servlet.forward.context_path
16:05:05,302 INFO [stdout] (default task-13) javax.servlet.forward.servlet_path
16:05:05,303 INFO [stdout] (default task-13) javax.servlet.forward.request_uri
16:05:05,303 INFO [stdout] (default task-13) javax.servlet.forward.path_info
16:05:05,303 INFO [stdout] (default task-13) javax.servlet.forward.query_string
16:05:05,303 INFO [stdout] (default task-13) javax.servlet.request.key_size
16:05:05,303 INFO [stdout] (default task-13) __cleanup_recursion_counter
16:05:05,303 INFO [stdout] (default task-13) javax.servlet.request.cipher_suite
16:05:05,304 INFO [stdout] (default task-13) struts.valueStack
16:05:05,308 INFO [stdout] (default task-13)
javax.servlet.request.ssl_session_id
16:05:09,121 INFO [stdout] (default task-13) ActionMapping{name='Login',
namespace='/', method='null', extension='action', params=null, result=null}
16:05:10,960 INFO [stdout] (default task-13) ActionMapping{name='Login',
namespace='/', method='null', extension='action', params=null, result=null}
On 12/15/2017 02:28 PM, Prasanth Pasala wrote:
> Thanks for the prompt response. Tried removing the attribute from the
> request, but still getting the class cast exception. Is it possible it is
> being set after I have called the forward?
> request.removeAttribute("struts.actionMapping"); // FORWARD THE REQUEST
> ServletContext sContext = context.getContext("/context2");
> RequestDispatcher rd =
> sContext.getRequestDispatcher("/Login.action"); rd.forward(request,
> response); [show/hide original text]
> No it's not a Struts issue. You don't see this in Struts1 because maybe
> it doesn't use any object bounded to dispatched request. But Struts2
> wants to
>
> ActionMapping mapping =
> (ActionMapping)request.getAttribute("struts.actionMapping");
>
> A workaround would be removing object with key "struts.actionMapping"
> from request before dispatching.
>
> I hope this helps.
>
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