How to apply filter to 404 's in servlet 2.3?

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How to apply filter to 404 's in servlet 2.3?

How to apply filter to 404 's in servlet 2.3?

2007-08-13 - By jwboring

Back

I would like to have a filter invoked when ever a request comes in that does
not represent a valid page/url (404's). What we are doing now is mapping the
error-code to a jsp page that redirects via <c:redirect url="unknown.req">
(see code below) but of course that is another round trip and therefore not
optimal.

Code:

<filter-mapping>
<filter-name>routerRedirectInputFilter</filter-name>
<url-pattern>/unknown.req</url-pattern>
</filter-mapping>

.....

<error-page>
<error-code>404</error-code>
<location>/rr.jsp</location>
</error-page>

I have tried replacing the c:redirect with a jsp:forward but this does not
invoke the filter. I suspect this is not possible with v2.3 but might be
with v2.4.

Thoughts?
__ ____ ____ _____
Jeff Boring
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