Hi Dariusz,
Thanks for the input. After some coding and reading in the Struts 2.0.2
sourcecode I got this to work.
In general it seems that Struts2 uses two methods from the request to examine
URI (in this order):
- request.getServletPath()
- request.getRequestURI()
The real trick is, as you suggested, to create my own instance of
HttpServletRequest and implement set-methods for those two, manipulate the
values and pass on the reference to filter.doFilter(req, res). The nice thing
is that there is a javax.servlet.http.HttpServletRequestWrapper class that do a
base implementation of the request. Extend that and implement
setServletPath(String arg0) and setRequestURI(String arg0) methods.
Very nice!
--
Martin Gainty-
Thanks for your input to my question. As you understand of my answer above, a
redirect from an JSP page is way to late in the request sequence. The thing
with keywords is to implement Wiki functionallity into a normal Struts built
website. If a client request http://somesite.com/keyword my filter ask the
WikiEngine if it recognizes the keyword. If it does, I modify the request to my
template.action instead. I store the Wiki keyword as an request attribute to be
picked up and presented by the template. By this I can serve simple easy
editable pages in Wiki format and use Struts for more advanced pages. An
important goal is to hide the redirect for a web browser so when a user
bookmarks a page, the url point to a keyword and not an ugly redirect.
--
Thanks again for the help!
Regards,
Ove Oldberg
> -Ursprungligt meddelande-
> Från: Dariusz Wojtas [mailto:[EMAIL PROTECTED]
> Skickat: den 7 december 2006 09:39
> Till: Struts Users Mailing List
> Ämne: Re: Struts2: How can I make a Filter redirecting to
> struts actions
>
> Hi,
>
> If your filter is called before the struts filter, then what about
> preparing your own HttpServletRequest instance (some wrapper) and
> passing it deeper into doFilter(..)?
> You could copy all properties of the original request but change the
> URI (or whatever property is responsible for it).
> The next filter/servlet would be fooled by this switch and their
> calculations (ie. finding what action should be executed) would be
> done on data prepared by you.
>
> Best regards
> Dariusz Wojtas, Poland
>
> On 12/7/06, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote:
> > Hi everybody,
> > I have experimented with a filter that triggers for keywords on the
> > request URL
> > and when found it should redirect to a struts action that
> processes the
> > keyword.
> >
> > My dilemma is that I don't want to use:
> > response.sendRedirect("/some.action");
> > becoz redirect should be done internally in the servlet
> container, not
> > via browser.
> >
> > I have tested:
> >
> request.getRequestDispatcher("/some.action").forward(request,
> response);
> > and it don't work. I guess becoz an action mapping is not a
> servlet, an
> > JSP page is.
> >
> > Does anyone have an idea how to solve this? Any input welcome!
> >
> > One approach could be to inherit:
> > org.apache.struts2.dispatcher.FilterDispatcher
> > and override doFilter() method and insert my keyword code.
> Kinda ugly
> > thou.
> >
> > Regardings,
> > Ove Oldberg, Sweden.
>
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