ok, I quickly pulled this out of a filter that I use for the same purpose.
It may not compile, but should be very close. See the filter examples that
come with tomcat for the complete filter and this is a sample of how to do
what you want.
also create a mapping in web.xml for your static files/directories that this
filter should run against.
Charlie
public void doFilter(ServletRequest req, ServletResponse resp,
FilterChain chain)
throws IOException, ServletException
{
//convert ServletRequest to HttpServletRequest so that we
can use the extended features
HttpServletRequest myReq = null;
if (req instanceof HttpServletRequest)
{
myReq = (HttpServletRequest)req;
}
//convert ServletResponse to HttpServletResponse so that we
can use the extended features
HttpServletResponse myResp = null;
if (resp instanceof HttpServletResponse)
{
myResp = (HttpServletResponse)resp;
}
// the rest of this filter depends on HttpServletRequest and
HttpServletResponse, so if we don't have a valid one, exit here.
if (myResp == null || myReq == null)
{
chain.doFilter(req, resp);
return;
}
HttpSession sess = myReq.getSession(false);
if (sess.getAttribute("Something") == null)
{
RequestDispatcher rd =
m_filterConfig.getServletContext().getRequestDispatcher("/jsp/MyForm.jsp");
if (rd != null)
rd.forward(req,resp);
return;
}
chain.doFilter(req,resp);
}
> -----Original Message-----
> From: Lars Nielsen Lind [mailto:[EMAIL PROTECTED]]
> Sent: Wednesday, July 17, 2002 5:34 PM
> To: Tomcat Users List
> Subject: Re: Hide download file
>
>
> Cox, Charlie wrote:
>
> >I just answered this last week. Use a filter that checks the
> session and
> >leave your download files in a directory under webapps.
> Filters make this
> >simple. Don't do any more work than you need to :)
> >
> >Charlie
> >
> >>>
> >>I have found an article at www.javaworld.com about witing
> >>servlets for
> >>downloading non-html documents
> >>(http://www.javaworld.com/javatips/jw-javatip94_p.html).
> >>
> >>But I want to control the access to the file download
> component with
> >>session variables. The user is given the right session
> >>variables when he
> >>fills out the download form.
> >>
> >>Best regards,
> >>
> >>Lars Nielsen Lind
> >>
> >>
> >>
> >>
> >>--
> >>To unsubscribe, e-mail:
> >><mailto:[EMAIL PROTECTED]>
> >>For additional commands, e-mail:
> >><mailto:[EMAIL PROTECTED]>
> >>
> >
> >--
> >To unsubscribe, e-mail:
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>
>
Do you have some examples of user-defined filters for handling session
variable defined access to download file(s)?
Best regards,
Lars Nielsen Lind
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