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From "sumit kumar" <tomcatinstallat...@gmail.com>
Subject Re: [OT?] Servlet, redirect and progress-monitoring?
Date Wed, 02 Aug 2006 18:00:51 GMT
hi,
Which web server platform you are using.We have webserver on  Linux. And it
run very fast.Do you have checked memory size allocatement to pdf file


On 8/2/06, Giorgio Corito <giorgio.corito@tele2.it> wrote:
>
> Hi Kristian
> look at http://coldjava.hypermart.net/servlets/waittag.htm
> I hope this will help you.
> Bye
>
> Giorgio
>
> Kristian Rink ha scritto:
> > Hi all,
> >
> > being aware that this is not a question strictly tomcat-relevant,
> > lacking a really good mailing-list for discussions closer to the J2EE
> > background itself, I hope for some input by all the gurus out there.
> >
> > I'm into a situation like this: A servlet gathers statistical
> > information across the data in our DMS, is supposed to make a PDF out of
> > them and send them back to the client who requested them (PDF is
> demanded).
> >
> > Problem, however, is that sometimes these computations take quite some
> > time, leaving me with two situations: (a) The browser itself considers
> > the connection to be "timed out" as the servlet is stuck in doGet() for
> > a bunch of minutes. (b) The user itself considers the connection to be
> > "dead" and closes the browser window. Both situations are uncomfortable.
> >
> >
> > By now, my initial idea was something like that, utilizing two servlets:
> >
> > - Servlet 1 processes the request and immediately redirects the client
> > to another servlet while finishing the calculations and creating the PDF
> > file.
> >
> > - Servlet 2 refreshes, say, each 2 seconds, checking whether the file in
> > question finally has been created and put in place to, then, send this
> > back to the browser.
> >
> >
> > This, however, doesn't work out as Servlet 1, even though sending the
> > Redirect, doesn't redirect until leaving doGet(). So, that's not the
> > solution...
> >
> >
> > My question, now: Is there any "usual" / "best-practise" way of doing
> > something like that, of presenting people with a "please-stand-by" page
> > while there is activity goin' on in background? Is there a way of
> > solving something like this without being in need of JavaScript/AJAX/DWR
> > or something the like?
> >
> > Any hints, even just pointers to good documentation on that issue, are
> > very much appreciated.
> >
> > Thanks and bye,
> > Kristian
> >
> >
> >
>
>
>
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