The link that Joaquin describes is not quite what I want either. I want to
allow the user to go ahead and
continue to work, not wait one minute before they can go on. This seems to
describe a scenario where a 'wait page' would be updated periodically, and
I don't want the user to have to wait at all. Sending an email from within
the action upon completion would work for me as far as notifying the user
about their form submission.
It appears to me that If I can get the response writer to write out my new
page at the beginning of the submission, it would satisfy my requirement.
How can I ensure that the writer is flushed?
https://stripesframework.atlassian.net/wiki/display/STRIPES/Wait+Page+for+Long+Events
On Mon, Jan 25, 2016 at 3:00 AM, <
stripes-users-requ...@lists.sourceforge.net> wrote:
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> Today's Topics:
>
> 1. Re: Writing to response.writer is not working (Joaquin Valdez)
> 2. Re: Infinite loop issue on stripes layout components inside
> jsp tag (Zlatka Mihaylova)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Sat, 23 Jan 2016 11:41:57 -0700
> From: Joaquin Valdez <joaquinfval...@gmail.com>
> Subject: Re: [Stripes-users] Writing to response.writer is not working
> To: r...@rvkb.com, Stripes Users List
> <stripes-users@lists.sourceforge.net>
> Message-ID: <c434177a-267a-42a6-be86-4bf7d6b64...@gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> Hi!
>
> Is this the same idea as this:
>
>
> https://stripesframework.atlassian.net/wiki/display/STRIPES/Wait+Page+for+Long+Events
> ?
>
> Joaquin
>
> > On Jan 23, 2016, at 10:52 AM, VANKEISBELCK Remi <r...@rvkb.com> wrote:
> >
> > Hi again,
> >
> > Seems like a regular "long running job / polling" scenario. It can be
> done with current Stripes version, even if it will be less performant if
> your http client is really non blocking, but that's another story.
> >
> > So here's how I'd do this.
> >
> > 1/ Server side
> >
> > In the ActionBean, I'd submit a task to an executor service (a thread
> pool) with that long running job that calls the webservice. This task
> should update the back-end state in some way, so that you can do polling
> and know when it's done.
> > The same ActionBean can handle Ajax polling via another event method.
> This one will be called from some JS code in your page.
> >
> > public class MyAction implements ActionBean {
> >
> > public Resolution triggerLongRunningJob() {
> > // retrieve Executor Service, from servlet context or custom
> ActionBeanContext
> > ExecutorService executorService = ... ;
> > // submit task
> > executorService.submit(new MyLongRunningTask(...);
> > // return a redirect resolution to the "wait" screen
> > return new RedirectResolution(getClass(), "displayWaitScreen")
> > }
> >
> > public Resolution displayWaitScreen() {
> > return new ForwardResolution("/WEB-INF/jsp/wait-screen.jsp");
> > }
> >
> > public Resolution poll() {
> > // find task completion status and return to the client
> > String jsonTaskCompletion = ... ;
> > return new StreamingResolution("application/json",
> jsonTaskCompletion);
> > }
> >
> >
> > // the long running task code is in a Runnable
> > private class MyLongRunningTask implements Runnable {
> > public void run() {
> > // call the webservice and update internal state
> >
> > }
> > }
> > }
> >
> >
> > 2/ Client side
> >
> > First you'll submit the form to the 'triggerLongRunningJob' event. This
> will launch the background task and return directly.
> > Then, you'll send xhr requests to the 'poll' event, that will tell you
> what to do next. If task has completed, then you'll probably change the
> location of the browser in some way in order to display a "result" page of
> some sort (ie use your data from the completed task and do whatever you
> need with it).
> >
> > HTH
> >
> > R?mi
> >
> >
> >
> >
> >
> > 2016-01-23 17:05 GMT+01:00 Ron King <ronck...@gmail.com>:
> >> Hi everyone,
> >>
> >> I want to write an html page back to the user at the very beginning of
> an ActionBean submit method.
> >> The method calls a web service that takes around a minute to respond,
> and I want to put up a message
> >> before the web service finishes.
> >>
> >> I'm on Tomcat 8. I tried flushing the writer, but the page still
> doesn't display until after I return the
> >> Resolution from the submit method.
> >>
> >> Is there a way to make it write immediately?
> >>
> >> Regards,
> >>
> >> Ron
> >>
> >>
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> >
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> Message: 2
> Date: Mon, 25 Jan 2016 08:45:32 +0000
> From: Zlatka Mihaylova <zla...@chrono24.com>
> Subject: Re: [Stripes-users] Infinite loop issue on stripes layout
> components inside jsp tag
> To: Stripes Users List <stripes-users@lists.sourceforge.net>
> Message-ID: <ca5a61b5677b427c9dfc34af0c2ba...@dox13be02.hex2013.com>
> Content-Type: text/plain; charset="utf-8"
>
> Thank you for the solution. It works.
> Btw, is there a Stripes change log somewhere? I?m interested in the
> changes from the last 7-8 years.
>
> Von: Ben Gunter [mailto:bgun...@cpons.com]
> Gesendet: Mittwoch, 20. Januar 2016 13:12
> An: Stripes Users List <stripes-users@lists.sourceforge.net>
> Betreff: Re: [Stripes-users] Infinite loop issue on stripes layout
> components inside jsp tag
>
> There's no telling when or if this will get fixed. For now, you should be
> able to work around the issue by using the alternative layout tag
> implementation with the following URL in the taglib directive:
>
> <%@ taglib prefix="layout" uri="
> http://stripes.sourceforge.net/stripes-buffered-layout.tld"; %>
>
> On Wed, Jan 20, 2016 at 5:53 AM, Zlatka Mihaylova <zla...@chrono24.com
> <mailto:zla...@chrono24.com>> wrote:
> Hi,
>
> I am stuck on the following problem: with the current stripes version
> 1.6.0 an infinite recursion occurs whenever a <stripes:layout-component> is
> rendered inside a JSP custom tag. It?s pretty much the same issue reported
> here: https://stripesframework.atlassian.net/browse/STS-924 . The
> solution to rewrite all custom tags into JSP includes is working, but
> unclean, since we lose the convenient component encapsulation. This bug
> makes it impossible to use stripes layouts inside custom JSP tags.
>
> One of the stripes framework strengths is in the layout reusability.
> Therefore it would be very helpful if the issue is reopened and fixed. Let
> me know if you need more information or sample program to reproduce the
> problem.
> Kind regards
>
> Zlatka Mihaylova
> Backend-/ Java Developer
>
>
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