Re: how to implement such an action?

[chiu alex]

Geeta:

It looks a little complicated. I tried request.getRequestURL()(or 
getRequestURI).
It doesnot work out. let me illustrate it using an example:

  there is such a line in "whatever.jsp":
  <META HTTP-EQUIV=refresh CONTENT="30; URL=/relative_path/redirect.do">
  here the redirect.do action class make the judgement and decide whether 
forward 
to another link or stay at previous page. but the problem is the 
getRequestURL() in
Redirect Action returns "relative_path/redirect", not the "whatever.jsp" 
something. 
and more if I simply forward page back to "whatever.jsp",there are errors, 
Because in
my struts application, all jsps are generated from some action.do class, 
which do some
logic operation,database operaion,etc. So it really baffle me.

  But I find if the redirect can know the previous request path and 
forward to there, 
that is what I want. That means if whatever.jsp comes from 
"relative_path/preaction.do",
which actually is displayed in the browser's address area, and redirect 
action can forward
to there. It will really work. But it seems very difficult to find them in 
action. I 
thought it's just a simple function. But didn't know it became so difficult 
here. Could 
you have some alternative solution? Thanks. 

Regards
Alex 

From: "Geeta Ramani" <[EMAIL PROTECTED]>
Reply-To: "Struts Users Mailing List" <[EMAIL PROTECTED]>
To: Struts Users Mailing List <[EMAIL PROTECTED]>
Subject: Re: how to implement such an action?
Date: Wed, 17 Mar 2004 11:19:16 -0500
Alex:

Here's an easy way to implement this: Have a hidden variable in each of 
your
jsps which reflects the name of the jsp you are on and use that in your 
action
class to prepare the forward (do you see what i'm saying..? I can 
elaborate if
you'd like..) . You could also use something like request.getRequestURL() 
(I
think this is right..look in the API to be sure..) if you don't want to 
use
hidden variables..

Hope this helps,
Geeta
chiu alex wrote:

> Geeta:
>    Yes, that's the point.This refresh action need to exist in many 
pages.
> looks like it is easy to implement if it can just do a back operation 
in
> that action class when false return. But actually as I know the action
> doesnot provide such operation. So do you have some idea about this?
>
> Regards,
> Alex
>
> >From: "Geeta Ramani" <[EMAIL PROTECTED]>
> >Reply-To: "Struts Users Mailing List" <[EMAIL PROTECTED]>
> >To: Struts Users Mailing List <[EMAIL PROTECTED]>
> >Subject: Re: how to implement such an action?
> >Date: Wed, 17 Mar 2004 07:16:00 -0500
> >
> >Alex:
> >
> >Your initial page is just a jsp, right?  So why would you not use your
> action
> >mapping to say something like if "success then forward to newpage.jsp 
and
> if
> >not forward to samePage.jsp"..?  This will work unless you are using 
this
> >refresh action in many pages..? In which case, you will have to 
"remember
> the
> >page" - and that can be done - but if the simpler solution works, that 
may
> be
> >best, especially since you say you are a newbie..:)
> >
> >Please ignore this note if you have already received emails about your
> >question: our mail server has been *really* slow recently and I can 
see no
> >replies to your question yet..
> >
> >Regards,
> >Geeta
> >
> >chiu alex wrote:
> >
> > > Hello,everyone,
> > >
> > >      I want to implement such an action which is actually activated 
by
> > > within the meta:refresh tag. (that means it will be called every 30
> > > seconds). What the action need to do is to make some judgements. If 
it
> get
> > > true result, it forward to another page, or else it stays at 
previous
> page
> > > and do nothing, so user will see no change. Obviously, action need 
to
> > > remember that page, but I do not know how to put it. I am just a 
newbie
> in
> > > struts.
> > > So could you kindly give me some clue to it. Thanks!
> > >
> > > Alex
> > >
> > > _________________________________________________________________
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