Christopher Becker wrote:
We have a struts app (v1.2.7) that uses Tiles for UI presentation,
running in WebLogic 8.1. We are trying to implement a form whose action
is to a remote servlet. The remote site actually generated the form
details for us, and one of the fields provided is a hidden field
entitled returnURL, which allows me to provide a URL to a page within my
web app.
That sounds eerily familiar ;-)
When the form is submitted, the remote servlet returns to the URL
specified in the returnURL parameter, but the user session is lost and
the relative links for images in the tiles layout disappear.
What do you mean, 'the remote server returns to' the URL? Does it send
the browser a redirect, or load the URL and proxy the result back to the
browser?
I can't think why relative URLs in your tiles would break unless the URL
you're passing to the remote servlet is incorrect, or your URLs are
built using session data that's missing due to the session tracking
problems you're seeing.
We have tried appending the session id to the URL sent in the hidden
returnURL of the form, but this did not work. We then changed from URL
rewriting to cookies for handling session state, but this also did not
work.
Does anyone have any ideas on how to maintain session state when
posting to a remote servlet?
The key is retaining session state when you come *back* from the remote
servlet. And that depends on how the return is handled. Assuming the
remote servlet sends a browser redirect -- so that the browser is making
a fresh request to your application -- either URL rewriting or cookies
should work fine.
You might want to try using a packet sniffer to monitor exactly what
HTTP requests are being sent between the browser, your app and the
remote app. That might give a clue as to where in the chain things are
getting out of sync.
L.
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