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how to get current external URL *on forwarded page*

Joe Tal
Greenhorn

Joined: Mar 06, 2009
Posts: 2
I am seeing something, maybe you can explain this. I think it has
something to do with "external" context..

When I enter my JSF web app, the browser address bar says
"http://myserver.com/jsfapp/index.jsf" for example. I click around in
it, and the address bar doesn't change, even though I am on a
different page, say http://myserver.com/jsfapp/newpage.jsp. (like in
servlet forwarding)

When I am at this newpage.jsp, it has a header tag, and inside the
header tag java class I do this:


then s is "http://myserver.com/jsfapp/index.jsf"

If I do this:



then s is "http://myserver.com/jsfapp/newpage.jsp"

but I want s to be "http://myserver.com/jsfapp/newpage.jsf"

How do I do this?

THANKS

> >> I am inside a JSP tag java file and I want to know the URL of the
> >> request, so I use request.getRequestURL(). But it returns
> >> http://myserver.com/jspapp/myfile.jsp instead of
> >> http://myserver.com/jspapp/myfile.faces or http://myserver.com/myfile.jsf.
> >> In other words, I want the request entered FOR THAT PAGE, not the one
> >> entered by the user in the address bar a few clicks back.
Tim Holloway
Saloon Keeper

Joined: Jun 25, 2001
Posts: 16137
    
  21

JSF is different from other webapp frameworks. The URL isn't so much a direct path to functionality as it is a handle to an ongoing conversation. That's why it doesn't change when you'd like it to.

That can be really irritating, however, when you want something you can bookmark or email to a friend.

A good solution is to use the PrettyFaces package to give you the ability to use direct URLs. It's quite easy to install and configure.

That's half the battle. The other half isn't as obvious - your problem. How do you get the bookmarkable URL presented in the user's browser?

Answer: a little magic in the faces-config file:



The magic is the "redirect" element. That basically causes the request to get routed out and back in again under the external URL you want, unlike the usual action, where the system just does a direct internal transfer to the destination.

It also confers another benefit. The J2EE container security framework doesn't understand the peculiarities of JSF - it maps security against the URL. By using the <redirect> element, the request gets resubmitted under the "proper" URL and the container security screen will be properly applied.


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subject: how to get current external URL *on forwarded page*