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August 30, 2008 02:04am pdt
 
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Singling out the root document (/) in a web.xml <url-pattern> mapping

Tags: root, url
I am adding a filter to a web.xml file.  I would like it to trigger for the root index file (domain.com/index.xhtml).
However, the way our server redirects to the index page, it will not also trigger for the root directory (domain.com/) unless explicitly told to.  As "/" is defined as the default mapping and matches all requests, how do I define a url-pattern mapping to the root directory?
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Question Stats
Zone: Programming
Question Asked By: skatc2
Solution Provided By: Venabili
Participating Experts: 4
Solution Grade: A
Views: 87
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[+][-]Expert Comment by TomasHelgi
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[+][-]Author Comment by skatc2
Author Comment by skatc2:

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[+][-]Expert Comment by mrcoffee365

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[+][-]Expert Comment by rrz@871311

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[+][-]Expert Comment by mrcoffee365

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[+][-]Expert Comment by rrz@871311

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[+][-]Accepted Solution by Venabili
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Comment by skatc2
Thanks for the ideas and the source code to clairfy.  I can't quite get away with the if ("/index.xhtml hack because the filter has to work for other pages, but I could send in the page name to trigger on as a filter parameter.

First I'm going to try playing around with Apache, which I think is running up front already, and see if I can get it to redirect in some different manner or at a later time.  (or maybe replace the redirection with a filter).
 
 
Comment by skatc2
I happened to come across a simpler answer; glad I had one more look.  This url-pattern:

<url-pattern>//*</url-pattern>

Is what I was looking for; this maps to the root page (eg domain.com/) and doesn't seem to match anything else.  I can't find any documentation for why this pattern works; I just found it mentioned in a post on the Sun forums (http://forum.java.sun.com/thread.jspa?threadID=283180&messageID=3479996).
 
 
Comment by rrz@871311
I am glad you found a solution.  You should just keep the points. You did the research.  
>I can't find any documentation for why this pattern works;  
Neither can I.    
 
 
Comment by mrcoffee365
I agree with rrz@871311 -- you found the best solution, you should keep the points.

Totally weird that your solution works.  We should keep this question on EE, just not award points.

You can post a request to refund points to the community support list.
 
 
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