java.lang.IllegalArgumentException with Jetty and IdP

[Fabio Spelta]

Hello everybody.

We d'love to use Jetty (7.6.4.v20120524) as a container for the Shibboleth
IdP(2.3.6) but we can't manage to make it working.
We followed the instructions here
https://wiki.shibboleth.net/confluence/display/SHIB2/IdPJetty7Prepare with
no success.
We get tons of exceptions and the Container is not loaded in the end. The
long (huge, actually) series of exceptions begins with this:

--
2012-06-15 17:40:24.499:WARN:oejw.WebAppClassLoader:EXCEPTION
java.lang.IllegalArgumentException: !file:
jar:file:/opt/shibboleth-idp/war/idp.war!/WEB-INF/lib/activation-1.1.jar
        at
org.eclipse.jetty.webapp.WebAppClassLoader.addClassPath(WebAppClassLoader.java:239)
--

There's a similar entry for each jar file in the Shibboleth library.
The last entry of the series - which we suppose to be related to the fact
that the libraries can't be loaded - do look like this

--
2012-06-15 17:48:11.028:WARN:oejw.WebAppContext:Failed startup of context
o.e.j.w.WebAppContext{/idp,jar:file:/opt/shibboleth-idp/war/idp.war!/},/opt/shibboleth-idp/war/idp.war
javax.servlet.UnavailableException:
edu.internet2.middleware.shibboleth.common.log.SLF4JMDCCleanupFilter
--

We got this errors no matter which Java version we used and no matter how
strong we hit the Enter key.
We also used an hammer with no success.

Is anybody willing to share her/his expertise about Jetty and Shibboleth
and help us to figure out what's wrong with it? We bought a new keyboard in
the while.
Thanks so much!
-- 
Fabio Spelta
Sistemi Informativi
Universita` degli Studi di Milano-Bicocca
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