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From Stefan Kost <s.k...@webmacher.de>
Subject Re: tomcat 4.01 with jboss 2.4.4 and a webapplication using xalan/xerces
Date Tue, 05 Feb 2002 08:38:07 GMT
Hi again,

I did more tests and I am getting more and more sure that this is whats
called a bug (please enlighten me if I am wrong). I don't care which
xerces.jar tomcat is using, but if I have one in my
"<webapp>/WEB-INF/lib/" I definitely want to use this one (as written
below, I've even tried to use the same). As I am getting class cast
exceptions, I belived TCs classloader has some problem.
> hi hi,
> 
> Even after reading the docs (
> http://jakarta.apache.org/tomcat/tomcat-4.0-doc/class-loader-howto.html)
> and mailing list archive (
> http://marc.theaimsgroup.com/?l=tomcat-user&r=1&w=2)
> I am still stuck with the following problem:
> We are currently using jboss-2.4.4 with tomcat-3.2.3 and I am trying to
> upgrade to tomcat 4.0.1 as we need its newer jsp features. Our
> application is using jsp together with a custom xsl-tag-library based on
> xalan/xerces. JBoss itself is using xerces as its xml-parser (for
> configs) in our setup. I plugged it in using JAXP.
> Now when I am trying to access any jsp which is using the xsl-taglibrary
> (which uses xalan/xerces) under tomcat 4.0.1 I get:
> -------------- snip ---------------
> type Exception report
> 
> message Internal Server Error
> 
> description The server encountered an internal error (Internal Server
> Error) that prevented it from fulfilling this request.
> 
> exception
> 
> javax.servlet.ServletException: Servlet.init() for servlet jsp threw
> exception
> ...
> root cause
> 
> java.lang.ClassCastException:
> org.apache.xerces.jaxp.DocumentBuilderFactoryImpl
> 	at
> javax.xml.parsers.DocumentBuilderFactory.newInstance(DocumentBuilderFactory.java:103)
> ...
> -------------- snip ---------------
> 
> I guess the issue is somehow related to the fact that jboss is not
> starting tomcat separately but using it as an own service and thus
> tomcat inherits the classpath. The classpath in turn contains
> ../lib/xml-apis.jar:../lib/xerces.jar:../lib/xalan.jar
> 
> I've read about the issuses with xerces and tried to copy the xerces.jar
> included with tomcat 4.0.1 (size 1808883 bytes) over all location of
> mine; still it happens.
> 
> Now I am running out of ideas.
> 
> Stefan
> -- 
> 
>  < W E B M A C H E R > 
> EDV+INTERNETSERVICE GMBH
> 
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> 
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 < W E B M A C H E R > 
EDV+INTERNETSERVICE GMBH

POST: August Bebel Str. 69
      04275 Leipzig

FON:  +49 341 30 34 832
FAX:  +49 341 30 34 840
WEB:  www.webmacher.de


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