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http://nagoya.apache.org/bugzilla/show_bug.cgi?id=6248 using xerces in webapp causes class cast exception Summary: using xerces in webapp causes class cast exception Product: Tomcat 4 Version: 4.0.1 Final Platform: PC OS/Version: Linux Status: NEW Severity: Blocker Priority: Other Component: Catalina AssignedTo: [EMAIL PROTECTED] ReportedBy: [EMAIL PROTECTED] 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. Apart from the location which is included in the classpath I have xerces sitting in my webapps WEB-INF/lib folder and tried other locations too. At the moment I am out of ideas, but more than willing to try out anything you hopefully can suggest - thanks for listening -- To unsubscribe, e-mail: <mailto:[EMAIL PROTECTED]> For additional commands, e-mail: <mailto:[EMAIL PROTECTED]>
