Class loader problem with Xalan under 4.0.2 and 4.0.3
Hi, I have:
jakarta-tomcat-4.0.2 / jakarta-tomcat-4.0.3
Xerces-J-bin.2.0.2
xalan-j_2_4_D1-bin.tar.gz
jdom
sun jdk jdk1.3.1
on a linux box.
According to Tomcat documentation, class loading is
done in the following order:
/WEB-INF/classes of your web application
/WEB-INF/lib/*.jar of your web application
Bootstrap classes of your JVM
System class loader classses
$CATALINA_HOME/common/classes
$CATALINA_HOME/common/lib/*.jar
$CATALINA_HOME/classes
$CATALINA_HOME/lib/*.jar
In my /WEB-INF/lib/ directory, I have all the
xerces, xalan and jdom jar files:
BCEL.jar
JLex.jar
bsf.jar
java_cup.jar
jdom.jar
regexp.jar
runtime.jar
xalan.jar
xalansamples.jar
xalanservlet.jar
xercesImpl.jar
xercesSamples.jar
xml-apis.jar
xmlParserAPIs.jar
xsltc.jar
When I run my servlet from /WEB-INF/classes,
I get this:
root cause
java.lang.NoClassDefFoundError:
javax/xml/transform/TransformerException
This means Tomcat can't find the xalan lib.
*** Tomcat can find xerces and jdom libs ***
At this point, I decided to do some testing on other versions
of Tomcat and here are the results.
Tomcat xalan lib in /WEB-INF/lib/
------ --------------------------
3.3.1 OK
4.0.2 NOT OK
4.0.3 NOT OK
4.0.4 OK
The only way to make 4.0.2 and 4.0.3 aware of xalan libs is to
have the xalan jar files in "Bootstrap classes of my JVM" which
is in /usr/local/jdk1.3.1_02/jre/lib/ext. But having the libs
in this directory can effect other applications within the same
container. How do I make my Tomcat 4.0.2 and 4.0.3 use the xalan
lib in my /WEB-INF/lib/ directory? Is this a Tomcat config problem
or a Xalan config problem?
Thanks
Stephen
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