Hi,
I've a webapp which contains has some jar files located in WEB-INF/lib.
One of this jar file contains a class that is using class.forname method
to instantiate another class located in the same jar file.
Unfortunately, this gives me a java.lang.NoClassDefFoundError.
As I read that previous versions had problem loading jar files located
under WEB-INF/lib, I upgraded to version 4.0.4b1, but the problem was
still there.
So I added some code to print which classloader this class was using
when trying to instantiate and the result is as follow:
WebappClassLoader^M
available:^M
delegate: false^M
repositories:^M
/WEB-INF/classes/^M
required:^M
----------> Parent Classloader:^M
StandardClassLoader^M
available:^M
delegate: true^M
repositories:^M
file:/home/cartaljp/Dev/Tomcat4.0/jakarta-tomcat-4.0.4-b1/classes/^M
file:/home/cartaljp/Dev/Tomcat4.0/jakarta-tomcat-4.0.4-b1/lib/naming-factory.jar^M
file:/home/cartaljp/Dev/Tomcat4.0/jakarta-tomcat-4.0.4-b1/lib/jasper-compiler.jar^M
file:/home/cartaljp/Dev/Tomcat4.0/jakarta-tomcat-4.0.4-b1/lib/jasper-runtime.jar^M
required:^M
----------> Parent Classloader:^M
StandardClassLoader^M
available:^M
Extension[javax.mail, implementationVendor=Sun Microsystems, Inc.,
implementationVendorId=com.sun, implementationVersion=1.2,
specificationVendor=Sun Microsystems, Inc., specificationVersion=1.2]^M
delegate: true^M
repositories:^M
....
From what I understand, the webappclassloader does not take into
account all jar files located under WEB-INF/lib, hence the
NoClassDefFoundError.
I'm doing something wrong or is it a problem with the classloader ?
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