Hi Oren,
Oren Livne wrote:
Dear Gaurav and everyone,
Thanks so much for your help. The explanations were good and helped me
better understand how the tomcat classloader works. However, I still
have a problem running my web application. In short, the exception is
"java.lang.NoClassDefFoundError: org/apache/log4j/Category"; see
below. I tried removing files, moving jar files, and sometimes got
"Logger" not found, or "inconsistent hierarchy --you have more than
one logger". By the way, it all works perfectly on my windows desktop
with MyEclipse 5.1 and the same classpath, or at least I think it's
the same.
I know it's because commons-logging.jar, commons-logging-api.jar and
log4-1.2.11.jar ahve some API conflicts. I didn't understand the
explanations on why, and didn't find anywhere the steps to follow to
get it to work (which is all I care about!). Can someone please help
outline the steps I need to do to get my app to work?
Thanks so much in advance.
Oren
do not use commons-logging 1.0.x but 1.1.x instead. It has a very nice
diagnostic function and the error would have been reported much better.
http://jakarta.apache.org/commons/logging/
http://jakarta.apache.org/site/downloads/downloads_commons-logging.cgi
http://jakarta.apache.org/commons/logging/troubleshooting.html
Regards
Boris
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