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How to get the tomcat internal log out?

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Hello all:

I compile tomcat 5.5.30 and import it to eclipse as a project, to research how the tomcat load class , I need to view the running log ,after reading through this post(http://tomcat.apache.org/tomcat-5.5-doc/logging.html) and adding below log.properties to the direcotry 'common/classes' and log4j-1.26.jar to common/lib, logs turned out not to be generated when I debug the project starting from class Catalina. No idea about it, I've tried many times.

log4j.logger.org.apache.catalina.core.ContainerBase.[Catalina].[localhost]=DEBUG, R
log4j.logger.org.apache.catalina.core=DEBUG, R
log4j.logger.org.apache.catalina.session=DEBUG, R

And the program parameter I use is 'start', vm parameter is '-Dcatalina.home="I:\My Documents\program\java\projects\eclipse\mye9.0\TOMCAT_5_5_30\mybuild-5.5.30"'
Any ideas? Thanks

Kurt Xu
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1. Obligatory observation: the documentation on customizing Tomcat logging omits to make it clear that they're only talking about customizing the logging of the Tomcat server itself. Webapps are responsible individually for their own logfiles. This caused me a lot of confusion.

2. Tomcat 7 is now in production. I don't know what Tomcat 5.5's end-of-life schedule is, but I know of no compelling reason to use 5.5 anymore. Tomcat versions 6 and later no longer have 3 separate "lib" directories, so might as well get prepared.

3. On minor little detail you might have missed in all the confusion: In order to get Tomcat to use log4j instead of the default JULI logging, you have to actually build your own custom copy of Tomcat. It's not simply a config option. That's also going to be true in Tomcat 6 and Tomcat 7 as far as I'm aware.
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