Tomat 5.5 Spring 2.0 log4j debugging

Had to dig for this one a bit to get spring framework debug to show up.

Set up logging in Tomcat 5.5

Note: CATALINA_HOME is probably the environment variable pointing to your tomcat installation.
* put log4j and commons-logging in ${CATALINA_HOME}/common/lib
* put a basic log4j.properties file in ${CATALINA_HOME}/common/classes

for example:

log4j.rootLogger=DEBUG, stdout
log4j.logger.org.apache=INFO

log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d %p [%c] - %m%n

Note: I turned org.apache to INFO to ensure I don't get a few miles of digester logging
Note: Of course you could add file appenders if you wish - I'm keeping this minimal

Make sure commons-logging.jar is not in your WEB-INF/lib directory of your web-app. That seemed to be the thing that switched off the availability for Spring debug logging. I'm sure there are other ways to get this going but this worked for me.