Are you trying to simply debug spring with log4j, or are you trying to
log as an aspect? I do the former using spring 1.2 without any
problems. Commons logging uses a log4j config if it finds one.

Place a file similair to this in your WEB-INF/classes dir called
'log4j.properties', along with commons logging and log4j in your
WEB-INF/lib, and you should see files like apache_logs.log in your
tomcat/logs dir:

##################INICIO DOS APPENDERs################################

# console1 será um appender de console que exibirá somente a mensagem
log4j.appender.console1=org.apache.log4j.ConsoleAppender

log4j.appender.console1.layout=org.apache.log4j.PatternLayout
log4j.appender.console1.layout.ConversionPattern=%m

#-------------------------------------------------------------------#
#-------------------------------------------------------------------#

# console2 será um appender de console que exibirá todas as
propriedades
log4j.appender.console2=org.apache.log4j.ConsoleAppender

log4j.appender.console2.layout=org.apache.log4j.PatternLayout
log4j.appender.console2.layout.ConversionPattern=%d [%c] - %m%n

#-------------------------------------------------------------------#
#-------------------------------------------------------------------#

# apacheOrg é um appender de arquivo para as classes da apache.org
log4j.appender.apacheOrg=org.apache.log4j.RollingFileAppender
log4j.appender.apacheOrg.layout=org.apache.log4j.PatternLayout
log4j.appender.apacheOrg.layout.ConversionPattern=%d [%c] - %m%n

log4j.appender.apacheOrg.File=${catalina.home}/logs/apache_logs.log

log4j.appender.apacheOrg.MaxFileSize=40000KB
log4j.appender.apacheOrg.MaxBackupIndex=1

#-------------------------------------------------------------------#
#-------------------------------------------------------------------#

# appErros é um appender de arquivo para os logs de erro do Sistema
log4j.appender.appErros=org.apache.log4j.RollingFileAppender
log4j.appender.appErros.layout=org.apache.log4j.PatternLayout
log4j.appender.appErros.layout.ConversionPattern=%m
log4j.appender.appErros.File=app_erros.log

log4j.appender.appErros.MaxFileSize=400KB
log4j.appender.appErros.MaxBackupIndex=1

#-------------------------------------------------------------------#
#-------------------------------------------------------------------#

# appDebug é um appender de arquivo para os logs de debug do Sistema
log4j.appender.appDebug=org.apache.log4j.RollingFileAppender
log4j.appender.appDebug.layout=org.apache.log4j.PatternLayout
#log4j.appender.appDebug.layout.ConversionPattern=%-4r %-5p %c %x -
%m%n
log4j.appender.appDebug.layout.ConversionPattern=%d [%c] - %m%n

log4j.appender.appDebug.File=${catalina.home}/logs/app_debug.log

log4j.appender.appDebug.MaxFileSize=40000KB
log4j.appender.appDebug.MaxBackupIndex=1

##################FIM DOS APPENDERs##################################

#################INICIO DO ROOTlOGGER################################

log4j.rootLogger=DEBUG, console2

###################FIM DO ROOTlOGGER################################

#############INICIO DAS DECLARAÇÕES DE CATEGORIAS####################

log4j.category.org.springframework=DEBUG, console2, apacheOrg

log4j.category.org.hibernate=DEBUG, console2, apacheOrg

log4j.category.net.sf.acegisecurity=WARN, console2, apacheOrg

log4j.category.com.siemens=DEBUG, console2, appDebug

log4j.category.org.apache=WARN, console2, apacheOrg

################FIM DAS DECLARAÇÕES DE CATEGORIAS####################