Getting Tomcat 5.0.28 to use Log4j can be a bit of a feat. Tomcat uses
commons-logging. I can't remember all the details, but I think getting
Tomcat's commons-logging to use Log4j as its logging implementation requires
changing out the commons-logging-api.jar that is loaded in the bootstrap
process to use commons-logging.jar which actually includes the Log4j adapter.
I imagine, then, you'd also have to put Log4j in the bootstrap classpath along
with commons-logging. 5.5 is much more friendly about this. You just drop
commons-logging.jar and log4j.jar into common/lib and log4j.xml into
common/classes and it just works. If you continue to have problems, I would
search the Tomcat-user list for details on getting Tomcat-5.0.xx to use Log4j.
I haven't used 5.0.xx for ages so I my help is only as good as my memory.
Jake
Quoting Cosmin Bucur <[EMAIL PROTECTED]>:
> Hi ,
>
> This is a problem i've been encountering every now and then and i was
> able to fix at times by redeploying my app and restarting tomcat ...
> if that makes any sense .
>
> Anywais , I just moved to a new linux server , still on tomcat 5.0.28
> , and for a day and a half I have not been able to get log4j to tell
> me why the app can't be deployed .
>
> Normally I'd get a list of exceptions , messages , stack traces . All
> I get now is :
>
> Jun 28, 2005 11:27:52 AM org.apache.catalina.core.StandardContext
> listenerStart
> SEVERE: Skipped installing application listeners due to previous error(s)
> Jun 28, 2005 11:27:52 AM org.apache.catalina.core.StandardContext start
> SEVERE: Error listenerStart
> Jun 28, 2005 11:27:52 AM org.apache.catalina.core.StandardContext start
> SEVERE: Context startup failed due to previous errors
>
> I tried both with the log4j.properties file in myapp/WEB-INF/classes :
>
>
> log4j.appender.stdout=org.apache.log4j.ConsoleAppender
> log4j.appender.stdout.Target=System.out
> log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
> log4j.appender.stdout.layout.ConversionPattern=%d{ABSOLUTE} %5p %c{1}:%L -
> %m%n
>
> log4j.rootLogger=debug, stdout
>
> and the log4j.properties file in TOMCAT_HOME/common/classes :
>
> log4j.rootLogger=ERROR, A1
> log4j.appender.A1=org.apache.log4j.ConsoleAppender
> log4j.appender.A1.layout=org.apache.log4j.PatternLayout
>
> log4j.appender.A1.layout.ConversionPattern=%d [%t] %-5p %c - %m%n
>
> log4j.logger.org.apache=DEBUG
>
> ------------------
>
> I added the log4j jar in my app , in common/lib , server/lib ,
> shared/lib . I tried only with the global log4j.properties or only
> with my application's log4j.properties .
>
> NOTHING works .
>
> Any help will be greately apreciated .
>
> thanks
>
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