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From Jeff Bischoff <jbisch...@klkurz.com>
Subject Re: Log4j Web-Deployment best practices question
Date Fri, 10 Mar 2006 20:31:19 GMT
Yes, but then I am not "playing nice" with the other web applications 
running on that Tomcat server?

James Stauffer wrote:
> You could setup Tomcat to have common/lib/log4j.jar and
> common/classes/log4j.xml.
> Then the same war should work for both Tomcat and JBoss.
> 
> On 3/10/06, Jeff Bischoff <jbischoff@klkurz.com> wrote:
> 
>>I have been using Log4j for the past several months. After reading the
>>documentation and the mailing list archives, I am still a bit puzzled
>>about the best practices for deploying web-apps that use Log4j.
>>
>>What I would like to have is a .WAR file for my website that can be
>>deployed to either Tomcat or JBoss, without modification. Unfortunately
>>it seems that the classloaders of these two servers function a bit
>>differently...
>>
>>With Tomcat, I understand that the best practice is to provide your own
>>copy of log4j.jar and configuration files inside your WEB-INF folder.
>>
>>In JBOSS, however, log4j.jar is included by default in the shared /lib/
>>folder. If I so much as put an (identical) copy of log4j.jar in my
>>/WEB-INF/lib/ folder, JBOSS throws exceptions while deploying my
>>application, and logging fails. (The exception message is at the end of
>>this email)
>>
>>I am currently building my WAR file with no log4j.jar, nor log4j
>>configuration files, and deploying successfully to JBoss (modifying the
>>default configuration file in JBoss). Unfortunately, now if I want to
>>use standalone Tomcat, I have to add things to my WAR file, before I can
>>deploy it.
>>
>>I have considered switching to commons-logging as a wrapper to log4j (a
>>trivial conversion). Unfortunately, from what I have read, I will run
>>into the same problems with classloading.
>>
>>14:54:59,312 INFO  [STDOUT] log4j:ERROR A
>>"org.jboss.logging.util.OnlyOnceErrorHandler" object is not assignable
>>to a "org.apache.log4j.spi.ErrorHandler" variable.
>>14:54:59,312 INFO  [STDOUT] log4j:ERROR The class
>>"org.apache.log4j.spi.ErrorHandler" was loaded by
>>14:54:59,312 INFO  [STDOUT] log4j:ERROR [WebappClassLoader
>>   delegate: false
>>   repositories:
>>     /WEB-INF/classes/
>>----------> Parent Classloader:
>>java.net.FactoryURLClassLoader@d9799d
>>] whereas object of type
>>14:54:59,312 INFO  [STDOUT] log4j:ERROR
>>"org.jboss.logging.util.OnlyOnceErrorHandler" was loaded by
>>[org.jboss.system.server.NoAnnotationURLClassLoader@ab95e6].
>>14:54:59,359 INFO  [STDOUT] log4j:ERROR Could not create an Appender.
>>Reported error follows.
>>14:54:59,359 INFO  [STDOUT] java.lang.ClassCastException:
>>org.jboss.logging.appender.DailyRollingFileAppender
>>...(stack trace follows)
>>
>>- Jeff Bischoff
>>
>>
>>
>>
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>>
> 
> 
> 
> --
> James Stauffer
> Are you good? Take the test at http://www.livingwaters.com/good/
> 
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> 
> 
> 




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