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Posted to user@commons.apache.org by Michael Oliver <ol...@sourceonenet.com> on 2005/05/20 19:49:01 UTC
Log4JLogger does not implement Log
I have created an ant task as follows:
<path id="compile.classpath">
<pathelement path ="${webinf.dir}/lib/commons-beanutils.jar"/>
<pathelement path ="${webinf.dir}/lib/commons-digester.jar"/>
<pathelement path ="${webinf.dir}/lib/commons-logging.jar"/>
<pathelement path ="${webinf.dir}/lib/AJContentClient.jar"/>
<pathelement path ="${webinf.dir}/lib/AJRegistries.jar"/>
<pathelement path ="${webinf.dir}/lib/AlariusESB.jar"/>
<pathelement path ="${webinf.dir}/lib/log4j-1.2.8.jar"/>
<pathelement path ="${webinf.dir}/lib/junit.jar"/>
<pathelement path ="${webinf.dir}/lib/struts.jar"/>
<pathelement path = "${webinf.dir}/lib/standard.jar"/>
<pathelement path ="${webinf.dir}/classes"/>
<pathelement path ="${classpath.external}"/>
<pathelement path ="${classpath}"/>
</path>
<target name="axis-java2wsdl">
<echo message="Building wsdl for ${project.distname} at
${local.wsdl}}"/>
<axis-java2wsdl
classname="com.alarius.assignments.actions.SaveAssignmentForm"
style= "DOCUMENT"
namespace= "urn:http://alariussystemsllc.com/AJCCWebService/"
location= "http://localhost:8080/AlariusAssignments/services/"
output="AlariusAssignments.wsdl" >
<classpath>
<pathelement path ="${webinf.dir}/classes"/>
</classpath>
<classpath refid="compile.classpath"/>
</axis-java2wsdl >
</target>
commons-logging and log4j are in the compile.classpath
When I run this target I get
axis-java2wsdl:
[echo] Building wsdl for AlariusAssignments at
C:\Java\ArchivedWorkspaces\AlariusAssignments\AlariusAssignments.wsdl}
[axis-java2wsdl] Java2WSDL
com.alarius.assignments.actions.SaveAssignmentForm
[axis-java2wsdl] java.lang.ExceptionInInitializerError
[axis-java2wsdl] at java.lang.Class.forName0(Native Method)
...
[axis-java2wsdl] Caused by:
org.apache.commons.logging.LogConfigurationException:
org.apache.commons.logging.LogConfigurationException:
org.apache.commons.logging.LogConfigurationException: Class
org.apache.commons.logging.impl.Log4JLogger does not implement Log
[axis-java2wsdl] at
org.apache.commons.logging.impl.LogFactoryImpl.newInstance(LogFactoryImp
l.java:532)...
So researching this I find that the "Log4JLogger does not implement Log"
is caused by a classloader problem.
So I found in the eclipse ant runtime preferences Global Entries, both
the commons-logging and log4j jars. So I removed them from there and
ran ant on that target again...
axis-java2wsdl:
[echo] Building wsdl for AlariusAssignments at
C:\Java\ArchivedWorkspaces\AlariusAssignments\AlariusAssignments.wsdl}
[axis-java2wsdl] java.lang.NoClassDefFoundError:
org.apache.commons.logging.LogFactory
[axis-java2wsdl] at
org.apache.axis.components.logger.LogFactory.class$(LogFactory.java:84)
...
Huh???
If the ant runtime is loading the commons-logging and log4j jars and
that causes a classloader sequence problem, then removing them from
there and leaving the ones in the compile.classpath should NOT cause a
NoClassDefFoundError.
How can it be that one way it doesn't find LogFactory and the other way
it has a classloader sequence problem?
Conversely if ant needs to load them and the ant axis task also needs to
load them, how do I ensure they are loaded in the proper sequence to
avoid the conflict?
Michael Oliver
CTO
Alarius Systems LLC
6800 E. Lake Mead Blvd, #1096
Las Vegas, NV 89156
Phone:(702)643-7425
Fax:(702)974-0341
*Note new email changed from oliverm@matrix-media.com
Re: Log4JLogger does not implement Log
Posted by Simon Kitching <sk...@apache.org>.
On Fri, 2005-05-20 at 10:49 -0700, Michael Oliver wrote:
> When I run this target I get
>
>
>
> [axis-java2wsdl] Caused by:
> org.apache.commons.logging.LogConfigurationException:
> org.apache.commons.logging.LogConfigurationException:
> org.apache.commons.logging.LogConfigurationException: Class
> org.apache.commons.logging.impl.Log4JLogger does not implement Log
>
> [axis-java2wsdl] at
> org.apache.commons.logging.impl.LogFactoryImpl.newInstance(LogFactoryImp
> l.java:532)...
>
>
>
> So researching this I find that the "Log4JLogger does not implement Log"
> is caused by a classloader problem.
>
>
>
> So I found in the eclipse ant runtime preferences Global Entries, both
> the commons-logging and log4j jars. So I removed them from there and
> ran ant on that target again...
>
>
>
> axis-java2wsdl:
>
> [echo] Building wsdl for AlariusAssignments at
> C:\Java\ArchivedWorkspaces\AlariusAssignments\AlariusAssignments.wsdl}
>
> [axis-java2wsdl] java.lang.NoClassDefFoundError:
> org.apache.commons.logging.LogFactory
>
> [axis-java2wsdl] at
> org.apache.axis.components.logger.LogFactory.class$(LogFactory.java:84)
>
> ...
>
>
>
> Huh???
>
>
>
> If the ant runtime is loading the commons-logging and log4j jars and
> that causes a classloader sequence problem, then removing them from
> there and leaving the ones in the compile.classpath should NOT cause a
> NoClassDefFoundError.
>
>
>
> How can it be that one way it doesn't find LogFactory and the other way
> it has a classloader sequence problem?
This problem is caused when you have *all* of the following true:
* child-first classloading order selected in child classloader
* code in child classloader that calls JCL
* commons-logging.jar available via child classloader
* code in shared classloader that calls JCL
* commons-logging.jar available via shared classloader
Because you have code in the shared classloader that calls JCL, you
*must* deploy commons-logging.jar at the shared level.
So the simplest fix is to delete the commons-logging.jar from the child
classloader. The downside of this is that all your logging config then
becomes "global", ie you need to configure logging using a config file
at the shared level, and webapps share the same logging instance. But I
don't think you really care about logging in this case do you?
Regards,
Simon
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RE: Log4JLogger does not implement Log
Posted by Michael Oliver <ol...@sourceonenet.com>.
Thanks, will try the <java> task with fork and let the list know.
Michael Oliver
CTO
Alarius Systems LLC
6800 E. Lake Mead Blvd, #1096
Las Vegas, NV 89156
Phone:(702)643-7425
Fax:(702)974-0341
*Note new email changed from oliverm@matrix-media.com
-----Original Message-----
From: Mattias J [mailto:mattias.jiderhamn@expertsystem.se]
Sent: Saturday, May 21, 2005 12:37 AM
To: Jakarta Commons Users List
Subject: Re: Log4JLogger does not implement Log
At 2005-05-20 19:49, you wrote:
>...
> <axis-java2wsdl
>
>
>classname="com.alarius.assignments.actions.SaveAssignmentForm"
>
> style= "DOCUMENT"
>
> namespace= "urn:http://alariussystemsllc.com/AJCCWebService/"
>
> location= "http://localhost:8080/AlariusAssignments/services/"
>
> output="AlariusAssignments.wsdl" >
>
> <classpath>
>
> <pathelement path ="${webinf.dir}/classes"/>
>
> </classpath>
>
> <classpath refid="compile.classpath"/>
>
> </axis-java2wsdl >
>
></target>
>
>...
>
>[axis-java2wsdl] Caused by:
>org.apache.commons.logging.LogConfigurationException:
>org.apache.commons.logging.LogConfigurationException:
>org.apache.commons.logging.LogConfigurationException: Class
>org.apache.commons.logging.impl.Log4JLogger does not implement Log
This is why lots of people hate Commons Logging (see
http://www.qos.ch/logging/classloader.jsp and
http://www.qos.ch/logging/thinkAgain.jsp).
Without knowing the details of your classpath, using fork migh help.
Don't
remember whether there is a fork-attribute on the axis-java2wsdl task;
if
not try an ordinary "java" task with fork.
/ Mattias J
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Re: Log4JLogger does not implement Log
Posted by Mattias J <ma...@expertsystem.se>.
At 2005-05-20 19:49, you wrote:
>...
> <axis-java2wsdl
>
>
>classname="com.alarius.assignments.actions.SaveAssignmentForm"
>
> style= "DOCUMENT"
>
> namespace= "urn:http://alariussystemsllc.com/AJCCWebService/"
>
> location= "http://localhost:8080/AlariusAssignments/services/"
>
> output="AlariusAssignments.wsdl" >
>
> <classpath>
>
> <pathelement path ="${webinf.dir}/classes"/>
>
> </classpath>
>
> <classpath refid="compile.classpath"/>
>
> </axis-java2wsdl >
>
></target>
>
>...
>
>[axis-java2wsdl] Caused by:
>org.apache.commons.logging.LogConfigurationException:
>org.apache.commons.logging.LogConfigurationException:
>org.apache.commons.logging.LogConfigurationException: Class
>org.apache.commons.logging.impl.Log4JLogger does not implement Log
This is why lots of people hate Commons Logging (see
http://www.qos.ch/logging/classloader.jsp and
http://www.qos.ch/logging/thinkAgain.jsp).
Without knowing the details of your classpath, using fork migh help. Don't
remember whether there is a fork-attribute on the axis-java2wsdl task; if
not try an ordinary "java" task with fork.
/ Mattias J
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