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commons-logging / slf4j / commons discovery - Non fatal Classloading issue when Axis (in the alfresco.war) starts up in Tomcat7 maven plugin #150

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mindthegab opened this issue Jul 20, 2014 · 5 comments
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commons-logging / slf4j / commons discovery - Non fatal Classloading issue when Axis (in the alfresco.war) starts up in Tomcat7 maven plugin #150

mindthegab opened this issue Jul 20, 2014 · 5 comments
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bug imported Priority-Medium
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2.0.0

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@mindthegab
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From colum...@gmail.com on October 30, 2013 02:29:49

What steps will reproduce the problem? For the AMP archetype:
1.mvn clean install -Pamp-to-war,run
2.At the end end of the Alfresco (successful) startup, the following exception is thrown when loading the Axis servlet:

SEVERE: Servlet /alfresco threw load() exception
org.apache.commons.discovery.DiscoveryException: Class org.apache.commons.logging.impl.SLF4JLogFactory does not implement org.apache.commons.logging.LogFactory
at org.apache.commons.discovery.tools.ClassUtils.verifyAncestory(ClassUtils.java:180)
at org.apache.commons.discovery.tools.SPInterface.verifyAncestory(SPInterface.java:201)
at org.apache.commons.discovery.tools.SPInterface.newInstance(SPInterface.java:195)
at org.apache.commons.discovery.tools.DiscoverClass.newInstance(DiscoverClass.java:579)
at org.apache.commons.discovery.tools.DiscoverSingleton.find(DiscoverSingleton.java:418)
at org.apache.commons.discovery.tools.DiscoverSingleton.find(DiscoverSingleton.java:378)
at org.apache.axis.components.logger.LogFactory$1.run(LogFactory.java:45)
at java.security.AccessController.doPrivileged(Native Method)
at org.apache.axis.components.logger.LogFactory.getLogFactory(LogFactory.java:41)
at org.apache.axis.components.logger.LogFactory.(LogFactory.java:33)
at org.apache.axis.transport.http.AxisServletBase.(AxisServletBase.java:58)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
at java.lang.Class.newInstance(Class.java:374)
at org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:138)
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1144)
at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:1088)
at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:5033)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5317)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:744)

  1. Alfresco works, but (most likely, not tested) Axis won't. What is the expected output? What do you see instead? No exceptions, Axis working.

More investigation:
We clearly have a classloading issue. I tried to remove some of the commons-logging stuff following some posts on not having two commons-logging versions on the classpath, but unsuccessfully. Maybe could also be related to slf4j itself ( https://confluence.atlassian.com/pages/viewpage.action?pageId=227414216 ), not entirely sure at this time.

Original issue: http://code.google.com/p/maven-alfresco-archetypes/issues/detail?id=150
@mindthegab
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From colum...@gmail.com on November 05, 2013 08:45:51

Labels: -Milestone-Release-sdk-unscheduled Milestone-Release-sdk-1.1.1

@mindthegab
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From haas...@gmail.com on November 14, 2013 04:06:44

i managed to get rid of the exception by adding the bridge between commons logging and slf4j as dependency in the pom of my amp project:

org.slf4j
jcl-over-slf4j
1.5.11

@see http://www.slf4j.org/legacy.html#jclOverSLF4J

@mindthegab
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From bulat.ya...@gmail.com on November 17, 2013 05:45:37

This worked for me as well, thanks!

@mindthegab
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From colum...@gmail.com on November 17, 2013 05:51:09

You guys Rock!

I will look to make sure this is added both to the -Pamp-to-war profile (for the AMP) and to the -Prun profile (for the all-in-one)

Labels: -Milestone-Release-sdk-1.1.1 Milestone-Release-sdk-1.1.2

@mindthegab
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From colum...@gmail.com on November 17, 2013 06:53:53

This issue was closed by revision r732 .

Status: Fixed

@mindthegab mindthegab added this to the Release-sdk-2.0.0 milestone Jul 20, 2014
@mindthegab mindthegab modified the milestones: 2.0.0-beta-1, 2.0.0-beta-3 Sep 9, 2014
@mindthegab mindthegab modified the milestones: 2.0.0-beta-4, 2.0.0 Dec 23, 2014
@antaflos antaflos mentioned this issue Sep 21, 2015
Closed
gehriga pushed a commit to hannecke-its/alfresco-sdk that referenced this issue May 2, 2016
@mindthegab
fixes issue Alfresco#150. Axis logging exception not thrown anymore a…
2461827 
…t startup

git-svn-id: http://maven-alfresco-archetypes.googlecode.com/svn/trunk@732 04253f4f-3451-0410-a141-5562f1e59037
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