[WAGON-60] wagon-webdav fails with commons-logging classloader issues

• Type: Bug
• Status: Closed
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 1.0-beta-1
• Fix Version/s: 1.0-beta-7
• Component/s: wagon-webdav
• Environment: maven 2.0.4
• Assignee: Dennis Lundberg
• Reporter: Yuri Schimke
• Created: 12/Aug/06 15:25
• Updated: 08/Feb/20 15:41
• Resolved: 14/Sep/10 17:49

Description

I tried it with a build extension and also putting jars in $M2_HOME/lib, but both ways I get classloader issues with commons-logging.

My project uses commons logging and I've seen at least one other report that it can be a problem.

with things in lib:

Caused by: org.apache.commons.logging.LogConfigurationException: org.apache.commons.logging.LogConfigurationException: org.apache.commons.logging.LogConfigurationException: Invalid class loader hierarchy.  You have more than one version of 'org.apache.commons.logging.Log' visible, which is not allowed. (Caused by org.apache.commons.logging.LogConfigurationException: Invalid class loader hierarchy.  You have more than one version of 'org.apache.commons.logging.Log' visible, which is not allowed.) (Caused by org.apache.commons.logging.LogConfigurationException: org.apache.commons.logging.LogConfigurationException: Invalid class loader hierarchy.  You have more than one version of 'org.apache.commons.logging.Log' visible, which is not allowed. (Caused by org.apache.commons.logging.LogConfigurationException: Invalid class loader hierarchy.  You have more than one version of 'org.apache.commons.logging.Log' visible, which is not allowed.))
        at org.apache.commons.logging.impl.LogFactoryImpl.newInstance(LogFactoryImpl.java:543)
        at org.apache.commons.logging.impl.LogFactoryImpl.getInstance(LogFactoryImpl.java:235)
        at org.apache.commons.logging.impl.LogFactoryImpl.getInstance(LogFactoryImpl.java:209)
        at org.apache.commons.logging.LogFactory.getLog(LogFactory.java:351)
        at org.apache.commons.httpclient.HttpClient.<clinit>(HttpClient.java:69)
        ... 30 more
Caused by: org.apache.commons.logging.LogConfigurationException: org.apache.commons.logging.LogConfigurationException: Invalid class loader hierarchy.  You have more than one version of 'org.apache.commons.logging.Log' visible, which is not allowed. (Caused by org.apache.commons.logging.LogConfigurationException: Invalid class loader hierarchy.  You have more than one version of 'org.apache.commons.logging.Log' visible, which is not allowed.)
        at org.apache.commons.logging.impl.LogFactoryImpl.getLogConstructor(LogFactoryImpl.java:397)
        at org.apache.commons.logging.impl.LogFactoryImpl.newInstance(LogFactoryImpl.java:529)
        ... 34 more
Caused by: org.apache.commons.logging.LogConfigurationException: Invalid class loader hierarchy.  You have more than one version of 'org.apache.commons.logging.Log' visible, which is not allowed.
        at org.apache.commons.logging.impl.LogFactoryImpl.getLogConstructor(LogFactoryImpl.java:385)

using build extension:

java.lang.ExceptionInInitializerError
        at org.apache.webdav.lib.WebdavSession.getSessionInstance(WebdavSession.java:145)
        at org.apache.webdav.lib.WebdavSession.getSessionInstance(WebdavSession.java:127)
        at org.apache.webdav.lib.WebdavResource.setClient(WebdavResource.java:1273)
        at org.apache.webdav.lib.WebdavResource.setHttpURL(WebdavResource.java:1298)
        at org.apache.webdav.lib.WebdavResource.setHttpURL(WebdavResource.java:1320)
        at org.apache.webdav.lib.WebdavResource.setHttpURL(WebdavResource.java:1408)
        at org.apache.webdav.lib.WebdavResource.<init>(WebdavResource.java:290)
        at org.apache.maven.wagon.providers.webdav.CorrectedWebdavResource.<init>(CorrectedWebdavResource.java:52)
        at org.apache.maven.wagon.providers.webdav.WebDavWagon.openConnection(WebDavWagon.java:139)
        at org.apache.maven.wagon.AbstractWagon.connect(AbstractWagon.java:143)
        at org.apache.maven.wagon.AbstractWagon.connect(AbstractWagon.java:106)
        at org.apache.maven.plugins.site.SiteDeployMojo.execute(SiteDeployMojo.java:132)
        at org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginManager.java:412)
        at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:534)
        at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalWithLifecycle(DefaultLifecycleExecutor.java:475)
        at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(DefaultLifecycleExecutor.java:454)
        at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHandleFailures(DefaultLifecycleExecutor.java:306)
        at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegments(DefaultLifecycleExecutor.java:273)
        at org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:140)
        at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:322)
        at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:115)
        at org.apache.maven.cli.MavenCli.main(MavenCli.java:256)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:585)
        at org.codehaus.classworlds.Launcher.launchEnhanced(Launcher.java:315)
        at org.codehaus.classworlds.Launcher.launch(Launcher.java:255)
        at org.codehaus.classworlds.Launcher.mainWithExitCode(Launcher.java:430)
        at org.codehaus.classworlds.Launcher.main(Launcher.java:375)
Caused by: org.apache.commons.logging.LogConfigurationException: org.apache.commons.logging.LogConfigurationException: org.apache.commons.logging.LogConfigurationException: Class org.apache.commons.logging.impl.Jdk14Logger does not implement Log
        at org.apache.commons.logging.impl.LogFactoryImpl.newInstance(LogFactoryImpl.java:532)
        at org.apache.commons.logging.impl.LogFactoryImpl.getInstance(LogFactoryImpl.java:272)
        at org.apache.commons.logging.impl.LogFactoryImpl.getInstance(LogFactoryImpl.java:246)
        at org.apache.commons.logging.LogFactory.getLog(LogFactory.java:395)
        at org.apache.commons.httpclient.HttpClient.<clinit>(HttpClient.java:69)
        ... 30 more
Caused by: org.apache.commons.logging.LogConfigurationException: org.apache.commons.logging.LogConfigurationException: Class org.apache.commons.logging.impl.Jdk14Logger does not implement Log
        at org.apache.commons.logging.impl.LogFactoryImpl.getLogConstructor(LogFactoryImpl.java:416)
        at org.apache.commons.logging.impl.LogFactoryImpl.newInstance(LogFactoryImpl.java:525)
        ... 34 more
Caused by: org.apache.commons.logging.LogConfigurationException: Class org.apache.commons.logging.impl.Jdk14Logger does not implement Log
        at org.apache.commons.logging.impl.LogFactoryImpl.getLogConstructor(LogFactoryImpl.java:412)
        ... 35 more

Issue Links

• is depended upon by: MSITE-459 More than one version of 'org.apache.commons.logging.Log' visible in the classpath