[ http://jira.codehaus.org/browse/WAGON-60?page=comments#action_72223 ] Dennis Lundberg commented on WAGON-60: --------------------------------------
A good way to diagnose problems regarding commons-logging and classloading issues is to upgrade the dependency on commons-logging to version 1.1. That version has some great new diagnostics that can be turned on. You can read more on how to do this in the Commons Logging troubleshooting guide: http://jakarta.apache.org/commons/logging/troubleshooting.html#How_To_Use_Diagnostic_logging > wagon-webdav fails with commons-logging classloader issues > ---------------------------------------------------------- > > Key: WAGON-60 > URL: http://jira.codehaus.org/browse/WAGON-60 > Project: wagon > Issue Type: Bug > Components: wagon-webdav > Affects Versions: 1.0-beta-1 > Environment: maven 2.0.4 > Reporter: Yuri Schimke > Priority: Critical > > 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 -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://jira.codehaus.org/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira
