[MSITE-603] ClassNotFoundException on site:site when validating XML input documents

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.0
• Fix Version/s: 3.1

Environment

Apache Maven 3.0.3 (r1075438; 2011-02-28 18:31:09+0100)
Java version: 1.6.0_20, vendor: Sun Microsystems Inc.
Default locale: en_CA, platform encoding: UTF-8
OS name: "linux", version: "2.6.32-33-generic", arch: "i386", family: "unix"

• Assignee: Lukas Theussl
• Reporter: Andreas Sewe
• Created: 04/Aug/11 05:57
• Updated: 07/Apr/15 18:15
• Resolved: 27/Sep/11 06:44

Description

When setting validate to true the 3.0 release of the maven-site-plugin fails with a ClassNotFoundException (sample project included):

at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:125)
... 20 more
Caused by: java.lang.NoClassDefFoundError: org/apache/commons/logging/LogFactory
at org.apache.http.impl.client.AbstractHttpClient.<init>(AbstractHttpClient.java:159)
at org.apache.http.impl.client.DefaultHttpClient.<init>(DefaultHttpClient.java:178)
at org.apache.maven.doxia.parser.AbstractXmlParser$CachedFileEntityResolver.toByteArray(AbstractXmlParser.java:796)
at org.apache.maven.doxia.parser.AbstractXmlParser$CachedFileEntityResolver.resolveEntity(AbstractXmlParser.java:738)
at org.apache.xerces.util.EntityResolverWrapper.resolveEntity(Unknown Source)
at org.apache.xerces.impl.XMLEntityManager.resolveEntity(Unknown Source)
at org.apache.xerces.impl.xs.XMLSchemaLoader.resolveDocument(Unknown Source)
at org.apache.xerces.impl.xs.XMLSchemaValidator.findSchemaGrammar(Unknown Source)
at org.apache.xerces.impl.xs.XMLSchemaValidator.handleStartElement(Unknown Source)
at org.apache.xerces.impl.xs.XMLSchemaValidator.startElement(Unknown Source)
at org.apache.xerces.impl.XMLNSDocumentScannerImpl.scanStartElement(Unknown Source)
at org.apache.xerces.impl.XMLNSDocumentScannerImpl$NSContentDispatcher.scanRootElementHook(Unknown Source)
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown Source)
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
at org.apache.maven.doxia.util.XmlValidator.validate(XmlValidator.java:108)
at org.apache.maven.doxia.siterenderer.DefaultSiteRenderer.validate(DefaultSiteRenderer.java:831)
at org.apache.maven.doxia.siterenderer.DefaultSiteRenderer.renderDocument(DefaultSiteRenderer.java:365)
at org.apache.maven.doxia.siterenderer.DoxiaDocumentRenderer.renderDocument(DoxiaDocumentRenderer.java:53)
at org.apache.maven.doxia.siterenderer.DefaultSiteRenderer.renderModule(DefaultSiteRenderer.java:317)
at org.apache.maven.doxia.siterenderer.DefaultSiteRenderer.render(DefaultSiteRenderer.java:134)
at org.apache.maven.plugins.site.SiteMojo.renderLocale(SiteMojo.java:175)
at org.apache.maven.plugins.site.SiteMojo.execute(SiteMojo.java:138)
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:101)
... 20 more
Caused by: java.lang.ClassNotFoundException: org.apache.commons.logging.LogFactory
at org.codehaus.plexus.classworlds.strategy.SelfFirstStrategy.loadClass(SelfFirstStrategy.java:50)
at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:244)
at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:230)
... 47 more

This problem only shows up if there are XML input documents (FML, XDoc) present to be validated.

It doesn't occur with 3.0-beta-3 instead of 3.0.

Issue Links

• relates to: MSITE-459 More than one version of 'org.apache.commons.logging.Log' visible in the classpath