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From "Woonsan Ko (JIRA)" <jetspeed-...@portals.apache.org>
Subject [jira] Resolved: (JS2-1040) When dom4j library is common lib dir, dom4j DocumentFactory cannot be accessed because of classloaders conclict
Date Mon, 06 Jul 2009 13:38:14 GMT

     [ https://issues.apache.org/jira/browse/JS2-1040?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Woonsan Ko resolved JS2-1040.
-----------------------------

    Resolution: Fixed

> When dom4j library is common lib dir, dom4j DocumentFactory cannot be accessed because
of classloaders conclict
> ---------------------------------------------------------------------------------------------------------------
>
>                 Key: JS2-1040
>                 URL: https://issues.apache.org/jira/browse/JS2-1040
>             Project: Jetspeed 2
>          Issue Type: Bug
>    Affects Versions: 2.2.0
>            Reporter: Woonsan Ko
>            Assignee: Woonsan Ko
>             Fix For: 2.2.1
>
>
> If there are dom4j libraries in both common lib dir and portal's lib dir, then the following
errors are found when user tries to add a portlet in a page.
> Jul 6, 2009 11:00:04 AM org.apache.catalina.core.ApplicationContext log
> SEVERE: JetspeedContainerServlet: Error rendering portlet "j2-admin::CategoryPortletSelector":
java.lang.ExceptionInInitializerError
> java.lang.ExceptionInInitializerError
> 	at org.apache.jetspeed.util.DOMUtils.createSerializableElement(DOMUtils.java:64)
> 	at org.apache.jetspeed.container.impl.PortletResponseContextImpl.createElement(PortletResponseContextImpl.java:106)
> 	at org.apache.pluto.container.impl.PortletResponseImpl.createElement(PortletResponseImpl.java:145)
> 	at org.apache.portals.gems.dojo.DojoPortletHelper.contributeScript(DojoPortletHelper.java:70)
> 	at org.apache.portals.gems.dojo.DojoPortletHelper.enableDojo(DojoPortletHelper.java:107)
> 	at org.apache.jetspeed.portlets.dojo.AbstractAdminDojoVelocityPortlet.doHeaders(AbstractAdminDojoVelocityPortlet.java:65)
> 	at javax.portlet.GenericPortlet.render(GenericPortlet.java:248)
> 	at org.apache.portals.bridges.velocity.GenericVelocityPortlet.render(GenericVelocityPortlet.java:164)
> 	at org.apache.jetspeed.portlet.PortletObjectProxy.proxyRender(PortletObjectProxy.java:244)
> 	at org.apache.jetspeed.portlet.PortletObjectProxy.invoke(PortletObjectProxy.java:159)
> 	at $Proxy26.render(Unknown Source)
> 	at org.apache.jetspeed.factory.JetspeedPortletInstance.render(JetspeedPortletInstance.java:110)
> 	at org.apache.jetspeed.container.services.JetspeedFilterChain.doFilter(JetspeedFilterChain.java:142)
> 	at org.apache.jetspeed.container.services.JetspeedFilterChain.processFilter(JetspeedFilterChain.java:92)
> 	at org.apache.jetspeed.container.services.JetspeedFilterManager.processFilter(JetspeedFilterManager.java:112)
> 	at org.apache.jetspeed.container.JetspeedContainerServlet.doGet(JetspeedContainerServlet.java:272)
> 	at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
> 	at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
> 	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
> 	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
> 	at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:630)
> 	at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:535)
> 	at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:472)
> 	at org.apache.jetspeed.container.invoker.ServletPortletInvoker.invoke(ServletPortletInvoker.java:165)
> 	at org.apache.jetspeed.container.invoker.JetspeedPortletInvokerService.render(JetspeedPortletInvokerService.java:127)
> 	at org.apache.pluto.container.impl.PortletContainerImpl.doRender(PortletContainerImpl.java:157)
> 	at org.apache.jetspeed.container.JetspeedPortletContainerWrapper.doRender(JetspeedPortletContainerWrapper.java:69)
> 	at org.apache.jetspeed.aggregator.impl.RenderingJobImpl.execute(RenderingJobImpl.java:183)
> 	at org.apache.jetspeed.aggregator.impl.PortletRendererImpl.renderNow(PortletRendererImpl.java:160)
> 	at org.apache.jetspeed.aggregator.impl.PortletRendererImpl.renderNow(PortletRendererImpl.java:138)
> 	at org.apache.jetspeed.aggregator.impl.PageAggregatorImpl.aggregateAndRender(PageAggregatorImpl.java:108)
> 	at org.apache.jetspeed.aggregator.impl.PageAggregatorImpl.aggregateAndRender(PageAggregatorImpl.java:103)
> 	at org.apache.jetspeed.aggregator.impl.PageAggregatorImpl.build(PageAggregatorImpl.java:77)
> 	at org.apache.jetspeed.aggregator.AggregatorValve.invoke(AggregatorValve.java:46)
> 	at org.apache.jetspeed.pipeline.JetspeedPipeline$Invocation.invokeNext(JetspeedPipeline.java:167)
> 	at org.apache.jetspeed.aggregator.HeaderAggregatorValve.invoke(HeaderAggregatorValve.java:53)
> 	at org.apache.jetspeed.pipeline.JetspeedPipeline$Invocation.invokeNext(JetspeedPipeline.java:167)
> 	at org.apache.jetspeed.decoration.DecorationValve.invoke(DecorationValve.java:137)
> 	at org.apache.jetspeed.pipeline.JetspeedPipeline$Invocation.invokeNext(JetspeedPipeline.java:167)
> 	at org.apache.jetspeed.resource.ResourceValveImpl.invoke(ResourceValveImpl.java:84)
> 	at org.apache.jetspeed.pipeline.JetspeedPipeline$Invocation.invokeNext(JetspeedPipeline.java:167)
> 	at org.apache.jetspeed.pipeline.valve.impl.ActionValveImpl.invoke(ActionValveImpl.java:139)
> 	at org.apache.jetspeed.pipeline.JetspeedPipeline$Invocation.invokeNext(JetspeedPipeline.java:167)
> 	at org.apache.jetspeed.container.ContainerValve.invoke(ContainerValve.java:88)
> 	at org.apache.jetspeed.pipeline.JetspeedPipeline$Invocation.invokeNext(JetspeedPipeline.java:167)
> 	at org.apache.jetspeed.container.PageHistoryValve.invoke(PageHistoryValve.java:108)
> 	at org.apache.jetspeed.pipeline.JetspeedPipeline$Invocation.invokeNext(JetspeedPipeline.java:167)
> 	at org.apache.jetspeed.profiler.impl.RefreshUserHomepageValveImpl.invoke(RefreshUserHomepageValveImpl.java:94)
> 	at org.apache.jetspeed.pipeline.JetspeedPipeline$Invocation.invokeNext(JetspeedPipeline.java:167)
> 	at org.apache.jetspeed.profiler.impl.ProfilerValveImpl.invoke(ProfilerValveImpl.java:251)
> 	at org.apache.jetspeed.pipeline.JetspeedPipeline$Invocation.invokeNext(JetspeedPipeline.java:167)
> 	at org.apache.jetspeed.security.impl.LoginValidationValveImpl.invoke(LoginValidationValveImpl.java:158)
> 	at org.apache.jetspeed.pipeline.JetspeedPipeline$Invocation.invokeNext(JetspeedPipeline.java:167)
> 	at org.apache.jetspeed.security.impl.PasswordCredentialValveImpl.invoke(PasswordCredentialValveImpl.java:151)
> 	at org.apache.jetspeed.pipeline.JetspeedPipeline$Invocation.invokeNext(JetspeedPipeline.java:167)
> 	at org.apache.jetspeed.localization.impl.LocalizationValveImpl.invoke(LocalizationValveImpl.java:170)
> 	at org.apache.jetspeed.pipeline.JetspeedPipeline$Invocation.invokeNext(JetspeedPipeline.java:167)
> 	at org.apache.jetspeed.security.impl.AbstractSecurityValve$1.run(AbstractSecurityValve.java:138)
> 	at java.security.AccessController.doPrivileged(Native Method)
> 	at javax.security.auth.Subject.doAsPrivileged(Subject.java:454)
> 	at org.apache.jetspeed.security.JSSubject.doAsPrivileged(JSSubject.java:179)
> 	at org.apache.jetspeed.security.impl.AbstractSecurityValve.invoke(AbstractSecurityValve.java:132)
> 	at org.apache.jetspeed.pipeline.JetspeedPipeline$Invocation.invokeNext(JetspeedPipeline.java:167)
> 	at org.apache.jetspeed.container.url.impl.PortalURLValveImpl.invoke(PortalURLValveImpl.java:67)
> 	at org.apache.jetspeed.pipeline.JetspeedPipeline$Invocation.invokeNext(JetspeedPipeline.java:167)
> 	at org.apache.jetspeed.capabilities.impl.CapabilityValveImpl.invoke(CapabilityValveImpl.java:127)
> 	at org.apache.jetspeed.pipeline.JetspeedPipeline$Invocation.invokeNext(JetspeedPipeline.java:167)
> 	at org.apache.jetspeed.pipeline.JetspeedPipeline.invoke(JetspeedPipeline.java:146)
> 	at org.apache.jetspeed.engine.JetspeedEngine.service(JetspeedEngine.java:225)
> 	at org.apache.jetspeed.engine.JetspeedServlet.doGet(JetspeedServlet.java:300)
> 	at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
> 	at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
> 	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
> 	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
> 	at org.apache.jetspeed.engine.servlet.XXSUrlAttackFilter.doFilter(XXSUrlAttackFilter.java:52)
> 	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
> 	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
> 	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
> 	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
> 	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:433)
> 	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
> 	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
> 	at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:568)
> 	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
> 	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286)
> 	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:845)
> 	at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
> 	at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
> 	at java.lang.Thread.run(Thread.java:595)
> Caused by: java.lang.ClassCastException: org.dom4j.DocumentFactory
> 	at org.dom4j.DocumentFactory.getInstance(DocumentFactory.java:97)
> 	at org.dom4j.tree.AbstractNode.<clinit>(AbstractNode.java:39)
> 	... 89 more
> Because dom4j's DocumentFactory depends on Class.forName() to manage a singleton inside,
it seems that there's classloader conflicting problem during cross context invocations.

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