All,
I am using Jetspeed 2.1.3
I am using JSP instead of velocity for my layout decorators.
I am trying to render a portlet in my layout decorator using the following
line of code in header.jsp
_jpt.renderPortletEntity("theClock","j2-admin::DateTimePortlet")
But its resulting in a blank page.
Looking at the jetspeed.log, I am seeing the following NullPointerException
error.
I greatly appreciate any help regarding how to solve this.
Thanks
Prabha
2009-08-20 22:38:53,343 [http-8080-Processor24] ERROR
org.apache.jetspeed.aggregator.impl.RenderingJobImpl - Error rendering
portlet OID dp-1
javax.portlet.PortletException
at
org.apache.jetspeed.dispatcher.JetspeedRequestDispatcher.include(JetspeedRequestDispatcher.java:103)
at
org.apache.portals.bridges.common.GenericServletPortlet.doView(GenericServletPortlet.java:364)
at
org.apache.jetspeed.portlets.layout.LayoutPortlet.doView(LayoutPortlet.java:307)
at
org.apache.jetspeed.portlets.layout.MultiColumnPortlet.doView(MultiColumnPortlet.java:181)
at javax.portlet.GenericPortlet.doDispatch(GenericPortlet.java:247)
at javax.portlet.GenericPortlet.render(GenericPortlet.java:175)
at
org.apache.jetspeed.factory.JetspeedPortletInstance.render(JetspeedPortletInstance.java:103)
at
org.apache.jetspeed.container.invoker.LocalPortletInvoker.invoke(LocalPortletInvoker.java:192)
at
org.apache.jetspeed.container.invoker.LocalPortletInvoker.render(LocalPortletInvoker.java:117)
at
org.apache.pluto.PortletContainerImpl.renderPortlet(PortletContainerImpl.java:119)
at
org.apache.jetspeed.container.JetspeedPortletContainerWrapper.renderPortlet(JetspeedPortletContainerWrapper.java:121)
at
org.apache.jetspeed.aggregator.impl.RenderingJobImpl.execute(RenderingJobImpl.java:271)
at
org.apache.jetspeed.aggregator.impl.PortletRendererImpl.renderNow(PortletRendererImpl.java:228)
at
org.apache.jetspeed.aggregator.impl.PageAggregatorImpl.aggregateAndRender(PageAggregatorImpl.java:147)
at
org.apache.jetspeed.aggregator.impl.PageAggregatorImpl.build(PageAggregatorImpl.java:78)
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:144)
at
org.apache.jetspeed.pipeline.JetspeedPipeline$Invocation.invokeNext(JetspeedPipeline.java:167)
at
org.apache.jetspeed.resource.ResourceValveImpl.invoke(ResourceValveImpl.java:130)
at
org.apache.jetspeed.pipeline.JetspeedPipeline$Invocation.invokeNext(JetspeedPipeline.java:167)
at
org.apache.jetspeed.pipeline.valve.impl.ActionValveImpl.invoke(ActionValveImpl.java:207)
at
org.apache.jetspeed.pipeline.JetspeedPipeline$Invocation.invokeNext(JetspeedPipeline.java:167)
at
org.apache.jetspeed.container.ContainerValve.invoke(ContainerValve.java:109)
at
org.apache.jetspeed.pipeline.JetspeedPipeline$Invocation.invokeNext(JetspeedPipeline.java:167)
at
org.apache.jetspeed.container.PageHistoryValve.invoke(PageHistoryValve.java:108)
at
org.apache.jetspeed.pipeline.JetspeedPipeline$Invocation.invokeNext(JetspeedPipeline.java:167)
at
org.apache.jetspeed.profiler.impl.ProfilerValveImpl.invoke(ProfilerValveImpl.java:248)
at
org.apache.jetspeed.pipeline.JetspeedPipeline$Invocation.invokeNext(JetspeedPipeline.java:167)
at
org.apache.jetspeed.security.impl.LoginValidationValveImpl.invoke(LoginValidationValveImpl.java:159)
at
org.apache.jetspeed.pipeline.JetspeedPipeline$Invocation.invokeNext(JetspeedPipeline.java:167)
at
org.apache.jetspeed.security.impl.PasswordCredentialValveImpl.invoke(PasswordCredentialValveImpl.java:150)
at
org.apache.jetspeed.pipeline.JetspeedPipeline$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$Invocation.invokeNext(JetspeedPipeline.java:167)
at
org.apache.jetspeed.capabilities.impl.CapabilityValveImpl.invoke(CapabilityValveImpl.java:126)
at
org.apache.jetspeed.pipeline.JetspeedPipeline$Invocation.invokeNext(JetspeedPipeline.java:167)
at
org.apache.jetspeed.pipeline.JetspeedPipeline.invoke(JetspeedPipeline.java:146)
at
org.apache.jetspeed.engine.JetspeedEngine.service(JetspeedEngine.java:227)
at
org.apache.jetspeed.engine.JetspeedServlet.doGet(JetspeedServlet.java:242)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:690)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
at
org.apache.jetspeed.engine.servlet.XXSUrlAttackFilter.doFilter(XXSUrlAttackFilter.java:52)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:210)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:174)
at
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:433)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108)
at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:151)
at
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:870)
at
org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665)
at
org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528)
at
org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81)
at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:685)
at java.lang.Thread.run(Thread.java:595)
Caused by: java.lang.NullPointerException
at org.apache.pluto.tags.NamespaceTag.doStartTag(NamespaceTag.java:45)
at
org.apache.jsp.WEB_002dINF.templates.layout.html.columns.layout_jsp._jspx_meth_portlet_005fnamespace_005f0(layout_jsp.java:1255)
at
org.apache.jsp.WEB_002dINF.templates.layout.html.columns.layout_jsp._jspService(layout_jsp.java:437)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:98)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:328)
at
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:315)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:265)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
at
org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:691)
at
org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:594)
at
org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:505)
at
org.apache.jetspeed.dispatcher.JetspeedRequestDispatcher.include(JetspeedRequestDispatcher.java:73)
... 69 more
Nested Exception is
java.lang.NullPointerException
at org.apache.pluto.tags.NamespaceTag.doStartTag(NamespaceTag.java:45)
at
org.apache.jsp.WEB_002dINF.templates.layout.html.columns.layout_jsp._jspx_meth_portlet_005fnamespace_005f0(layout_jsp.java:1255)
at
org.apache.jsp.WEB_002dINF.templates.layout.html.columns.layout_jsp._jspService(layout_jsp.java:437)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:98)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:328)
at
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:315)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:265)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
at
org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:691)
at
org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:594)
at
org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:505)
at
org.apache.jetspeed.dispatcher.JetspeedRequestDispatcher.include(JetspeedRequestDispatcher.java:73)
at
org.apache.portals.bridges.common.GenericServletPortlet.doView(GenericServletPortlet.java:364)
at
org.apache.jetspeed.portlets.layout.LayoutPortlet.doView(LayoutPortlet.java:307)
at
org.apache.jetspeed.portlets.layout.MultiColumnPortlet.doView(MultiColumnPortlet.java:181)
at javax.portlet.GenericPortlet.doDispatch(GenericPortlet.java:247)
at javax.portlet.GenericPortlet.render(GenericPortlet.java:175)
at
org.apache.jetspeed.factory.JetspeedPortletInstance.render(JetspeedPortletInstance.java:103)
at
org.apache.jetspeed.container.invoker.LocalPortletInvoker.invoke(LocalPortletInvoker.java:192)
at
org.apache.jetspeed.container.invoker.LocalPortletInvoker.render(LocalPortletInvoker.java:117)
at
org.apache.pluto.PortletContainerImpl.renderPortlet(PortletContainerImpl.java:119)
at
org.apache.jetspeed.container.JetspeedPortletContainerWrapper.renderPortlet(JetspeedPortletContainerWrapper.java:121)
at
org.apache.jetspeed.aggregator.impl.RenderingJobImpl.execute(RenderingJobImpl.java:271)
at
org.apache.jetspeed.aggregator.impl.PortletRendererImpl.renderNow(PortletRendererImpl.java:228)
at
org.apache.jetspeed.aggregator.impl.PageAggregatorImpl.aggregateAndRender(PageAggregatorImpl.java:147)
at
org.apache.jetspeed.aggregator.impl.PageAggregatorImpl.build(PageAggregatorImpl.java:78)
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:144)
at
org.apache.jetspeed.pipeline.JetspeedPipeline$Invocation.invokeNext(JetspeedPipeline.java:167)
at
org.apache.jetspeed.resource.ResourceValveImpl.invoke(ResourceValveImpl.java:130)
at
org.apache.jetspeed.pipeline.JetspeedPipeline$Invocation.invokeNext(JetspeedPipeline.java:167)
at
org.apache.jetspeed.pipeline.valve.impl.ActionValveImpl.invoke(ActionValveImpl.java:207)
at
org.apache.jetspeed.pipeline.JetspeedPipeline$Invocation.invokeNext(JetspeedPipeline.java:167)
at
org.apache.jetspeed.container.ContainerValve.invoke(ContainerValve.java:109)
at
org.apache.jetspeed.pipeline.JetspeedPipeline$Invocation.invokeNext(JetspeedPipeline.java:167)
at
org.apache.jetspeed.container.PageHistoryValve.invoke(PageHistoryValve.java:108)
at
org.apache.jetspeed.pipeline.JetspeedPipeline$Invocation.invokeNext(JetspeedPipeline.java:167)
at
org.apache.jetspeed.profiler.impl.ProfilerValveImpl.invoke(ProfilerValveImpl.java:248)
at
org.apache.jetspeed.pipeline.JetspeedPipeline$Invocation.invokeNext(JetspeedPipeline.java:167)
at
org.apache.jetspeed.security.impl.LoginValidationValveImpl.invoke(LoginValidationValveImpl.java:159)
at
org.apache.jetspeed.pipeline.JetspeedPipeline$Invocation.invokeNext(JetspeedPipeline.java:167)
at
org.apache.jetspeed.security.impl.PasswordCredentialValveImpl.invoke(PasswordCredentialValveImpl.java:150)
at
org.apache.jetspeed.pipeline.JetspeedPipeline$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$Invocation.invokeNext(JetspeedPipeline.java:167)
at
org.apache.jetspeed.capabilities.impl.CapabilityValveImpl.invoke(CapabilityValveImpl.java:126)
at
org.apache.jetspeed.pipeline.JetspeedPipeline$Invocation.invokeNext(JetspeedPipeline.java:167)
at
org.apache.jetspeed.pipeline.JetspeedPipeline.invoke(JetspeedPipeline.java:146)
at
org.apache.jetspeed.engine.JetspeedEngine.service(JetspeedEngine.java:227)
at
org.apache.jetspeed.engine.JetspeedServlet.doGet(JetspeedServlet.java:242)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:690)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
at
org.apache.jetspeed.engine.servlet.XXSUrlAttackFilter.doFilter(XXSUrlAttackFilter.java:52)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:210)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:174)
at
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:433)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108)
at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:151)
at
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:870)
at
org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665)
at
org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528)
at
org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81)
at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:685)
at java.lang.Thread.run(Thread.java:595)
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