NPE when refreshing page after restart --------------------------------------
Key: JS2-216 URL: http://issues.apache.org/jira/browse/JS2-216 Project: Jetspeed 2 Type: Bug Components: Deployment Versions: 2.0-M1 Environment: JDK 1.4, Windows XP, Tomcat 5 Reporter: Howard M. Lewis Ship I've had to frequently stop/restart Tomcat to pick up some changes to portlets (or rather, auxilliary classes used by the portlets). If, after stopping and restarting Tomcat, I refresh the portal web page (i.e., with a URL like http://localhost:8080/jetspeed/portal/_ns:YWRwLTE5fGMwfGQx/), I get: VelocityViewServlet : Error processing the template java.lang.NullPointerException at org.apache.jetspeed.velocity.JetspeedVelocityViewServlet.getVelocityEngine(JetspeedVelocityViewServlet.java:296) at org.apache.jetspeed.velocity.JetspeedVelocityViewServlet.getTemplate(JetspeedVelocityViewServlet.java:208) at org.apache.velocity.tools.view.servlet.VelocityViewServlet.handleRequest(Unknown Source) at org.apache.portals.bridges.velocity.BridgesVelocityViewServlet.handleRequest(BridgesVelocityViewServlet.java:85) at org.apache.jetspeed.velocity.JetspeedVelocityViewServlet.handleRequest(JetspeedVelocityViewServlet.java:186) at org.apache.velocity.tools.view.servlet.VelocityViewServlet.doRequest(Unknown Source) at org.apache.velocity.tools.view.servlet.VelocityViewServlet.doGet(Unknown Source) at javax.servlet.http.HttpServlet.service(HttpServlet.java:689) at javax.servlet.http.HttpServlet.service(HttpServlet.java:802) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157) at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:704) at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:590) at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:510) at org.apache.jetspeed.container.JetspeedContainerServlet.doGet(JetspeedContainerServlet.java:259) at javax.servlet.http.HttpServlet.service(HttpServlet.java:689) at javax.servlet.http.HttpServlet.service(HttpServlet.java:802) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157) at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:704) at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:590) at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:510) at org.apache.jetspeed.container.invoker.ServletPortletInvoker.invoke(ServletPortletInvoker.java:213) at org.apache.jetspeed.container.invoker.ServletPortletInvoker.render(ServletPortletInvoker.java:124) at org.apache.pluto.PortletContainerImpl.renderPortlet(PortletContainerImpl.java:103) at org.apache.jetspeed.container.JetspeedPortletContainerWrapper.renderPortlet(JetspeedPortletContainerWrapper.java:88) at org.apache.jetspeed.aggregator.impl.PortletRendererImpl.renderNow(PortletRendererImpl.java:110) at org.apache.jetspeed.aggregator.impl.PageAggregatorImpl.build(PageAggregatorImpl.java:251) at org.apache.jetspeed.aggregator.AggregatorValve.invoke(AggregatorValve.java:48) at org.apache.jetspeed.pipeline.JetspeedPipeline.invokeNext(JetspeedPipeline.java:209) at org.apache.jetspeed.pipeline.valve.impl.ActionValveImpl.invoke(ActionValveImpl.java:117) at org.apache.jetspeed.pipeline.JetspeedPipeline.invokeNext(JetspeedPipeline.java:209) at org.apache.jetspeed.container.ContainerValve.invoke(ContainerValve.java:76) at org.apache.jetspeed.pipeline.JetspeedPipeline.invokeNext(JetspeedPipeline.java:209) at org.apache.jetspeed.profiler.impl.ProfilerValveImpl.invoke(ProfilerValveImpl.java:133) at org.apache.jetspeed.pipeline.JetspeedPipeline.invokeNext(JetspeedPipeline.java:209) at org.apache.jetspeed.security.impl.PasswordCredentialValveImpl.invoke(PasswordCredentialValveImpl.java:139) at org.apache.jetspeed.pipeline.JetspeedPipeline.invokeNext(JetspeedPipeline.java:209) at org.apache.jetspeed.security.impl.AbstractSecurityValve$1.run(AbstractSecurityValve.java:108) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAsPrivileged(Subject.java:437) at org.apache.jetspeed.security.impl.AbstractSecurityValve.invoke(AbstractSecurityValve.java:102) at org.apache.jetspeed.pipeline.JetspeedPipeline.invokeNext(JetspeedPipeline.java:209) at org.apache.jetspeed.container.url.impl.PortalURLValveImpl.invoke(PortalURLValveImpl.java:55) at org.apache.jetspeed.pipeline.JetspeedPipeline.invokeNext(JetspeedPipeline.java:209) at org.apache.jetspeed.capabilities.impl.CapabilityValveImpl.invoke(CapabilityValveImpl.java:127) at org.apache.jetspeed.pipeline.JetspeedPipeline.invokeNext(JetspeedPipeline.java:209) at org.apache.jetspeed.localization.impl.LocalizationValveImpl.invoke(LocalizationValveImpl.java:73) at org.apache.jetspeed.pipeline.JetspeedPipeline.invokeNext(JetspeedPipeline.java:209) at org.apache.jetspeed.pipeline.JetspeedPipeline.invoke(JetspeedPipeline.java:191) at org.apache.jetspeed.engine.AbstractEngine.service(AbstractEngine.java:259) at org.apache.jetspeed.engine.JetspeedServlet.doGet(JetspeedServlet.java:225) at javax.servlet.http.HttpServlet.service(HttpServlet.java:689) at javax.servlet.http.HttpServlet.service(HttpServlet.java:802) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:214) at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520) at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:198) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:152) at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:462) at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:137) at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:118) at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520) at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:929) at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:799) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:705) at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:577) at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:683) at java.lang.Thread.run(Thread.java:534) I prefer it to work, or to produce an error message about the URL being out of date, but certainly not an exception. -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://issues.apache.org/jira/secure/Administrators.jspa - If you want more information on JIRA, or have a bug to report see: 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