InvocationTargetExceptions happen when Method.invoke is used during reflection and the invoked method throws *any* exception. To hunt it down, you'll need to do trial and error, or hack PropertyUtils to spit out a stack trace on the exception it catches before rethrowing it. Anyone have any better idea?
-----Original Message----- From: Matt Raible [mailto:[EMAIL PROTECTED]] Sent: Tuesday, September 24, 2002 3:15 PM To: [EMAIL PROTECTED] Subject: Tomcat 4.1.x I'm trying to upgrade my struts-based app (1.1b2) from Tomcat 4.0.4 to 4.1.10 and now 4.1.12 after today's announcement and JDK 1.4.1. However, I'm getting the following error that didn't occur on 4.0.4 with JDK 1.4.0_01 - any rough hints or ideas? java.lang.reflect.InvocationTargetException at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.jav a:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessor Impl.java:25) at java.lang.reflect.Method.invoke(Method.java:324) at org.apache.commons.beanutils.PropertyUtils.getIndexedProperty(PropertyUt ils.java:475) at org.apache.commons.beanutils.PropertyUtils.getIndexedProperty(PropertyUt ils.java:410) at org.apache.commons.beanutils.PropertyUtils.getNestedProperty(PropertyUti ls.java:749) at org.apache.commons.beanutils.PropertyUtils.getProperty(PropertyUtils.jav a:780) at org.apache.commons.beanutils.BeanUtils.setProperty(BeanUtils.java:793) at org.apache.commons.beanutils.BeanUtils.populate(BeanUtils.java:726) at org.apache.struts.util.RequestUtils.populate(RequestUtils.java:978) at org.apache.struts.action.RequestProcessor.processPopulate(RequestProcess or.java:786) at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java: 246) at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1292) at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:510) at javax.servlet.http.HttpServlet.service(HttpServlet.java:760) at javax.servlet.http.HttpServlet.service(HttpServlet.java:853) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Applica tionFilterChain.java:247) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilt erChain.java:193) at com.onpoint.webapp.ActionFilter.doFilter(ActionFilter.java:296) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Applica tionFilterChain.java:213) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilt erChain.java:193) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValv e.java:260) at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.i nvokeNext(StandardPipeline.java:643) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:4 80) at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValv e.java:191) at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.i nvokeNext(StandardPipeline.java:643) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(Authenticator Base.java:527) at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.i nvokeNext(StandardPipeline.java:641) at org.apache.catalina.valves.CertificatesValve.invoke(CertificatesValve.ja va:246) at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.i nvokeNext(StandardPipeline.java:641) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:4 80) at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995) at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:239 7) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java :180) at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.i nvokeNext(StandardPipeline.java:643) at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherVa lve.java:170) at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.i nvokeNext(StandardPipeline.java:641) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java :171) at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.i nvokeNext(StandardPipeline.java:641) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:4 80) at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve. java:174) at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.i nvokeNext(StandardPipeline.java:643) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:4 80) at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995) at org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:223) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:40 5) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processC onnection(Http11Protocol.java:380) at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:50 8) at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool .java:533) at java.lang.Thread.run(Thread.java:536) Caused by: java.lang.IndexOutOfBoundsException: Index: 0, Size: 0 at java.util.ArrayList.RangeCheck(ArrayList.java:508) at java.util.ArrayList.get(ArrayList.java:320) at 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