BeanUtils ArrayIndexOutOfBoundsException on session timeout of form submit.

[Ka-Wai Chan <ka...@transcanada.com>]

Hello

I currently have arrays of objects in my Session Form object which gets 
populated by struts.  All is fine except when the session times out, 
Struts still wants to populate the arrays but can't because they aren't 
initialized to the right size anymore.  And the place where I handle 
session time out (BaseAction) is called after this happens.  Any 
suggestions on how to intercept this?  Do I have to extend the 
controller servlet?

Thanks
Ka-Wai

Here is the stack trace:


java.lang.ArrayIndexOutOfBoundsException
	at java.lang.reflect.Array.set(Native Method)
	at 
org.apache.commons.beanutils.PropertyUtils.setIndexedProperty(PropertyUtils.java:1468)
	at org.apache.commons.beanutils.BeanUtils.setProperty(BeanUtils.java:918)
	at org.apache.commons.beanutils.BeanUtils.populate(BeanUtils.java:729)
	at org.apache.struts.util.RequestUtils.populate(RequestUtils.java:1097)
	at 
org.apache.struts.action.RequestProcessor.processPopulate(RequestProcessor.java:798)
	at 
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:254)
	at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1422)
	at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:523)
	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(ApplicationFilterChain.java:247)
	at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
	at 
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:256)
	at 
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
	at 
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
	at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
	at 
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
	at 
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
	at 
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
	at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
	at 
org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2415)
	at 
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180)
	at 
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
	at 
org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:171)
	at 
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
	at 
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:172)
	at 
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
	at 
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
	at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
	at 
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:174)
	at 
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
	at 
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
	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:594)
	at 
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:392)
	at 
org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:565)
	at 
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:619)
	at java.lang.Thread.run(Thread.java:479)



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