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From Assaf Nehoray <ass...@yahoo.com>
Subject DynaValidatorActionForm.validate(DynaValidatorActionForm.java:115)
Date Fri, 25 Jun 2004 12:17:11 GMT
Dear user group,

I am having this constant exception thrown several
times a day. I am not able to reproduce it but I know
my visitors get it:

2004-06-24 18:45:00 StandardWrapperValve[action]:
Servlet.service() for servlet action threw exception
java.lang.NullPointerException
	at
org.apache.struts.validator.DynaValidatorActionForm.validate(DynaValidatorActionForm.java:115)
	at
org.apache.struts.action.RequestProcessor.processValidate(RequestProcessor.java:942)
	at
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:255)
	at
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
	at
org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:507)
	at
javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
	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
com.mycompany.clickstream.ClickstreamFilter.doFilter(ClickstreamFilter.java:42)
	at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:213)
	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.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492)
	at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
	at
org.apache.catalina.valves.RequestFilterValve.process(RequestFilterValve.java:343)
	at
org.apache.catalina.valves.RemoteAddrValve.invoke(RemoteAddrValve.java:131)
	at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
	at
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:577)
	at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
	at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
	at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
	at
org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2422)
	at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180)
	at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
	at
org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:171)
	at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
	at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:163)
	at
org.apache.catalina.core.StandardPipeline$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$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
	at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
	at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
	at
org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:199)
	at
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:828)
	at
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:700)
	at
org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:584)
	at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:683)
	at java.lang.Thread.run(Thread.java:534)

I am using a wizard like form (several pages). The
only clue I have is that I do not get this error on
pages in which the validator does not use the "page"
attribute. On multiple page forms I get this error. 

Anyone with a suggestion as how to solve it or further
look into it?

Thanx,

Assaf




		
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