Renaud,
Can you consistently reproduce it? If so, what are the Urls? Your
assessment that requestScope.service should not be null seems correct.
-Scott
Renaud Bruyeron wrote:
> Hi,
>
> I am running into a problem with the "gateway" mode of CAS 3.0.5.
> The client webapp always triggers a "gateway" roundtrip with CAS if it
> knows that its identity info is stale (for example when the HttpSession
> is created) so it can get the new identity.
>
> However, it triggers a NPE in some conditions. Below is an extract of
> the logs (in DEBUG) which shows the execution of the webflow, and the
> stacktrace when the externalRedirect endstate is reached:
>
> 2006-06-21 18:46:52,559 DEBUG
> [org.jasig.cas.web.flow.AutomaticCookiePathSetterAction] - <Action
> 'AutomaticCookiePathSetterAction' beginning execution>
> 2006-06-21 18:46:52,559 DEBUG
> [org.jasig.cas.web.flow.AutomaticCookiePathSetterAction] - <Action
> 'AutomaticCookiePathSetterAction' completed execution; result is 'success'>
> 2006-06-21 18:46:52,559 DEBUG
> [org.jasig.cas.web.flow.TicketGrantingTicketExistsAction] - <Action
> 'TicketGrantingTicketExistsAction' beginning execution>
> 2006-06-21 18:46:52,560 DEBUG
> [org.jasig.cas.web.flow.TicketGrantingTicketExistsAction] - <Action
> 'TicketGrantingTicketExistsAction' completed execution; result is
> 'ticketGrantingTicketExists'>
> 2006-06-21 18:46:52,560 DEBUG
> [org.jasig.cas.web.flow.HasServiceCheckAction] - <Action
> 'HasServiceCheckAction' beginning execution>
> 2006-06-21 18:46:52,560 DEBUG
> [org.jasig.cas.web.flow.HasServiceCheckAction] - <Action
> 'HasServiceCheckAction' completed execution; result is 'hasService'>
> 2006-06-21 18:46:52,561 DEBUG
> [org.jasig.cas.web.flow.RenewRequestCheckAction] - <Action
> 'RenewRequestCheckAction' beginning execution>
> 2006-06-21 18:46:52,561 DEBUG
> [org.jasig.cas.web.flow.RenewRequestCheckAction] - <Action
> 'RenewRequestCheckAction' completed execution; result is
> 'generateServiceTicket'>
> 2006-06-21 18:46:52,561 DEBUG
> [org.jasig.cas.web.flow.GenerateServiceTicketAction] - <Action
> 'GenerateServiceTicketAction' beginning execution>
> 2006-06-21 18:46:52,562 DEBUG
> [org.jasig.cas.ticket.registry.DefaultTicketRegistry] - <Attempting to
> retrieve ticket [TGT-3-0Vw02NvOVnLcK2DHQ4qElTfw641BV1nasgK-50]>
> 2006-06-21 18:46:52,562 DEBUG
> [org.jasig.cas.web.flow.GenerateServiceTicketAction] - <Action
> 'GenerateServiceTicketAction' completed execution; result is 'gateway'>
> 2006-06-21 18:46:52,563 ERROR
> [org.apache.catalina.core.ContainerBase.[Catalina].[xxxxx.f6.fr].[/cas].[cas]]
>
> - <Servlet.service() for servlet cas threw exception>
> java.lang.NullPointerException: target is null for method indexOf
> at ognl.OgnlRuntime.callMethod(OgnlRuntime.java:821)
> at ognl.ASTMethod.getValueBody(ASTMethod.java:75)
> at ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:170)
> at ognl.SimpleNode.getValue(SimpleNode.java:210)
> at ognl.ASTChain.getValueBody(ASTChain.java:109)
> at ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:170)
> at ognl.SimpleNode.getValue(SimpleNode.java:210)
> at ognl.ASTNotEq.getValueBody(ASTNotEq.java:49)
> at ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:170)
> at ognl.SimpleNode.getValue(SimpleNode.java:210)
> at ognl.ASTTest.getValueBody(ASTTest.java:49)
> at ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:170)
> at ognl.SimpleNode.getValue(SimpleNode.java:210)
> at ognl.Ognl.getValue(Ognl.java:333)
> at ognl.Ognl.getValue(Ognl.java:310)
> at
> org.springframework.binding.expression.support.OgnlExpression.evaluateAgainst(OgnlExpression.java:60)
> at
> org.springframework.binding.expression.support.CompositeStringExpression.evaluateAgainst(CompositeStringExpression.java:33)
> at
> org.springframework.webflow.support.ExternalRedirectSelector.makeSelection(ExternalRedirectSelector.java:73)
> at org.springframework.webflow.EndState.doEnter(EndState.java:127)
> at org.springframework.webflow.State.enter(State.java:192)
> at
> org.springframework.webflow.Transition.execute(Transition.java:216)
> at
> org.springframework.webflow.TransitionableState.onEvent(TransitionableState.java:80)
>
> My guess is that ${requestScope.service} is null, even though it should
> not be since hasServiceCheckAction returned "hasService".
> Before I go digging inside webflow and CAS, do you have any idea on what
> could be the problem?
>
> - Renaud
>
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> http://tp.its.yale.edu/mailman/listinfo/cas-dev
>
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