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https://issues.apache.org/jira/browse/WW-5297?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17705863#comment-17705863
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nikos dimitrakas commented on WW-5297:
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I tested a little more, and this has nothing to do with the decorator or
sitemesh. It is any tag that is a UIBean that causes this if the session has
been invalidated. I tried with an s:actionerror and got the same error. Things
like s:property and s:text work fine though, since they are not UIBeans.
> Decorator not working after invalidating session
> ------------------------------------------------
>
> Key: WW-5297
> URL: https://issues.apache.org/jira/browse/WW-5297
> Project: Struts 2
> Issue Type: Bug
> Components: Core Tags, Plugin - SiteMesh
> Affects Versions: 6.1.2
> Reporter: nikos dimitrakas
> Priority: Major
>
> When trying to upgrade from 2.5 to 6.1.2 I get a strange behaviour when
> decorating a jsp.
> I have an action that is used to log out a user. The action is basically only
> invalidating the session and then goes to the jsp. One of the interceptors is
> using sitemesh and applies the specified decorator.
> With Struts 2.5 this worked fine. But with Struts 6.1.2 (probably all the
> 6.x) I get an error "Session already invalidated" when getAttribute is called
> from org.apache.struts2.dispatcher.SessionMap. Here is the relevant part of
> the stacktrace:
> Caused by: java.lang.IllegalStateException: getAttribute: Session already
> invalidated
> at
> org.apache.catalina.session.StandardSession.getAttribute(StandardSession.java:1148)
> at
> org.apache.catalina.session.StandardSessionFacade.getAttribute(StandardSessionFacade.java:102)
> at org.apache.struts2.dispatcher.SessionMap.get(SessionMap.java:157)
> at org.apache.struts2.components.UIBean.evaluateParams(UIBean.java:879)
> at org.apache.struts2.components.Head.evaluateParams(Head.java:71)
> at org.apache.struts2.components.UIBean.end(UIBean.java:550)
> at
> org.apache.struts2.views.jsp.ComponentTagSupport.doEndTag(ComponentTagSupport.java:40)
> There is nothing about this changed behaviour in the migration guide from
> Struts 2.5 to 6. Is this a bug introduced in 6.x? Or is this by design?
> From what I can see, the error occurs when an s:head inside the decorator is
> evaluated.
>
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