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https://issues.apache.org/struts/browse/WW-3150?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=46337#action_46337
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Wes Wannemacher commented on WW-3150:
-------------------------------------
sorry, you are right. I had even looked at that and thought it might NPE as
well. Anyways, I changed the Map implementation in a different unit test (you
can check the SVN diff to see which one) and sure enough an NPE cropped up, so
hopefully this'll be squashed out for good now.
> TokenSessionStoreInterceptor fails with NPE when no token is provided.
> ----------------------------------------------------------------------
>
> Key: WW-3150
> URL: https://issues.apache.org/struts/browse/WW-3150
> Project: Struts 2
> Issue Type: Bug
> Components: Core Interceptors
> Affects Versions: 2.1.6
> Environment: N/A
> Reporter: James Peltzer
> Assignee: Wes Wannemacher
> Fix For: 2.1.7
>
>
> TokenSessionStoreInterceptor fails when no token is provided.
> java.lang.NullPointerException at java.util.TreeMap.getEntry(Unknown Source)
> at java.util.TreeMap.get(Unknown Source) at
> org.apache.struts2.util.TokenHelper.getToken(TokenHelper.java:101) at
> org.apache.struts2.interceptor.TokenSessionStoreInterceptor.handleInvalidToken(TokenSessionStoreInterceptor.java:117)
> at
> org.apache.struts2.interceptor.TokenInterceptor.doIntercept(TokenInterceptor.java:141)
> at
> com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87)
>
> ...
> It looks like it could be solved if the TokenHelper class checks to make sure
> it isn't trying to look up a null token name and just returns null
> immediately.
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