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https://issues.apache.org/struts/browse/WW-3311?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=47007#action_47007
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Cimballi commented on WW-3311:
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In fact, I set params to null in a test method and that's how I encounter the
problem.
Don't you think it's better to have the same behaviour in Struts2 classes than
in XWork classes, instead of having everybody who encouters this problem
writing its own derived class ?
> NullPointerException in CheckboxInterceptor when parameters are null
> --------------------------------------------------------------------
>
> Key: WW-3311
> URL: https://issues.apache.org/struts/browse/WW-3311
> Project: Struts 2
> Issue Type: Bug
> Components: Core Interceptors
> Affects Versions: 2.1.6
> Environment: Struts 2.1.6, but no changes in 2.1.8
> Reporter: Cimballi
> Fix For: 2.2.0
>
>
> There is a NullPointerException in the CheckboxInterceptor when parameters
> are null at the following line :
> Set<Map.Entry> entries = parameters.entrySet();
> I don't know if "theorically" it should check or not for null parameters, but
> the XWork interceptors check it, so I think Struts2 interceptors should also
> check for null parameters.
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