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https://issues.apache.org/jira/browse/WW-4831?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Mitth'raw'nuruodo updated WW-4831:
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Summary: Array-of-null parameters are converted to string "null" (was:
Array-of-null parameters are converted to arrays containing "null")
> Array-of-null parameters are converted to string "null"
> -------------------------------------------------------
>
> Key: WW-4831
> URL: https://issues.apache.org/jira/browse/WW-4831
> Project: Struts 2
> Issue Type: Bug
> Components: Core
> Affects Versions: 2.5.12
> Reporter: Mitth'raw'nuruodo
> Assignee: Lukasz Lenart
> Fix For: 2.5.13
>
>
> The {{com.opensymphony.xwork2.conversion.impl.StringConverter}} class, since
> Struts 2.5.11, incorrectly handles arrays containing null; it converts them
> to arrays containing the string "null" (using {{String.valueOf}}).
> This is breaking one of our applications; some pages are OK, but on other
> pages, every non-provided field is populated with the String "null".
> This is a similar issue to WW-4737, but occurring in different code.
> Please ensure that conversion to String always uses the two-argument version
> of {{Objects.toString}}, which preserves nulls, rather than
> {{String.valueOf}}, which converts them to the four-letter string "null".
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