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https://issues.apache.org/jira/browse/WW-4479?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14370284#comment-14370284
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Jasper Rosenberg commented on WW-4479:
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Yes, that stackoverflow post describes the bug. It's a relatively easy to fix
in OgnlRuntime.getStaticField() though.
> Ognl can't access static field on enum
> --------------------------------------
>
> Key: WW-4479
> URL: https://issues.apache.org/jira/browse/WW-4479
> Project: Struts 2
> Issue Type: Bug
> Components: Expression Language
> Affects Versions: 2.3.20
> Reporter: Jasper Rosenberg
> Labels: ognl
> Fix For: 2.5
>
>
> You can use an ognl expression to access a static field or an enum field, but
> you can't access a static field on an enum.
> @com.myco.MyEnum@MY_STATIC_FIELD
> blows up with:
> Caused by: java.lang.IllegalArgumentException: No enum constant
> com.myco.MyEnum.MY_STATIC_FIELD
> OgnlRuntime.getStaticField() needs to check for both enum field name and
> static field name for enums.
> This is particularly annoying now with ognl static method invocation
> deprecated.
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