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https://issues.apache.org/jira/browse/WW-5031?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16941589#comment-16941589
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Markus Fischer commented on WW-5031:
------------------------------------
Let me know, if I shall test an updated version or snapshot of OGNL/Struts. The
warning persists on Java 13. So at least there has nothing been removed in the
JDK that would hinder OGNL to work under Java 13.
> OGNL: An illegal reflective access operation has occurred
> ---------------------------------------------------------
>
> Key: WW-5031
> URL: https://issues.apache.org/jira/browse/WW-5031
> Project: Struts 2
> Issue Type: Bug
> Components: Core
> Affects Versions: 2.5.20
> Environment: Java 11 / Linux / test environment on eclipse / Tomcat
> 8.5
> Reporter: Markus Fischer
> Priority: Minor
> Fix For: 2.5.21, 2.6
>
>
> Running Struts on Java 11 gives a new warning about illegal reflection, not
> present on Java 8:
> WARNING: An illegal reflective access operation has occurred
> WARNING: Illegal reflective access by ognl.OgnlRuntime
> ([file:/.../workspace/.../.metadata/.plugins/org.eclipse.wst.server.core/tmp0/wtpwebapps/.../WEB-INF/lib/ognl-3.1.21.jar|file:///.../workspace/SC/.metadata/.plugins/org.eclipse.wst.server.core/tmp0/wtpwebapps/.../WEB-INF/lib/ognl-3.1.21.jar])
> to method java.util.HashMap$Node.getKey()
> WARNING: Please consider reporting this to the maintainers of
> ognl.OgnlRuntime
> WARNING: Use --illegal-access=warn to enable warnings of further illegal
> reflective access operations
> WARNING: All illegal access operations will be denied in a future release
> The warning appears after using the following tag in a JSP (name of
> properties changed):
> <s:select name="item" key="item.key" list="items" />
> The corresponding Action contains:
> private Map<Long, String> items = new LinkedHashMap<>();
>
>
>
>
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