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https://issues.apache.org/jira/browse/WW-4170?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14055740#comment-14055740
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Jasper Rosenberg commented on WW-4170:
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Looks like it should work, thanks!
> Allow String arrays/iterables to be passed as params to redirectAction result
> -----------------------------------------------------------------------------
>
> Key: WW-4170
> URL: https://issues.apache.org/jira/browse/WW-4170
> Project: Struts 2
> Issue Type: Improvement
> Components: Other
> Affects Versions: 2.3.15.1
> Reporter: Jasper Rosenberg
> Labels: result
> Fix For: 2.3.18
>
>
> It would be really nice to be able to have a result like:
> {code:xml}
> <result type="redirectAction">
> <param name="actionName">doit</param>
> <param name=actionMessages>${actionMessages}</param>
> </result>
> {code}
> Where actionMessages is the result of getActionMessages() from a
> ValidationAware action, and has more than one message.
> And have that generate a url like:
> http://myco.com/doit.action?actionMessages=Message+1&actionMessages=Message+2
> Rather than convert the result into the toString of the collection which then
> can't be interpreted by struts on the other end as a collection.
> Looking at ServletRedirectResult.doExecute(), it does use
> urlHelper.buildParametersString() which is array/iterable aware, so the trick
> would be to allow the parsing of the parameter value to be a String[] or
> Iterable<String> (and have the ParsedValueEvaluator run against the contents).
> We'd probably only want to support this functionality for the
> ServletActionRedirectResult even though it would have to be implemented at
> the ServletRedirectResult layer.
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