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https://issues.apache.org/jira/browse/WW-4572?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15642519#comment-15642519
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Glen Mazza commented on WW-4572:
--------------------------------
This change appears to break backwards compatibility, upon upgrade from Struts
2.5.2 to 2.5.5 the following code no longer worked:
<s:property value='%{#parameters.weblogId}'/> // returns empty string.
Apparent solution (haven't tested yet) is here:
http://stackoverflow.com/a/40365187/1207540
> Add dedicated class to represent Http Parameters
> ------------------------------------------------
>
> Key: WW-4572
> URL: https://issues.apache.org/jira/browse/WW-4572
> Project: Struts 2
> Issue Type: Improvement
> Components: "New" API
> Affects Versions: 2.3.24
> Reporter: Lukasz Lenart
> Assignee: Lukasz Lenart
> Fix For: 2.5.5
>
>
> Right now {{parameters}} are represented by a {{Map}} and a lot of logic is
> duplicated. There is no way to check if given parameter was already evaluated.
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