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https://issues.apache.org/jira/browse/WICKET-4464?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13235473#comment-13235473
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Martin Grigorov commented on WICKET-4464:
-----------------------------------------
Consider upgrading to 1.5.x. There is no such problem there.
1.4.x most likely wont receive any bug fixes anymore. Only security fixes will
be applied in 1.4.x branch.
> AbstractTransformerBehavior breaks ajax requests in IE8
> -------------------------------------------------------
>
> Key: WICKET-4464
> URL: https://issues.apache.org/jira/browse/WICKET-4464
> Project: Wicket
> Issue Type: Bug
> Components: wicket
> Affects Versions: 1.4.20
> Reporter: Robert Keller
> Labels: Ajax, IE, WICKET-3633
>
> AbstractTransformerBehavior sets ´webResponse.setContentType("text/" +
> getMarkupType(component) + "; charset=" + encoding);´
> This delegates to the page and in our case usually returns "text/html".
> In ajax-request this overwrites the required setting for ajax "text/xml". If
> IE8 receives an ajax-response as "text/html" then in wicket-ajax.js:1049 the
> xmldoc = t.responseXml is null and the error is:
> "ERROR: Wicket.Ajax.Call.failure: Error while parsing response: Could not
> find root <ajax-response> element".
> This error was created by https://issues.apache.org/jira/browse/WICKET-3633.
> Possible un-/fixes:
> - Changing the markuptype on page level to "xml" in ajaxrequests might break
> functionality.
> + let only AbstractTransformerBehavior consider ajaxrequests and then set xml
> + at least: make
> org.apache.wicket.markup.html.border.MarkupComponentBorder.getMarkupType(Component)
> protected and not final!
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