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https://issues.apache.org/jira/browse/WICKET-278?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12472354
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Alastair Maw commented on WICKET-278:
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If I put a hack in Objects.sizeof to call objectToByteArray() when it hits a
NotSerializableException I get one of these:
17:17:58.175 ERROR Error serializing object class
wicket.markup.html.basic.Label [object=[Component id = pageTitleForHead, page =
<No Page>, path = pageTitleForHead.Label]] -
org.apache.commons.logging.impl.SLF4JLog.error(SLF4JLog.java:171)
wicket.util.io.SerializableChecker$WicketNotSerializableException: Unable to
serialize class: wicket.response.StringResponse
Field hierarchy is:
pageTitleForHead [class=wicket.markup.html.basic.Label, path=pageTitleForHead]
private wicket.model.IModel wicket.Component.model
[class=wicket.model.PropertyModel]
private java.lang.Object wicket.model.AbstractPropertyModel.nestedModel
[class=com.foo.Page, path=1]
private java.lang.Object wicket.MarkupContainer.children
[class=[Lwicket.Component;]
private java.util.List
wicket.extensions.markup.html.tabs.TabbedPanel.tabs[write:1][write:4][write:6][write:8][10]
[class=wicket.markup.html.internal.HtmlHeaderContainer, path=1:<auto>_header]
private wicket.markup.html.IHeaderResponse
wicket.markup.html.internal.HtmlHeaderContainer.headerResponse
[class=wicket.markup.html.internal.HeaderResponse]
private wicket.Response
wicket.markup.html.internal.HeaderResponse.response
[class=wicket.response.StringResponse] <----- field that is not serializable
I'm still not sure what's going on. :-(
> Error pages for HeaderContributor errors are broken
> ---------------------------------------------------
>
> Key: WICKET-278
> URL: https://issues.apache.org/jira/browse/WICKET-278
> Project: Wicket
> Issue Type: Bug
> Affects Versions: 1.3
> Reporter: Alastair Maw
>
> This manifests itself with lots of java.io.NotSerializableException:
> wicket.response.StringResponse and errors like this:
> 08:58:09,083 WARN Objects:1287 - Size of failed of object:
> wicket.markup.html.HeaderPartContainer
> Al says:
> The errors are caused by the Wicket exception page (which is why there are a
> million components - they're all the Labels for the various
> components/traces/whatever).
> This is what I think goes wrong:
> HtmlHeaderContainer throws an exception while rendering, or something, such
> that its onDetach() is never called on it. This causes the reference it has
> to headerResponse to never be set to null. It therefore has a ref to a
> HeaderResponse, which has a ref to the Response object itself.
> We need to fix it so that onDetach() is always called, I guess. Probably need
> to work out where to put the try {} finally {}, essentially.
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