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https://issues.apache.org/jira/browse/WICKET-4293?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13170939#comment-13170939
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Martin Grigorov commented on WICKET-4293:
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You didn't pay attention then ;-)
Connections#close() no more does this.
Thanks for your help!
> UrlResourceStream closes incorrect InputStream causing stacktraces on
> undeploy on GlassFish
> -------------------------------------------------------------------------------------------
>
> Key: WICKET-4293
> URL: https://issues.apache.org/jira/browse/WICKET-4293
> Project: Wicket
> Issue Type: Bug
> Components: wicket
> Affects Versions: 1.5.3
> Environment: GlassFish v2.1.1 and GlassFish v.3.1
> java version "1.6.0_29"
> Java(TM) SE Runtime Environment (build 1.6.0_29-b11-402-11M3527)
> Java HotSpot(TM) 64-Bit Server VM (build 20.4-b02-402, mixed mode)
> Mac OS X 10.7.2
> Reporter: Pepijn de Geus
> Assignee: Martin Grigorov
> Labels: core, ear, glassfish, resource
> Fix For: 1.5.4, 6.0.0
>
> Attachments: Wicket153-bug.zip, patch.txt, wicket-core-4293-2.patch
>
>
> The UrlResourceStream, used by PackageResources, uses
> URLConnection#getInputStream() to get file contents. This method is called in
> UrlResourceStream#getInputStream(), but also when closing the resource in
> UrlResourceStream#close(). At least on GlassFish v2 and v3, the second call
> to URLConnection#getInputStream() returns a new stream, so the one created to
> retrieve the file contents is never closed properly.
> This results in a warning of the container when the classes are
> garbage-collected, for example on undeploy.
> The problem is not triggered in all situations. It can be reproduced by using
> Wicket in a multi-module project consisting of an EAR, WAR and JAR. The JAR
> must contain a resource (CSS, image, ...) and a Behavior. Inside the
> Behavior, a static ResourceReference must be created for the resource file.
> When using this Behavior from inside the WAR project by loading a page the
> resource is loaded properly. On undeploy however, the described problem will
> show up.
> The problem does not exists in Wicket 1.4.x, because a reference to the
> InputStream is stored. A quickstart and patch for 1.5 is available, will try
> to attach it :)
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