It might be an issue to throw back at Struts or another dependent library that uses resources from the classpath-- I had the same problem with my project and ended up having to re-work closing URLConnections on the classpath.
One of the culprits was code to check the lastModified date of resources on the classpath, it will end up locking the resource, so you have to grab an inputstream and immediately close it to guarantee you've freed the lock.
>I have an EAR that contains the Struts JARs. When I modify the app and
>try to redeploy, it always fails because of file locks on the Struts
>JARs. To redeploy, I have to shut down GlassFish, manually delete the
>app from the domain, restart, and redeploy.
>
>Has anyone else run into a similar problem with Struts or anything
>else? What is the solution? Its painful to try to develop for
>GlassFish if you have to keep shutting down the server in order to redeploy.
>
>Thanks,
>
>Mark
>
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