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From "Horst Beham (JIRA)" <>
Subject [jira] Commented: (VFS-228) Ant regression with ClassNotFoundException for DefaultLocalFileProvider
Date Mon, 17 Aug 2009 15:19:14 GMT


Horst Beham commented on VFS-228:

If you only need the VFS ant tasks you can copy the commons-vfs.jar (and optionally commons-vfs-sandbox.jar)
into $ANT_HOME/lib.

This doesn't work if you use the same ant JVM to also run unit tests for code using VFS. Then
your code can't find classes from commons-vfs-sandbox.jar

> Ant regression with ClassNotFoundException for DefaultLocalFileProvider
> -----------------------------------------------------------------------
>                 Key: VFS-228
>                 URL:
>             Project: Commons VFS
>          Issue Type: Bug
>    Affects Versions: 2.0
>         Environment: java version "1.6.0_0"
> IcedTea6 1.3.1 (6b12-0ubuntu6) Runtime Environment (build 1.6.0_0-b12)
> OpenJDK Client VM (build 1.6.0_0-b12, mixed mode, sharing)
> Apache Ant version 1.7.1 compiled on October 3 2008
>            Reporter: Per Hermansson
>            Priority: Critical
>             Fix For: 2.0
>         Attachments: patch, test.xml
> The latest version from trunk fails to work with Apache Ant resulting in this error:
> Could not load VFS configuration from "jar:file:/media/Fort/per/program/backup/lib/commons-vfs-2.0-SNAPSHOT.jar!/org/apache/commons/vfs/impl/providers.xml".
> which was caused by 
> java.lang.ClassNotFoundException: org.apache.commons.vfs.provider.local.DefaultLocalFileProvider

> The cause seems to be a class loader issued introduced in rev 537717.
> Reverting that change:
> cd core
> svn diff -c r537717 src/main/java/org/apache/commons/vfs/impl/
| patch -R
> mvn clean install
> [copy commons-vfs-2.0-SNAPSHOT to my test's lib dir]
> ant -f test.xml test
> Makes my example ant file work again (worked with the 1.0 release).
> The 537717 revision was intended to fix 
> VFS-136: Don't force-set the classloader - Thanks to Adam Heath for the patch
> So it might be a bit controversial to reverse that change.
> Attaching patch fixing the issue and my example ant file.

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