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https://issues.apache.org/jira/browse/VFS-426?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13404228#comment-13404228
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Daniel Bergholm commented on VFS-426:
-------------------------------------
My workaround is to use a FileSystemManager with a NullFilesCache (Spring bean
declaration):
{code:xml}<bean id="fileSystemManager"
class="org.apache.commons.vfs2.impl.StandardFileSystemManager"
init-method="init" destroy-method="close">
<property name="filesCache">
<bean class="org.apache.commons.vfs2.cache.NullFilesCache"/>
</property>
</bean>{code}
Of course this workaround might not be good enough in cases where the
performance hit of not using a cache is a problem.
I think a fix for this bug would be to use
{{org.apache.commons.vfs2.provider.AbstractFileName#createURI}} (which is then
overriden in this case by
{{org.apache.commons.vfs2.provider.URLFileName#createURI()}}) when creating the
key in {{org.apache.commons.vfs2.provider.AbstractFileName#getKey()}}, since
the key is then used in
{{org.apache.commons.vfs2.provider.AbstractFileName#equals(Object o)}} and
{{org.apache.commons.vfs2.provider.AbstractFileName#hashCode()}}, which are
then used in cache implementations (such as HashMaps)
> HTTP URL query string not part of cache key
> -------------------------------------------
>
> Key: VFS-426
> URL: https://issues.apache.org/jira/browse/VFS-426
> Project: Commons VFS
> Issue Type: Bug
> Affects Versions: 2.0
> Reporter: Daniel Bergholm
>
> I am using commons-vfs amongst other things to download http files. When
> resolving different URLs where only the query string differs, the default
> cache returns the wrong URL sometimes (returning a previously accessed URL
> where only the query string differs).
> I think this is because the key property of URLFileName does not include the
> query string. The {code:java}createURI(){code} method of URLFileName does
> include it, but when constructing the key the {code:java}createURI(boolean
> useAbsolutePath, boolean usePassword){code} method of AbstractFileName is
> used. This method only includes the path.
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