tmpDir.deleteOnExit();
File warFile = artifact.getFile();
UnArchiver unArchiver = archiverManager.getUnArchiver( "jar" );
unArchiver.setSourceFile( warFile );
unArchiver.setDestDirectory( tmpDir );
unArchiver.extract();
File libsDirectory = new File( tmpDir, "WEB-INF/lib" );
if ( libsDirectory.exists() )
{
String[] jars = libsDirectory.list( new FilenameFilter()