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ClassLoader and directories

John Towell

Joined: Jul 26, 2002
Posts: 20
Does anyone know how to load all of the files inside a directory that is inside a war or jar? I have been using the ClassLoader to load config files which works great if you know the name of the file.
URL url = this.getClass().getClassLoader().getResource("config/manufacturerDataImport/import1.xml");
However I would like to be able to load all of the files inside the directory, and have the names be able to change. So If I had a URL that is
URL url = this.getClass().getClassLoader().getResource("config/manufacturerDataImport/");
I want to get a Collection of all of the xml files inside that URL directory.
Simon Brown
sharp shooter, and author
Ranch Hand

Joined: May 10, 2000
Posts: 1913
Yes and for WAR files there are two ways. First of all you can use the getRealPath() method on the ServletContext object althought this isn't recommended as it doesn't work too well!
The best way (that I've found) is to use the ServletContext.getResources() method. I use this in my TagUnit testing framework to find a list of all test*.jsp files underneath a certain directory. Here's a snippet from TagUnit to help you on your way...

Hope that's useful! I've tested this code in WebLogic 7, Websphere 5, Tomcat 4, Resin 2, Jetty (recent version) and it works a treat. However, it doesn't work with OC4J/Oracle 9i at the moment.
For JAR files, you have to use the classes in java.util.jar - I also do this in TagUnit so I'll try to dig out some code for you...
[ March 21, 2003: Message edited by: Simon Brown ]
I agree. Here's the link:
subject: ClassLoader and directories
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