How to preserve some files inside application directory after a Redeploy?

Hi, all.
My application (recently refactored to run from JServ to OC4J) have an Upload procedure that puts a file inside the context from wich the Upload.jsp is being called. I.e, www.xyz.com/app_name/upload.jsp when called puts a file inside $ORACLE_HOME\j2ee\OC4J_xxx\applications\blaff\uploaded_files (blaff is the directory that contains the Upload.jsp file).
Now, we have about 30MB inside uploaded_files directory and a problem: when redeploying the application, the "blaff" directory is removed and all uploaded files are lost.
There is a way to "preserve" these files? The other issue is related to big quantity of application images, pdf's and Xls's: about 40MB!!! My final EAR file is about 60MB, and it's difficult to transmit it from developer's machine to the server's machine through a VPN.
Can somebody help me with this issue?
Thanks!

You can use getClass().getResource(classpath)
to get a stream version of the data from your
jar file. If you need to put it in a file, you
can write that stream to a file in a temp directory.
classpath is the classpath of your js file

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