AJAX file upload progress for Java using commons fileupload and prototype

Description:

This has been done before with PHP but I needed something a little different because I wanted to upload a file and then have it loaded into a database.

I looked around and found that someone had already made something that used the commons file upload package to do the upload part. It wasn’t exactly what I was looking for but it a good start.

To understand the way this works I think it is easiest to break it down into parts:

1. A file upload extention that counts bytes as they are uploaded
2. An interface that monitors the progress of something running on the server
3. AJAX to pull the monitoring into the current screen

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