Ken Cochrane have posted a simple tutorial on creating the Ajax upload progress bar using struts and DWR.
He writes "Over the course of the last year or so I have been hearing a lot about AJAX, and how cool it is, and what neat stuff you can do with it. At first I wasn't too impressed, mostly because I have heard it all before. It wasn't until I saw google maps that I realized how cool it was. I have been itching to use Ajax ever since."
He further explains:
What I wanted to change in the example.
Get the example to work with struts
get the file to upload to a selected directory
show the status of the file in the progress meter
when the file is uploaded don't leave the page, stay on the same page (no redirect or refresh).
What I did.
I downloaded the war file with source code from the article
refactored the project directory
changed the build script
setup struts, log4j
added logging statements for easier debugging
Download the code for AJAX Struts File Upload Progress.
 Read Full Tutorial
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