How can i do it with JSP - dealing with multipart/form-data?

Hi guys,
i have a form in which one of its components is a optional file that can be uploaded to the server. Up here, no matter...
I thought that i could evaluate the file size, so i would avoid upload process which size was bigger than something, like 10kBytes. Of course, i wouldnt like to do something like: post to servlet and then, dispatcher an error page. If the browser could stay with the same page( and form), it would be very good!
Thanks in advance, Euclides.

My doubt is: is there a
way to evaluate the file size before posting it? Is it
Javascript? Hard to do it? How?http://www.experts-exchange.com/Web/Web_Languages/JavaScript/Q_20765620.html
scroll down about 1/2 down the page.
-Rob

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Edited by: user8483670 on Jun 6, 2011 1:09 AM

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