Interesting ... and ugly. I'm storing this in the back of my mind, along with the question: should Ajax URLs be different than standard URLs?
On Fri, Nov 12, 2010 at 5:56 AM, <[email protected]> wrote: > Hi guys, > > When using tapestry-upload I stumbled across an unusual browser bug that I > spent hours on, so wanted to share... maybe it helps someone else: > > Unlike weaker implementations, UploadedFile.getContentType(); returns the > mime type of the uploaded file by extracting it from the http header > 'Content-Type' after the file posts. To my knowledge this is the best > approach... examining the file extension has obvious drawbacks. > Unfortunately I found Firefox 3.6.12 sets the header incorrectly on Windows, > but correctly on Linux... I am willing to bet some more inconsistent browser > implementations exist as well, so be warned that while Tapestry does its > part, your code may not work as expected or may contain subtle bugs because > browsers can't be trusted to set this header correctly. > > I am not sure if some of the tapestry gurus can come up with a better > solution, but I work around this problem by combining checks, falling back > on a file extension check when I detect a problem... If anyone has a better > suggestion I would love to hear it. > > Cheers, > Peter > > > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [email protected] > For additional commands, e-mail: [email protected] > > -- Howard M. Lewis Ship Creator of Apache Tapestry The source for Tapestry training, mentoring and support. Contact me to learn how I can get you up and productive in Tapestry fast! (971) 678-5210 http://howardlewisship.com
