restrict file upload size

Hello all,

In JSP / HTML, I want to restrict the size of file being uploaded.

<input type="file" name="myfile"/>

If the user trying to upload a file size bigger than some value say 5MB, i want to give mesage to the user. I don't want to wait till the file gets uploaded to server and then validate the file size. I am looking for client side validation. Can it be done using scripting language or any other way?

Need a solution for this in Internet Explorer. I got a solution using ActiveX control:
var myFSO = new ActiveXObject("Scripting.FileSystemObject");
var filepath = document.getElementById('myfile').value;
var thefile = myFSO.getFile(filepath);
var sizeInBytes = thefile.size;

But ActiveX controls are not allowed in our application. Is there any alternative way for this?

Please suggest the possible ways.. Thanks!!


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Poli reddy

 

Only flash has these capabatilies. Check http://pixeline.be/experiments/jqUploader/test.php where you can specify maximum size of uploaded file.

 

is applet a solution for this??

 

Thanks Novak. But I cant use Flash becuase it forces IE client to install Flash Player 10+ which is not possible for our application. Could u suggest any other way? Is it possible using Applets?

 

Yes, it is probably possible via Java applet. Maybe this could work:
http://jupload.sourceforge.net/howto-customization.html

maxFileSize - This parameter identify the maximum size that an uploaded file may have. It prevent the user to upload too big files.

 

Thanks a lot Novak.. It worked.. Now I am able to upload bigsize file and get it validated within seconds.. Thanks again!!

 

thanks to the forum too!!