RE: How do I display TIF images, but not allow direct download?

["Tim Kosacek" <tkosacek@xxxxxxxxxxxxxx>]

If you make the servlet a JSP, you could solve the caching issue very
easily by wrapping the image generation with the OSCache tag library.
It will let you specify timeouts or cache on different levels, i.e.
session, context, etc.  I experienced very positive results using it.

-----Original Message-----
From: java400-l-bounces@midrange.com
[mailto:java400-l-bounces@midrange.com] On Behalf Of Joe Pluta
Sent: Wednesday, January 29, 2003 2:36 PM
To: Java Programming on and around the iSeries / AS400
Subject: RE: How do I display TIF images, but not allow direct download?


> From: Mandy.Shaw@Notability.com
>
> We do this by making a servlet deliver the binary data straight to the

> browser, rather than just using an URL that points to the image file. 
> We store the image in a BLOB in DB2, but you could no doubt do the 
> same by reading the binary data out of an image file if necessary.

The only caveat being that you no longer take advantage of caching.
That is, every time the user wants to see the image, it must be
downloaded again. The good news, from a security standpoint, is that the
TIF isn't stored in the browser's temporary cache (from which it can be
copied and distributed).

Joe

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