You don't need to use AWT libraries or BufferedImage or any of this if you
already *have* an image that you have put into a database. Just read the image
from the database and put it into ServletOutputStream.
dave.
Alex Amies wrote:
> Craig or anyone else who knows,
>
> I am creating gif images, storing them to a database, and then
> serving them up via servlets. The difficulty is, however, in order
> to create the images using a BufferedImage object (which is then
> fed to a gif codec) I need a graphics environment (BufferedImage
> is in the awt package). This is not available to a web server or
> other daemon process, so I get an exception when I try to create the
> BufferedImage. So I am stuck with running my gif generation program
> from a X-window while logged on the server machine - not an really
> ideal situation.
>
> Anyone know a a better way to do this? I am dependent on the Graphics2D
> methods at present for drawing my charts even though it is never necessary
> to visibly display anything within the run-time environment.
>
> Alex Amies
>
> ----- Original Message -----
> From: Craig R. McClanahan <[EMAIL PROTECTED]>
> To: <[EMAIL PROTECTED]>
> Sent: Friday, December 31, 1999 9:37 AM
> Subject: Re: Image in page, or background motif
>
> > Jean Bresse wrote:
> >
> > > I was wondering about one thing about web page generation by a servlet.
> > > Say that you have a web page which contains a picture, or a background
> > > motif. Do you need a second servlet to service the picture itself?
> > >
> > > There are 2 reasons why I ask this:
> > >
> > > 1) With the code I wrote, I'm not able to do it using one servlet only
> > > 2) I know that the context of the servlet is set to "text / html". I'm
> > > only guessing here that the image is of a different context
> > >
> > > Your kind and informative feedbacks on this are MOST appreciated...
> > >
> > > Thanks,
> > >
> > > Jean
> > >
> >
> > When you use something like <img src="myimage.gif"> in your generated
> page,
> > the image is requested by the brower in a separate HTTP request from the
> one
> > that requested this page. If your image is static, you could just set the
> URL
> > of the image to point at a web server to get it, or (if your servlet
> engine
> > serves files as well) just let the servlet engine serve it. On the other
> > hand, if you need to dynamically create the image (say, you were graphing
> some
> > data that was dynamically selected from a database) you might want to have
> a
> > servlet create it. The key is whatever the image URL points at.
> >
> > Craig
> >
> >
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--
David Mossakowski [EMAIL PROTECTED]
Programmer 212.310.7275
Instinet Corporation
"I don't sit idly by, I'm planning a big surprise"
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