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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