I could not manage to prevent caching of dynamically generated images playnig with
response headers.
A simple hack is to add some dummy request parameter to the image URL, assuming it
won't break your servlet :
<img src=
"/YourServletImageGenerator?DUMMY=<%=JspBean.getCacheControlValue()%>" >
The image URL gets cached and is used from cache among responses
as long as cache control value stays the same.
You can provide implicit timeout changing that value after time required.
~boris
Tim Endres wrote:
> This is a very general HTTP/browser question that you might get a quicker answer
> to from a more target newsgroup, such as comp.infosystems.www.browsers, or one
> related to HTTP. However, if someone on this list has the answer, I know I sure
> would like to hear it. I wonder if have a servlet field the requests for images,
> so that it can set the proper header lines, would be enough? I don't know if
> browsers honor those headers when they are downloading images.
>
> tim.
>
> > Hi,
> >
> > We have a J2EE application developed with JSP,EJB and SQL server 2000 with
> > Orion Server.We want to cache all our jsp page for a particular time on a
> > caching server.With HTTP Headers this is perfectly working but the images
> > on the page it never Time out. I would like to know if there is a way to set
> > cache time out for images in Orion or JSP
> >
> > Can any body help.
> >
> > Regards
> >
> > Rajeev
> >
