Thank you Thomas. Given what I'm trying to do, I need to have the Image created via a GWT RPC call. However, nothing keeps me from implementing doGet () within my servlet, so I did that, and now I can serve up the images cleanly, and I can even cache them! :-)
Greg On Oct 26, 11:26 am, Thomas Broyer <[email protected]> wrote: > On 26 oct, 16:18, Greg Dougherty <[email protected]> wrote: > > > > > > - Generate the image with a servlet on the fly (return the appropriate > > > mime > > > type and the image) or (if the images are small) > > > Great idea. HOW DO I DO THAT? > > > Sorry for the shouting, but I'm already generating the things on the > > fly. If I knew how to return them other than as a file, I'd already > > be doing that. > > > I've got a GWT client and a GWT Servlet. The GWT Servlet has an image > > sitting in its memory. I want to get that image to the client. If > > you can give me sample code, point me to sample code, or point me to a > > well documented Java function, that would be great, and you would have > > my full appreciation. > > > Telling me to "do X' is pointless, if you don't give me some way of > > figuring out how to DO that X. Because if I knew how to do it, I > > would have already done it, and not wasted everyone's time with these > > questions. > > The thing is: instead of calling your servlet through GWT-RPC or > whatever (anything implemented above XMLHttpRequest) to generate the > image; "generate" the call through a new Image(), passing the > "arguments" in the URL. > Your servlet will then be a bare HttpServlet (no GWT involved, just > implement de doGet method) and you'd send the image back using the > HttpServletResponse's OutputStream (after setting the > HttpServletResponse's content-type to the appropriate value, for > instance "image/png"). > To get the arguments on the server-side, if you passed them in the > query string, then HttpServletRequest#getParameter will work > seamlessly. -- You received this message because you are subscribed to the Google Groups "Google Web Toolkit" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
