Michael - What you're trying to do...can't be done. ;-)
HTTP doesn't work that way. http://server/mypage.html -> is one server request which returns HTML. <img> tags in the HTML make -separate- sever requests for each image. Instead of .html -> .vm requests just means that the template will be parsed before being sent -AS HTML- to the client. Embedded IMG tags still make a -separate- request to the server. So this isn't a Velocity problem per se, it's how http requests work. ;-) Cheers, Tim > -----Original Message----- > From: Michael Belz [mailto:[EMAIL PROTECTED] > Sent: Wednesday, March 23, 2005 4:29 AM > To: velocity-user@jakarta.apache.org > Subject: Embedding a Servletgenerated Graphic into an Template > > Hi, > > I'm trying to put a graphic into an Velocity Template (vm). > The problem is that the servelt generated graphic should not be > physically saved to an temporary folder on the server. It's an > encoded jpeg stored in a bytearray. When I use the servlet path > at an 'img src'-tag the graphic is shown. But I don't have this > option here. I already tried to add the bytearray to the context > by using the method put() but then I only get the hash of the > bytearray (because of the toString() method I guess). > > Here's my code: > -------------------------------------------------- > public void perform(Context context, HttpServletRequest request, > HttpServletResponse response, Properties initProps, > Properties sessionProps) throws IOException { > > super.perform(context, request, response); > HttpSession session =request.getSession(); > > > double[] data = new double[7]; > for (int i = 0; i < data.length; i++){ > data[i] = Math.random() * 150000; > } > > BarChart chart = new BarChart(600,1999,data); > > > response.setContentType("image/jpeg"); > String strFileName = "test.jpg"; > OutputStream imageout = response.getOutputStream(); > imageout.write(chart.getJpegByteArray()); > //context.put("trigger",chart.getJpegByteArray()); // > doesn't Work > > } > ---------------------------------------------- > > When I put the Image directly onto the response outputstream, the > picture is shown. > But ONLY the picture. I need to add some additional HTML Code > around it. > Like I said > context.put() doesn't work. > > Can anybody help me out? > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
