Hi ponkoj,
Here I am giving u a lil program which generates JPEG image on the fly.
However, you need to write your own routines for reading data from
database(whatever you want), generate images from the data read from the
databse. This lil program draws a rectangle and an oval and converts them
into JPEG image, and encodes JPEG image.
Hope it helps u.
import com.sun.image.codec.jpeg.*;
public class JPEGServlet extends HttpServlet {
//Process the HTTP Get request
public void doGet(HttpServletRequest
request, HttpServletResponse response)
throws ServletException, IOException
{
response.setContentType("image/jpeg");
ServletOutputStream out =
response.getOutputStream();
BufferedImage image = new
BufferedImage(100,100, BufferedImage.TYPE_INT_RGB);
Graphics g = image.getGraphics();
g.setColor(Color.green);
g.fillRect(0, 0, 100, 100);
g.setColor(Color.red);
g.drawOval(0, 0, 100,100);
JPEGImageEncoder encoder
=JPEGCodec.createJPEGEncoder(out);
encoder.encode(image);
out.close();
}
//Process the HTTP Post request
public void doPost(HttpServletRequest
request, HttpServletResponse response)
throws ServletException, IOException {
doGet(request,response);
}
}
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* *
* A.S.M. Rokanuzzaman *
* Computer Science *
* UND *
* Phone:701-777-9352 *
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