Write an image file to a jsp page

Question

Hy,
I've writen a small program, which draws a chart. The program normally creates a .png file of this chart which it stores on the file system and then read the png file and display the chart on a jsp page. Now, what I want is that, instead of writing the png file on the filesystem, i write it on a jsp page and then read the file from that jsp page. (i.e Its the jsp page which contains the image file).
Can anyone please explain to me how to achieve this and if possible the codes also
thanks in advance

Answer 1

Hi, gulshan21
JSP pages are intended to send text type content (though in the most of the containers this approach seems works fine). The best thing is to make a servlet, like this:
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.awt.*;
import javax.imageio.*;
import java.awt.image.*;
public class GraphicServlet extends HttpServlet {
  public void doGet(HttpServletRequest request,
                                   HttpServletResponse response)
                           throws ServletException, IOException {
    response.setContentType("image/jpeg");     // Or "image/png"
    OutputStream os = response.getOutputStream();
    ImageIO.write(getImage(100, 100), "PNG", os);      // Sends the image
    os.close();
  private synchronized BufferedImage getImage(int width, int height) {
    BufferedImage img = new BufferedImage(width, height,
                                                                                BufferedImage.TYPE_INT_RGB);
    Graphics g = img.createGraphics();
    // Here you draw the image with the graphics methods
    g.dispose();
    return img;
}Salud
David