Kenny,
Use two servlets or a JSP and a servlet. One jsp/Servlet outputs the HTML
page with an img tag that has the src attribute that specifies a URL to a
second servlet that produces the JPEG image.
-Richard
At 02:27 PM 9/30/2002 -0500, you wrote:
>I'm trying to write a servlet that draws a chart and put's some HTML info
>about the chart on a page. For a test, I got a servlet to draw a blue
>rectangle (proving my graphics and JPEG encoding worked) in my browser. The
>problem I'm having is that I can't seem to add HTML to the page; it only
>draws the rectangle when I send the graphics as a single JPEG image.
>
>Does anyone know how to mix an embedded JPEG image and regular HTML? I've
>attached my little test servlet below for reference. Thanks,
>Kenny
>
>import java.io.*;
>import javax.servlet.*;
>import javax.servlet.http.*;
>import java.awt.*;
>import java.awt.image.*;
>import com.sun.image.codec.jpeg.*;
>
>public class GraphicsTest extends HttpServlet
>{
> private static final int WIDTH = 650;
> private static final int HEIGHT = 650;
>
> public void doGet(HttpServletRequest request,
> HttpServletResponse response) throws ServletException, IOException
> {
> // open the output and set the type to JPEG
> ServletOutputStream out = response.getOutputStream();
> response.setContentType("image/jpeg");
>
> // create a blank image
> BufferedImage image = new BufferedImage(WIDTH, HEIGHT,
> BufferedImage.TYPE_INT_RGB);
> Graphics2D g2 = image.createGraphics();
> g2.setColor(Color.blue);
> g2.fillRect(0,0,WIDTH,HEIGHT);
>
> // encode the output to JPEG
> JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);
> encoder.encode(image);
>
> // send the output out
> out.flush();
> out.close();
> }
>}
>
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