Resize og vis billede fra BLOB i database

Jeg har nu faaet lavet servletten, som bare viser billedet.

Er der nogen, der kan hjaelpe med resize delen?

Her er den fungerende servlet:

public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

        String refindkey = request.getParameter("id");

        Blob b = DatabaseFunc.getBlob(refindkey);
        try {
            InputStream in = b.getBinaryStream();
            response.setContentType("image/jpeg");
            BufferedOutputStream out = new BufferedOutputStream(response.getOutputStream());
            byte[] by = new byte[32768];
            int index = in.read( by, 0, 32768 );
            while (index != -1)
            {
                out.write(by, 0, index);
                index = in.read(by, 0, 32768);
            }
            out.flush();
        } catch (SQLException e) {
            e.printStackTrace();  //To change body of catch statement use File | Settings | File Templates.
        }
    }

Der er masser af eksempler på nettet:

http://forum.java.sun.com/thread.jspa?threadID=260711&messageID=985157
http://www.velocityreviews.com/forums/t148931-how-to-resize-a-jpg-image-file.html

byte[] by = new byte[32768];
            int index = in.read( by, 0, 32768 );
            while (index != -1)
            {
                out.write(by, 0, index);
                index = in.read(by, 0, 32768);
            }

ville jeg lave som:

            byte[] by = new byte[32768];
            int n;
            while ((n = in.read( by, 0, by.length )) >= 0) {
                out.write(by, 0, n);
            }

Jeg har kigget masser af eksempler igennem nu, men der er ikke nogen, der viser det jeg oensker. Hent blob -> lav mindre version -> vis mindre version.

Jeg har proevet i timevis at experimentere med diverse kode stumper fra her og der, men jeg kan ikke faa det til at virke.

Her er mit seneste eksperiment:

public class ShowImageServlet extends HttpServlet {

    public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

        String refindkey = request.getParameter("id");

        Blob b = DatabaseFunc.getBlob(refindkey);
        if (b != null) {
            try {
                InputStream in = b.getBinaryStream();

                long len = b.length();
                byte[] data = b.getBytes(1, (int) len);

                Image sourceimage = new ImageIcon(data).getImage();
                int sourcewidth = sourceimage.getWidth(null);
                int sourceheight = sourceimage.getHeight(null);

                int targetwidth = 125;
                int targetheight = sourceheight * (targetwidth / sourcewidth);

                BufferedImage resizedimage = this.scaleImage(sourceimage,targetwidth,targetheight);
                ByteArrayOutputStream out = new ByteArrayOutputStream();
                JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);
                encoder.encode(resizedimage);
                byte[] by = out.toByteArray();

                response.setContentType("image/jpeg");
                BufferedOutputStream out2 = new BufferedOutputStream(response.getOutputStream());
                int n = 0;
                while (n < by.length) {
                    out2.write(by[n]);
                }
                out.flush();
            } catch (SQLException e) {
                e.printStackTrace();  //To change body of catch statement use File | Settings | File Templates.
            }
        }
    }

    private BufferedImage scaleImage(Image sourceImage, int width, int height) {
        ImageFilter filter = new ReplicateScaleFilter(width, height);
        ImageProducer producer = new FilteredImageSource
                (sourceImage.getSource(), filter);
        Image resizedImage = Toolkit.getDefaultToolkit().createImage(producer);

        return this.toBufferedImage(resizedImage);
    }

    private BufferedImage toBufferedImage(Image image) {
        image = new ImageIcon(image).getImage();
        BufferedImage bufferedImage = new BufferedImage(image.getWidth(null)
                , image.getHeight(null), BufferedImage.TYPE_INT_RGB);
        Graphics g = bufferedImage.createGraphics();
        g.setColor(Color.white);
        g.fillRect(0, 0, image.getWidth(null), image.getHeight(null));
        g.drawImage(image, 0, 0, null);
        g.dispose();

        return bufferedImage;
    }


HJAELP!

Nu har jeg ogsaa proevet at bruge denne metode, som er skrevet her

http://www.webmaster-talk.com/coding-forum/63227-image-resizing-in-java.html

Og dermed bare manipuleret min inputstream saaledes:

InputStream in = ImageHandler.scaleImage(b.getBinaryStream());

Men nu kommer der ikke noget billede frem :(

Nu fik jeg soerme den der sidstnaevnte til at virke... :)