Hallo,

I am using gfv3.1.2.2, richfaces 3.3.3 final and jsf 1.2. I am trying to generate captcha image using mediaoutput component but i am not succeeded with that. it is not showing image at all and paint method is not being called. It is not throwing any error in server log.

jsp code:

    <a4j:mediaOutput id="captcha" element="img" cacheable="false" session="false" createContent="#{mediaBean.paint}" mimeType="image/jpeg"

                                         value="#{mediaBean.mediaData}" />

bean code is:

     public void paint(OutputStream out, Object data) throws IOException {

        MediaData paintData = (MediaData) data;

        BufferedImage img = new BufferedImage(paintData.getImageWidth(), paintData.getImageHeight(), BufferedImage.TYPE_INT_RGB);

        Graphics2D g2d = img.createGraphics();

        /* Font style for image */

        Font font = new Font(Font.SANS_SERIF, Font.TRUETYPE_FONT, 32);

        Random randChars = new Random();

        String imageChar = "";

        /* Possible random characters in the image */

            imageChar = (Long.toString(Math.abs(randChars.nextLong()), 36)).substring(0,

                    paintData.getTotalCharacters());

        int iCircle = 7;

        //Prepare a rectangular shape

        g2d.fillRect(0, 0, paintData.getImageWidth(),

                paintData.getImageHeight());

        //Logic to prepare circles inside rectangular image

        for (int i = 0; i < iCircle; i++) {

            g2d.setColor(new Color(randChars.nextInt(255),

                    randChars.nextInt(255),

                    randChars.nextInt(255)));

            int imageRadius = (int) (Math.random() * paintData.getImageHeight()

                    / 2.0);

            int iX = (int) (Math.random() * paintData.getImageWidth()

                    - imageRadius);

            int iY = (int) (Math.random() * paintData.getImageHeight()

                    - imageRadius);

            g2d.fillRoundRect(iX, iY, imageRadius * 2, imageRadius * 2, 100, 100);

        }

        //Set the font to image

        g2d.setFont(font);

        //Disperse the characters inside the image

        for (int i = 0; i < paintData.getTotalCharacters(); i++) {

            g2d.setColor(new Color(randChars.nextInt(255),

                    randChars.nextInt(255),

                    randChars.nextInt(255)));

            if (i % 2 == 0) {

                g2d.drawString(imageChar.substring(i, i + 1), 25 * i, 24);

            } else {

                g2d.drawString(imageChar.substring(i, i + 1), 25 * i, 35);

            }

        }

        //set the random character string to validate later.

        setDisplayCode(imageChar);

        ImageIO.write(img, "png", out);

    }

Serialized bean class is

    public class MediaData implements Serializable {

    private static final long serialVersionUID = 1L;

    Integer Width=110;

    Integer Height=50;

    //Corresponding setters and getters

    }

did i do anything wrong here? please help me out!