Primefaces Print Dynamic Images - image

Question

I tried to load an image dynamically, and everything works.
The image I is loaded and displayed correctly in a dynamic,
I added the tag for printing.
Now if I ask to print the image created dynamically I can not print.
<pou:commandButton value="Print" type="button" icon="ui-icon-print">
<pou:printer target="image" />
</pou:commandButton>
<pou:graphicImage id="image" value="#{printDynamicBean.graphicIMG}" />
My bean does like this:
public StreamedContent getGraphicIMG() {
//Graphic
BufferedImage bufferedImg;
try {
bufferedImg = ImageIO.read(baseImage);
} catch (IOException e) {
}
try {
Graphics2D g2 = bufferedImg.createGraphics();
g2.setColor(Color.black);
int style = Font.BOLD | Font.ITALIC;
Font f1 = new Font("TimesNewRoman", style , 60);
g2.setFont(f1);
g2.drawString("Hello Print", 80, 580);
ByteArrayOutputStream os = new ByteArrayOutputStream();
ImageIO.write(bufferedImg, "png", os);
graphicIMG = new DefaultStreamedContent(new ByteArrayInputStream(os.toByteArray()), "image/png");
} catch (IOException ex) {
Logger.getLogger(PrintCartelliniBean.class.getName()).log(Level.SEVERE, null, ex);
}
return graphicIMG;
}
it is as if she had forgotten the image created.
Thanks.

Answer 1

using CDI bean you can do this :
#Model
public class ImageBean {
private StreamedContent image;
#Produces
#Named
public StreamedContent getImage() {
if (FacesContext.getCurrentInstance().getRenderResponse()) {
// rendering the view, return a stub StreamedContent to generate right URL.
image = new DefaultStreamedContent();
} else {
// requesting the image
image = your dynamic image;
}
return image;
}
}
in your view : <pou:graphicImage id="image" value="#{image}" />