If you do not have any complex html you can render it using a normal JLabel. The code below will produce this image:
<html>
<h1>:)</h1>
Hello World!<br>
<img src="http://img0.gmodules.com/ig/images/igoogle_logo_sm.png">
</html>
public static void main(String... args) throws IOException {
String html = "<html>" +
"<h1>:)</h1>" +
"Hello World!<br>" +
"<img src="http://img0.gmodules.com/ig/images/igoogle_logo_sm.png">" +
"</html>";
JLabel label = new JLabel(html);
label.setSize(200, 120);
BufferedImage image = new BufferedImage(
label.getWidth(), label.getHeight(),
BufferedImage.TYPE_INT_ARGB);
{
// paint the html to an image
Graphics g = image.getGraphics();
g.setColor(Color.BLACK);
label.paint(g);
g.dispose();
}
// get the byte array of the image (as jpeg)
ByteArrayOutputStream baos = new ByteArrayOutputStream();
ImageIO.write(image, "jpg", baos);
byte[] bytes = baos.toByteArray();
....
}
If you would like to just write it to a file:
ImageIO.write(image, "png", new File("test.png"));
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