Convert com.lowagie.text.Image to BufferedImage

问题

How can I convert com.lowagie.text.Image to BufferedImage successfully. Please help me.

            com.lowagie.text.Image itemImg=getHeaderImage(true);    

            ByteArrayOutputStream bas = new ByteArrayOutputStream();        
            ImageIO.write((RenderedImage) itemImg,"png", bas);
            byte[] data = bas.toByteArray();            

            InputStream in = new ByteArrayInputStream(data);            
            BufferedImage image = ImageIO.read(in); 

Now I get the exception "java.lang.ClassCastException: com.lowagie.text.ImgRaw cannot be cast to java.awt.image.RenderedImage"

Can anyone help me....

回答1:

iText doesn't do that, no. iText's image class is for bringing images INTO pdf files, not out of them.

Having said that, you can get the bytes, bits per component, and so forth out of an ImgRaw and use that information to build an AWT image.

来源：https://stackoverflow.com/questions/5576588/convert-com-lowagie-text-image-to-bufferedimage