将BufferedImage或ImageIO转换为ByteBuffer

Question

I read a image through BufferedImage get its RGB value, Now for writing the image back, instead of using the ImageIO, I have to write the Image in HDFS(Hadoop Distributed File System). Now I have only one option to use that is using FSDataOutputStream to write. So Is it possible to convert the RGB values from the buffered image to ByteBuffer class in Java?? Pls.Help

Answer 1

BufferedImage originalImage = ImageIO.read(new File("c:\\image\\mypic.jpg"));
ByteArrayOutputStream baos = new ByteArrayOutputStream();
ImageIO.write( originalImage, "jpg", baos );
baos.flush();
byte[] imageInByte = baos.toByteArray();
baos.close();
ByteBuffer buf = ByteBuffer.wrap(imageInByte);

Source: http://jaypthakkar.blogspot.de/2014/01/convert-bufferedimage-to-bytebuffer.html