In Java, image and byte[] convert each other

In Java, image and byte[] convert to each other hateful ... It's pretty good, actually. Just write down the things that are hard to come up with, afraid to forget ... Next, let me introduce a simple byte[] to image, We only need a binary string (byte[]) that stores the image information. Then, this: InputStream Buffin = new Bytearrayinputstream (/* Binary string */, /* Start position */, /* Binary string length */)); BufferedImage img = imageio.read (Buffin); In this way, we have a can output bufferedimage, is not very simple ~ Next, we'll write a piece of code, and it's simple. First, we have to prepare an image object that can be output. Then, this Bytearrayoutputstream BOS = new Bytearrayoutputstream (); Imageio.write ((renderedimage)//The format of the picture */,/* picture to output */,bos);(to use try and Chatch Then use Bos.tobytearray ();(Bytearrayoutputstream.tobytearray) to get the desired byte[] ~ Isn't it very simple? I just wanted to upload it. Picture, create a new picture of the specified size and then store it together in the database. It was not easy to use the Toolkit class to generate a picture of what, is said to be Java.awt.image.TookitImage object Excerpted from Http://blog.csdn.net/comcow/archive/2008/10/08/3031252.aspx Add one more word. Image Img=toolkit.getdefaulttoolkit (). CreateImage (buf, 0,buf.length); InputStream conversion byte[] Public byte[] Tobarray (InputStream is) { Bytearrayoutputstream OUTP = new Bytearrayoutputstream (); int ch = 0; while ((Ch=is.read ())!=-1) Outp.write (CH); Byte[] B = Outp.tobytearray (); return b; }

In Java, image and byte[] convert each other