Java将图片转换为byte数组例子总结

/**  
     * 转换Image数据为byte数组  
     * @param image  
     *            Image对象  
     * @param format  
     *            image格式字符串.如"gif","png"  
     * @return byte数组  
     */  
    public static byte[] imageToBytes(Image image, String format) {   
        BufferedImage bImage = new BufferedImage(image.getWidth(null), image   
                .getHeight(null), BufferedImage.TYPE_INT_ARGB);   
        Graphics bg = bImage.getGraphics();   
        bg.drawImage(image, 0, 0, null);   
        bg.dispose();   
  
        ByteArrayOutputStream out = new ByteArrayOutputStream();   
        try {   
            ImageIO.write(bImage, format, out);   
        } catch (IOException e) {   
            e.printStackTrace();   
        }   
        return out.toByteArray();   
    }   
  
    /**  
     * 转换byte数组为Image  
     * @param bytes  
     * @return Image  
     */  
    public static Image bytesToImage(byte[] bytes) {