Java将图片读取成rgb

 private ImageInfo loadTestImage(String path) throws Exception{
        File img = new File(path);
        if (!img.exists()) {
            return null;
        }
        BufferedImage image = null;
        try {
            image = ImageIO.read(img);
        } catch (Exception e) {
            if(image == null){
                CMYK.readImage(path);//将CMYK模式转为rgb模式
                img = new File(path);
                image = ImageIO.read(img);
            }
            if(image == null){
                logger.debug("转换图片失败,源图片路径："+path+ "；原因：该图片无法转换成rgb");
                System.out.println("转换图片失败,源图片路径："+path+ "；原因：该图片无法转换成rgb");
                return null;//如果还是无法转化，则跳过
            }
        }
        if (image == null) {
            return null;
        }

        final int width = image.getWidth();
        final int height = image.getHeight();
        int[] pix = new int[width * height];
        PixelGrabber pg = new PixelGrabber(image, 0, 0, width, height, pix, 0, width);
        try {
            if (!pg.grabPixels()) {
                return null;
            }
        } catch (InterruptedException e) {
            logger.debug("转换图片失败,源图片路径："+path+ "；原因：该图片无法转换成rgb.");
            System.out.println("转换图片失败,源图片路径："+path+ "；原因：该图片无法转换成rgb.");
        }

        ImageInfo imageInfo = new ImageInfo();
        imageInfo.setWidth(width);
        imageInfo.setHeight(height);
        byte[] rgb24 = new byte[width * height * 3];
        for (int i = 0; i < height; i++) {
            for (int j = 0; j < width; j++) {
                int idx = width * i + j;
                int color = pix[idx]; //获取像素
                int red = ((color & 0x00FF0000) >> 16);
                int green = ((color & 0x0000FF00) >> 8);
                int blue = color & 0x000000FF;

                int rgbIdx = idx * 3;
                rgb24[rgbIdx] = (byte) red;
                rgb24[rgbIdx + 1] = (byte) green;
                rgb24[rgbIdx + 2] = (byte) blue;
            }
        }
        imageInfo.setImage(rgb24);
        return imageInfo;
    }

    private static class ImageInfo {
        private byte[] image;
        private int width;
        private int height;
        private float score;

        public float getScore() {
            return score;
        }

        public void setScore(float score) {
            this.score = score;
        }

        public byte[] getImage() {
            return image;
        }

        public void setImage(byte[] image) {
            this.image = image;
        }

        public int getWidth() {
            return width;
        }

        public void setWidth(int width) {
            this.width = width;
        }

        public int getHeight() {
            return height;
        }

        public void setHeight(int height) {
            this.height = height;
        }
    }