Java处理某些图片红色问题

问题现象：

Java上传图片时，对某些图片进行缩放、裁剪或者生成缩略图时会蒙上一层红色，经过检查只要经过ImageIO.read()方法读取后再保存，该图片便已经变成红图。因此，可以推测直接原因在于ImageIO.read()方法加载图片的过程存在问题。

public static BufferedImage getImages(byte[] data) throws IOException {ByteArrayInputStream input = new ByteArrayInputStream(data);return ImageIO.read(input);}

经过查阅得知ImageIO.read()方法读取图片时可能存在不正确处理图片ICC信息的问题，ICC为JPEG图片格式中的一种头部信息，导致渲染图片前景色时蒙上一层红色。

解决方案：

不再使用ImageIO.read()方法加载图片，而使用JDK中提供的Image src=Toolkit.getDefaultToolkit().getImage

Image src=Toolkit.getDefaultToolkit().getImage(file.getPath());BufferedImage image=BufferedImageBuilder.toBufferedImage(src);//Image to BufferedImage

或者Toolkit.getDefaultToolkit().createImage

Image imageTookit = Toolkit.getDefaultToolkit().createImage(bytes);BufferedImage cutImage = BufferedImageBuilder.toBufferedImage(imageTookit);

BufferedImageBuilder源码：

public static BufferedImage toBufferedImage(Image image) {if (image instanceof BufferedImage) {return (BufferedImage) image;}// This code ensures that all the pixels in the image are loadedimage = new ImageIcon(image).getImage();BufferedImage bimage = null;GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();try {int transparency = Transparency.OPAQUE;GraphicsDevice gs = ge.getDefaultScreenDevice();GraphicsConfiguration gc = gs.getDefaultConfiguration();bimage = gc.createCompatibleImage(image.getWidth(null),image.getHeight(null), transparency);} catch (HeadlessException e) {// The system does not have a screen}if (bimage == null) {// Create a buffered image using the default color modelint type = BufferedImage.TYPE_INT_RGB;bimage = new BufferedImage(image.getWidth(null),image.getHeight(null), type);}// Copy image to buffered imageGraphics g = bimage.createGraphics();// Paint the image onto the buffered imageg.drawImage(image, 0, 0, null);g.dispose();return bimage;}