java - int 数组到 BufferedImage

Question

我正在使用 Robot 类制作打印屏幕，并将 BufferedImage 转换为 int 数组。然后我想将 int 数组转换回 bufferedimage 但这会出错。这是我的代码:

Dimension screen = Toolkit.getDefaultToolkit().getScreenSize();
BufferedImage printscreen = robot.createScreenCapture(new Rectangle(screen));
int[] pixels = ((DataBufferInt) printscreen.getRaster().getDataBuffer()).getData();

BufferedImage image = new BufferedImage(screen.width, screen.height, BufferedImage.TYPE_INT_RGB);
WritableRaster raster = (WritableRaster) image.getRaster();
raster.setPixels(0, 0, screen.width, screen.height, pixels);

但我收到错误:ArrayIndexOutOfBoundsException: 2073600 但为什么呢？

我在这一行遇到异常:

raster.setPixels(0, 0, screen.width, screen.height, pixels);

编辑:如果我将第二个缓冲图像类型更改为 TYPE_BYTE_GRAY，它会起作用。

Answer 1

int[] bitMasks = new int[]{0xFF0000, 0xFF00, 0xFF, 0xFF000000};
SinglePixelPackedSampleModel sm = new SinglePixelPackedSampleModel(
        DataBuffer.TYPE_INT, width, height, bitMasks);
DataBufferInt db = new DataBufferInt(pixels, pixels.length);
WritableRaster wr = Raster.createWritableRaster(sm, db, new Point());
BufferedImage image = new BufferedImage(ColorModel.getRGBdefault(), wr, false, null);