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| public class ImageUtil {
public void test() {
try {
FileInputStream in = new FileInputStream("D:\\Pictures\\temp\\1.jpg");
byte[] bytes = new byte[in.available()];
int read = in.read(bytes);
in.close();
bytes = getFaceHead(getFaceHead);
OutputStream outputStream = new FileOutputStream("D:\\Pictures\\temp\\" + System.currentTimeMillis() + ".jpg");
outputStream.write(bytes);
outputStream.close();
} catch (Exception e) {
throw new RuntimeException("翻转图片失败");
}
}
private byte[] getFaceHead(byte[] pictureBytes) {
try {
BufferedImage pictureImage = ImageIO.read(new ByteArrayInputStream(pictureBytes));
final int width = pictureImage.getWidth();
final int height = pictureImage.getHeight();
int[] rgbs = pictureImage.getRGB(0, 0, width, height, null, 0, width);
int temp;
for (int row = 0; row < height; row++) {
for (int col = 0; col < width / 2; col++) {
temp = rgbs[row * width + col];
rgbs[row * width + col] = rgbs[row * width + (width - 1 - col)];
rgbs[row * width + (width - 1 - col)] = temp;
}
}
pictureImage.setRGB(0, 0, width, height, rgbs, 0, width);
ByteArrayOutputStream out = new ByteArrayOutputStream();
ImageIO.write(pictureImage, "jpg", out);
return out.toByteArray();
} catch (IOException e) {
throw new RuntimeException("翻转图片失败");
}
}
}
|