public static void cutImage(InputStream input, OutputStream out,String type, int x, int y, int width, int height)throws IOException {

ImageInputStream imageStream = null;

try {

String imageType = (null == type || "".equals(type)) ? "jpg" : type;Iterator readers = ImageIO

.getImageReadersByFormatName(imageType);

ImageReader reader = readers.next();

imageStream = ImageIO.createImageInputStream(input);

reader.setInput(imageStream, true);

ImageReadParam param = reader.getDefaultReadParam();

Rectangle rect = new Rectangle(x, y, width, height);

param.setSourceRegion(rect);

BufferedImage bi = reader.read(0, param);

ImageIO.write(bi, imageType, out);

} finally {

imageStream.close();

input.close();

out.close();

}

}

使用示例：

//locUrl為大圖路徑

String[] targetRect=info.getTargetRect().split("/");

//小圖保存本地

ImageUtils.cutImage(new FileInputStream(locUrl),new FileOutputStream(smallLoc),"jpg", Integer.parseInt(targetRect[0]),

Integer.parseInt(targetRect[1]), Integer.parseInt(targetRect[2]), Integer.parseInt(targetRect[3]));