code: public static String read(URL url) throws IOException, NotFoundException {
          BufferedImage image = ImageIO.read(url);
          return read(image);
      }
docs: 从图片中读取二维码
  
  @param url 图片的URL
  @return 二维码包含的文本信息
  @throws IOException       IO异常
  @throws NotFoundException 当图像文件中没有二维码信息（图像）时抛出该异常