code: public static BufferedImage toBufferedImage(Image image, String imageType) {
  		BufferedImage bufferedImage;
  		if (false == imageType.equalsIgnoreCase(IMAGE_TYPE_PNG)) {
  			// 当目标为非PNG类图片时，源图片统一转换为RGB格式
  			if (image instanceof BufferedImage) {
  				bufferedImage = (BufferedImage) image;
  				if (BufferedImage.TYPE_INT_RGB != bufferedImage.getType()) {
  					bufferedImage = copyImage(image, BufferedImage.TYPE_INT_RGB);
  				}
  			} else {
  				bufferedImage = copyImage(image, BufferedImage.TYPE_INT_RGB);
  			}
  		} else {
  			bufferedImage = toBufferedImage(image);
  		}
  		return bufferedImage;
  	}
docs: {@link Image} 转 {@link BufferedImage}<br>
  如果源图片的RGB模式与目标模式一致，则直接转换，否则重新绘制
  
  @param image {@link Image}
  @param imageType 目标图片类型
  @return {@link BufferedImage}
  @since 4.3.2