java - 缩放新的图片

/**
     * 缩放新的图片
     */
    public static String scaleImg(String waterLogoPath, String waterLogoPathTmp, String suffix, ImgWH wh) {
        try {
            suffix = suffix.replace(".", "");
            File srcfile = new File(waterLogoPath);
            Image src = ImageIO.read(srcfile);
            //创建画布
            BufferedImage bufferedImage = new BufferedImage(wh.getWidth(), wh.getHeight(), BufferedImage.TYPE_INT_RGB);
            //设为透明底色
            BufferedImageGraphicsConfig config = BufferedImageGraphicsConfig.getConfig(bufferedImage);
            bufferedImage = config.createCompatibleImage(wh.getWidth(), wh.getHeight(), Transparency.TRANSLUCENT);
            //绘制
            bufferedImage.getGraphics().drawImage(src.getScaledInstance(wh.getWidth(), wh.getHeight(), Image.SCALE_SMOOTH),
                    0, 0, null);
            //存储图片
            ImageIO.write(bufferedImage, suffix, new File(waterLogoPathTmp));
        } catch (Exception e) {
            e.printStackTrace();
            return ExceptionUtils.getErrorStackTrace(e);
        }
        return null;
    }