JAVA获取图片宽高（Base64格式）

    public static BufferedImage getImageInfo(String chart) throws IOException{
        String base64Image = chart.replaceFirst("data:image/png;base64,", "");
        if(StringUtils.isNotEmpty(chart)){
            byte [] decoder = new BASE64Decoder().decodeBuffer(base64Image);
            InputStream is=new ByteArrayInputStream(decoder);
            return ImageIO.read(is);
        }
        return null;
    }

    public static void main(String[] args) {
        try {
            BufferedImage bufferedImage = getImageInfo("这里传base64图片");
            System.out.println(bufferedImage.getHeight());
            System.out.println(bufferedImage.getWidth());
        } catch (IOException e) {
            e.printStackTrace();
        }
    }