给图片打上多个log，并指定 x、y坐标

    /**
     * 读取正方形 log图片(200x200)
     * @param img
     * @param width log图片的放大倍数
     * @return
     * @throws IOException
     */
    public BufferedImage resizeImage(String img, int width) throws IOException {
        width *= 200;
        BufferedImage image = ImageIO.read(new File(img));
        Image resultingImage = image.getScaledInstance(width , width , Image.SCALE_AREA_AVERAGING);
        BufferedImage outputImage = new BufferedImage(width , width , BufferedImage.TYPE_INT_ARGB);
        outputImage.getGraphics().drawImage(resultingImage, 0, 0, null);
        return outputImage;
    }
    /**
     * @param imagePath   原始图片路径
     * @param watermarkPath 水印图片路径
     * @param outputPath    输出图片路径
     * @param list  log图片的参数
     * @throws IOException
     */
    public  void addWatermark(String imagePath, String watermarkPath, String outputPath, List<CodePositionVo> list) throws IOException{
        BufferedImage image = ImageIO.read(new File(imagePath));
        BufferedImage watermark = null;
        // 图片打码
        for (CodePositionVo item : list){
            watermark = resizeImage(watermarkPath,item.getWidth());

            Graphics2D graphics2D = image.createGraphics();
            graphics2D.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
            graphics2D.drawImage(watermark, item.getX(), item.getY(), null);
            graphics2D.dispose();
        }
        ImageIO.write(image, "jpg", new File(outputPath));
    }

@Data
@AllArgsConstructor
@NoArgsConstructor
public class CodePositionVo {
　　 // 图片放大的倍速
    int width; 
　　// x、y 坐标原点（0,0） 是图片左上角
    int x;
    int y;
}