/// <summary>
        /// 将传入的base64转化成png
        /// </summary>
        [HttpPost("ChangeBase64ToPng")]
        [AllowAnonymous]
        public async Task<string> ChangeBase64ToPng(DDARShopCodeKeyInput input)
        {
            string data = "a";
            try
            {
                // 将Base64字符串转换为字节数组
                byte[] imageBytes = Convert.FromBase64String(input.base64);
                string outName = YitIdHelper.NextId().ToString();
                string outputPath = @"C:\Users\admin\Desktop\qrcode\type"+ input.type + "\\"+ outName + ".png";
                // 创建一个MemoryStream来存储字节数组
                using (MemoryStream ms = new MemoryStream(imageBytes))
                {
                    // 使用System.Drawing.Bitmap加载图像
                    using (Bitmap bitmap = new Bitmap(ms))
                    {
                        // 将图像保存为PNG文件
                        bitmap.Save(outputPath, ImageFormat.Png);
                        data = "图片已保存到：" + outputPath;
                    }
                }
            }
            catch (Exception ex)
            {
                data = "转换并保存图片时出错：" + ex.Message;
            }

            return data;
        }