/// <summary> /// 保存base64文件 /// </summary> /// <param name="base64"></param> /// <param name="dir">目录信息</param> /// <returns></returns> protected TempFileInfo SaveBase64Image(string base64, IDir dir) { if (base64.IsNullOrEmpty()) { return(new TempFileInfo()); } Span <byte> span = new Span <byte>(new byte[base64.Length]); int outLen; if (!Convert.TryFromBase64String(base64, span, out outLen)) { return(new TempFileInfo()); } using var memStream = new MemoryStream(span.ToArray()); using var bitmap = new Bitmap(memStream); var fileName = $"{Guid.NewGuid()}.jpg"; FileInfo fileInfo = new FileInfo(dir.GetUpFilePathWithSystem(fileName)); using var fileStream = fileInfo.Create(); bitmap.Save(fileStream, System.Drawing.Imaging.ImageFormat.Jpeg); return(new TempFileInfo { ServerDirPath = dir.GetDownFileDir(), ServerFileName = fileName }); }