使用ITextSharp从内存流中附加PDF文件时遇到问题

我在附加在内存中创建的PDF文件并将其附加到电子邮件模板时遇到问题。

电子邮件没有任何问题..但没有附件。 我不明白为什么会这样。

这是该过程的完整代码。

ExtendedEmailTemplate emailTemp = new ExtendedEmailTemplate(); emailTemp.FromAddress = "ABC Ltd "; emailTemp.ToAddress = custEmail; emailTemp.Body = "This is an Test Email" emailTemp.IsHTML = true; // getting the memorystream of cretaed PDF file in memory MemoryStream pdfStream = MWProductGuaranteedHelper.CreateProductGuaranteeCertificatePDF(custName, guranteeCode, productName); // getting the MailMessage by passing the memorystream and attach the PDF MailMessage emailMessage = ExtendedEmailTemplate.GenerateMailMessage(emailTemp, pdfStream); // sending an email with by passing the (MailMessage) emailTemp.SendGuaranteeCertificateAttachmentEmail(emailMessage); 

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在内存中创建PDF

 public static MemoryStream CreateProductGuaranteeCertificatePDF(string custName, string guaranteeCode, string productName) { MemoryStream memoryStream = new MemoryStream(); string guaranteedUntil = DateTime.Now.AddYears(3).ToString("dd-MM-yyyy"); string fromFile = Server.MapPath(guaranteeCertificateFilePath); PdfReader reader = new PdfReader(fromFile); PdfStamper stamper = new PdfStamper(reader, memoryStream); AcroFields fields = stamper.AcroFields; // AcroFields setting CODE EMITTED stamper.Writer.CloseStream = false; // making sure that stream stays open after closing the stamper stamper.FormFlattening = false; stamper.Close(); reader.Close(); memoryStream.Position = 0; // reset the position of the stream, so that attachment works right return memoryStream; } 

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生成MailMessage

 public static MailMessage GenerateMailMessage(ExtendedEmailTemplate template, MemoryStream _ms) { MailMessage mailMessage = new MailMessage(); mailMessage.From = new MailAddress(template.FromAddress); mailMessage.To.Add(template.ToAddress); mailMessage.Subject = template.Subject; mailMessage.Body = template.Body; mailMessage.Attachments.Add(new Attachment(_ms, "ABC-Certificate.Pdf", "application/pdf")); mailMessage.IsBodyHtml = template.IsHTML; return mailMessage; } 

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发送电子邮件

 public void SendGuaranteeCertificateAttachmentEmail(MailMessage _message) { EmailClient.Send(_message); } public static void Send(MailMessage mailMessage) // SMTP Settings CODE Emitted. { //SEND THE MAIL MESSAGE smtpClient.Send(mailMessage); } 

我不知道这段代码出了什么问题……电子邮件没有任何附件。

帮助赞赏。

Answer 1

虽然通过解析网页来创建我的pdf，但我无法看到你做错了什么，但我正在做类似的事情。 这是我做的：

  public static Attachment GetPDfAttachmentFromUrl(string url) { string download = new WebClient().DownloadString(url); MemoryStream ms = new MemoryStream(); Document document = new Document(PageSize.A4, 80, 50, 30, 65); PdfWriter writer = PdfWriter.GetInstance(document, ms); try { StringReader stringReader = new StringReader(download); List parsedList = HTMLWorker.ParseToList(stringReader, null); document.Open(); foreach (object item in parsedList) { document.Add((IElement)item); } document.Close(); stringReader.Close(); MemoryStream pdfstream = new MemoryStream(ms.ToArray()); //create attachment Attachment attachment = new Attachment(pdfstream, "transaction.pdf"); return attachment; } catch (Exception exc) { Console.Error.WriteLine(exc.Message); } return null; } 

然后在另一个地方我发送它：

  MailMessage mm = new MailMessage(from, to); mm.Body = body; mm.Subject = subject; mm.IsBodyHtml = true; mm.Attachments.Add(attachment); SmtpClient smtp = new SmtpClient(); smtp.Send(mm); 

这有帮助吗？