Question

我正在使用Rotativa将我的视图转换为pdf。我想将生成的pdf作为电子邮件附件发送（而不必先将其下载到磁盘上）。我一直在遵循一堆教程来做到这一点，但我一直在转圈。我将不胜感激。

public async Task<IActionResult>SomeReport()
{
...
return new ViewAsPdf (report)
}
return view();


MemoryStream memoryStream = new MemoryStream();

MimeMessage msg = new MimeMessage();
MailboxAddress from = new MailboxAddress ("Name", "emailAddress")
msg.From.Add(from);
MailboxAddress to = new MailboxAddress ("Name", "emailAddress")
msg.From.Add(to);
BodyBuilder bd = new BodyBuilder();
bb.HtmlBody ="some text";
bb.Attachments.Add("attachmentName", new MemoryStream());
msg.Body = bb.ToMessageBody();
SmtpClient smtp = new SmtpClient();
smtp.Connect("smtp.gmail.com",465, true);
smtp.Authenticate("emailAddress", "Pwd");
smtp.Send(msg);
smtp.Disconnect(true);
smtp.Dispose();

编辑

Parent View from which Email is sent

@Model MyProject.Models.EntityViewModel 
<a asp-action= "SendPdfMail" asp-controller ="Student" asp-route-id = "@Model.Student.StudentId">Email</a>
 ...


SendPdfMail action in Student Controller
public async Task<IActionResult> SendPdfMail(string id)
{  
  var student = await context.Student. Where(s => s.StudentId == id);
  if (student != null)
  {
   ...
   var viewAsPdf = new ViewAsPdf("MyPdfView", new{route = id})
  {      
           Model = new EntityViewModel(),
            FileName = PdfFileName,

        ...
    }
   }
    };

Answer 1

没有足够的余地，但是您需要这样的东西：

MimeMessage msg = new MimeMessage();
MailboxAddress from = new MailboxAddress ("Name", "emailAddress");
msg.From.Add(from);
MailboxAddress to = new MailboxAddress ("Name", "emailAddress");
msg.To.Add(to);
BodyBuilder bb = new BodyBuilder();
bb.HtmlBody ="some text";
using (var wc = new WebClient())
{
    bb.Attachments.Add("attachmentName",wc.DownloadData("Url for your view goes here"));
}
msg.Body = bb.ToMessageBody();
using (var smtp = new SmtpClient())
{
    smtp.Connect("smtp.gmail.com",465, true);
    smtp.Authenticate("emailAddress", "Pwd");
    smtp.Send(msg);
    smtp.Disconnect(true);
}

请注意，这会在调用.ToMessageBody()的之前添加附件，并修复至少四个基本的错字。

但是我怀疑这是否足够...我怀疑ViewAsPdf()需要的上下文比您从单个DownloadData()请求获得的上下文还要多，因此您需要返回到绘图板才能能够提供该上下文，但这至少有助于将您推向正确的方向。

Answer 2

使用Rotativa.AspNetCore完整回答。代码是在VS 2019，Core 3.1，Rotativa.AspNetCore 1.1.1中开发的。

坚果

Install-package Rotativa.AspNetCore

样品控制器

public class SendPdfController : ControllerBase
{
    private const string PdfFileName = "test.pdf";

    private readonly SmtpClient _smtpClient;

    public SendPdfController(SmtpClient smtpClient)
    {
        _smtpClient = smtpClient;
    }

    [HttpGet("SendPdfMail")] // https://localhost:5001/SendPdfMail
    public async Task<IActionResult> SendPdfMail()
    {
        using var mailMessage = new MailMessage();
        mailMessage.To.Add(new MailAddress("a@b.c"));
        mailMessage.From = new MailAddress("c@d.e");
        mailMessage.Subject = "mail subject here";

        var viewAsPdf = new ViewAsPdf("view name", <YOUR MODEL HERE>)
        {
            FileName = PdfFileName,
            PageSize = Size.A4,
            PageMargins = { Left = 1, Right = 1 }
        };
        var pdfBytes = await viewAsPdf.BuildFile(ControllerContext);

        using var attachment = new Attachment(new MemoryStream(pdfBytes), PdfFileName);
        mailMessage.Attachments.Add(attachment);

        _smtpClient.Send(mailMessage); // _smtpClient will be disposed by container

        return new OkResult();
    }
}

选项类

public class SmtpOptions
{
    public string Host { get; set; }
    public int Port { get; set; }
    public string Username { get; set; }
    public string Password { get; set; }
}

在Startup＃ConfigureServices

services.Configure<SmtpOptions>(Configuration.GetSection("Smtp"));

// SmtpClient is not thread-safe, hence transient
services.AddTransient(provider =>
{
    var smtpOptions = provider.GetService<IOptions<SmtpOptions>>().Value;
    return new SmtpClient(smtpOptions.Host, smtpOptions.Port)
    {
      // Credentials and EnableSsl here when required
    };
});

appsettings.json

{
  "Smtp": {
    "Host": "SMTP HOST HERE",
    "Port": PORT NUMBER HERE,   
    "Username": "USERNAME HERE",
    "Password": "PASSWORD HERE"
  }
}

发送生成的PDF作为电子邮件附件Asp.NetCore

2 个答案: