使用Amazon-SES发送附件

Question

我正在寻找一个有效的C#示例,用于向Amazon-SES发送附件.

在阅读了Amazon-SES现在支持发送附件后,我正在搜索C#示例,但无法找到它.

Answer 1

我认为使用AWS SDK for .NET和MimeKit是非常简单和干净的解决方案.您可以通过SES API(而不是SMTP)发送带附件的电子邮件.

您可以直接将MimeMessage写入MemoryStream,然后将其与SES SendRawEmail一起使用:

using Amazon.SimpleEmail;
using Amazon.SimpleEmail.Model;
using Amazon;
using Amazon.Runtime;
using MimeKit;

private static BodyBuilder GetMessageBody()
{
    var body = new BodyBuilder()
    {
        HtmlBody = @"<p>Amazon SES Test body</p>",
        TextBody = "Amazon SES Test body",
    };
    body.Attachments.Add(@"c:\attachment.txt");
    return body;
}

private static MimeMessage GetMessage()
{
    var message = new MimeMessage();
    message.From.Add(new MailboxAddress("Foo Bar", "foo@bar.com"));
    message.To.Add(new MailboxAddress(string.Empty, "foobar@example.com"));
    message.Subject = "Amazon SES Test";
    message.Body = GetMessageBody().ToMessageBody();
    return message;
}

private static MemoryStream GetMessageStream()
{
    var stream = new MemoryStream();
    GetMessage().WriteTo(stream);
    return stream;
}

private void SendEmails()
{
    var credentals = new BasicAWSCredentials("<aws-access-key>", "<aws-secret-key>");

    using (var client = new AmazonSimpleEmailServiceClient(credentals, RegionEndpoint.EUWest1))
    {
        var sendRequest = new SendRawEmailRequest { RawMessage = new RawMessage(GetMessageStream()) };
        try
        {
            var response = client.SendRawEmail(sendRequest);
            Console.WriteLine("The email was sent successfully.");
        }
        catch (Exception e)
        {
            Console.WriteLine("The email was not sent.");
            Console.WriteLine("Error message: " + e.Message);
        }
    }
}

Answer 2

public Boolean SendRawEmail(String from, String to, String cc, String Subject, String text, String html, String replyTo, string attachPath)
    {
        AlternateView plainView = AlternateView.CreateAlternateViewFromString(text, Encoding.UTF8, "text/plain");
        AlternateView htmlView = AlternateView.CreateAlternateViewFromString(html, Encoding.UTF8, "text/html");

        MailMessage mailMessage = new MailMessage();

        mailMessage.From = new MailAddress(from);

        List<String> toAddresses = to.Replace(", ", ",").Split(',').ToList();

        foreach (String toAddress in toAddresses)
        {
            mailMessage.To.Add(new MailAddress(toAddress));
        }

        List<String> ccAddresses = cc.Replace(", ", ",").Split(',').Where(y => y != "").ToList();

        foreach (String ccAddress in ccAddresses)
        {
            mailMessage.CC.Add(new MailAddress(ccAddress));
        }

        mailMessage.Subject = Subject;
        mailMessage.SubjectEncoding = Encoding.UTF8;

        if (replyTo != null)
        {
            mailMessage.ReplyToList.Add(new MailAddress(replyTo));
        }

        if (text != null)
        {
            mailMessage.AlternateViews.Add(plainView);
        }

        if (html != null)
        {
            mailMessage.AlternateViews.Add(htmlView);
        }

        if (attachPath.Trim() != "")
        {
            if (System.IO.File.Exists(attachPath))
            {
                System.Net.Mail.Attachment objAttach = new System.Net.Mail.Attachment(attachPath);
                objAttach.ContentType = new ContentType("application/octet-stream"); 
                System.Net.Mime.ContentDisposition disposition = objAttach.ContentDisposition;
                disposition.DispositionType = "attachment";
                disposition.CreationDate = System.IO.File.GetCreationTime(attachPath);
                disposition.ModificationDate = System.IO.File.GetLastWriteTime(attachPath);
                disposition.ReadDate = System.IO.File.GetLastAccessTime(attachPath);
                mailMessage.Attachments.Add(objAttach);
            }
        }

        RawMessage rawMessage = new RawMessage();

        using (MemoryStream memoryStream = ConvertMailMessageToMemoryStream(mailMessage))
        {
            rawMessage.WithData(memoryStream);
        }

        SendRawEmailRequest request = new SendRawEmailRequest();
        request.WithRawMessage(rawMessage);

        request.WithDestinations(toAddresses);
        request.WithSource(from);

        AmazonSimpleEmailService ses = AWSClientFactory.CreateAmazonSimpleEmailServiceClient(ConfigurationManager.AppSettings.Get("AccessKeyId"), ConfigurationManager.AppSettings.Get("SecretKeyId"));

        try
        {
            SendRawEmailResponse response = ses.SendRawEmail(request);
            SendRawEmailResult result = response.SendRawEmailResult;
            return true;
        }
        catch (AmazonSimpleEmailServiceException ex)
        {
            return false;
        }
    }
    public static MemoryStream ConvertMailMessageToMemoryStream(MailMessage message)
    {
        Assembly assembly = typeof(SmtpClient).Assembly;
        Type mailWriterType = assembly.GetType("System.Net.Mail.MailWriter");
        MemoryStream fileStream = new MemoryStream();
        ConstructorInfo mailWriterContructor = mailWriterType.GetConstructor(BindingFlags.Instance | BindingFlags.NonPublic, null, new[] { typeof(Stream) }, null);
        object mailWriter = mailWriterContructor.Invoke(new object[] { fileStream });
        MethodInfo sendMethod = typeof(MailMessage).GetMethod("Send", BindingFlags.Instance | BindingFlags.NonPublic);
        sendMethod.Invoke(message, BindingFlags.Instance | BindingFlags.NonPublic, null, new[] { mailWriter, true }, null);
        MethodInfo closeMethod = mailWriter.GetType().GetMethod("Close", BindingFlags.Instance | BindingFlags.NonPublic);
        closeMethod.Invoke(mailWriter, BindingFlags.Instance | BindingFlags.NonPublic, null, new object[] { }, null);
        return fileStream;
    }

发现在这里

更新:.NET 4.5中的方法签名已更改,这打破了上述内容: 在.NET 4.5 beta中将System.Net.Mail.MailMessage作为MemoryStream

Answer 3

这是使用 MimeKit 的一个非常简单的实现

using Amazon;
using Amazon.SimpleEmail;
using Amazon.SimpleEmail.Model;
using MimeKit;
using System.IO;

namespace SendEmailWithAttachments
{
 class Program
 {
    static void Main(string[] args)
    {
        //Remember to enter your (AWSAccessKeyID, AWSSecretAccessKey) if not using and IAM User with credentials assigned to your instance and your RegionEndpoint
        using (var client = new AmazonSimpleEmailServiceClient("YourAWSAccessKeyID", "YourAWSSecretAccessKey", RegionEndpoint.USEast1))
        using (var messageStream = new MemoryStream())
        {
            var message = new MimeMessage();
            var builder = new BodyBuilder() { TextBody = "Hello World" };

            message.From.Add(new MailboxAddress("FROMADDRESS@TEST.COM"));
            message.To.Add(new MailboxAddress("TOADDRESS@TEST.COM"));
            message.Subject = "Hello World";

            //I'm using the stream method, but you don't have to.
            using (FileStream stream = File.Open(@"Attachment1.pdf", FileMode.Open)) builder.Attachments.Add("Attachment1.pdf", stream);
            using (FileStream stream = File.Open(@"Attachment2.pdf", FileMode.Open)) builder.Attachments.Add("Attachment2.pdf", stream);

            message.Body = builder.ToMessageBody();
            message.WriteTo(messageStream);

            var request = new SendRawEmailRequest()
            {
                RawMessage = new RawMessage() { Data = messageStream }
            };

            client.SendRawEmail(request);
        }
    }
  }
}

我的存储库中有代码https://github.com/gianluis90/amazon-send-email

Answer 4

我不确定这是否是您正在寻找的内容，但这是我能够找到的关于该主题的唯一资源。我也希望这个问题有更好的答案。

http://docs.amazonwebservices.com/ses/latest/DeveloperGuide/

它说明了如何使用它，但非常神秘，至少对我来说。

还有更好的指南吗？