send email with multiple attachment in scala

Question

I have used the java mail API to send emails within our group. I am aware of the DataHandler objects that in turn uses FileDataSource to grab the files and attach as a multipart file. However, I am not able to use it in scala. Can anyone help me on this?

Heres my code:

def createMessage: Message = {
val properties = new Properties()
properties.put("mail.smtp.host", smtpHost)
properties.put("mail.smtp.port",smtpPort)
val session = Session.getDefaultInstance(properties, null)
return new MimeMessage(session)

}

var message: Message = null

  message = createMessage
  message.setFrom(new InternetAddress(from))
  message.setSentDate(new Date())
  message.setSubject(subject)
  message.setText(content)
  message.addRecipient(Message.RecipientType.TO, new InternetAddress(to))

  def sendMessage {
    Transport.send(message)
  }

I can use message.sefileName to set file name of the attachment, but how can I attach the actual files. For example in Java, we can achieve similar results like the following:

MimeBodyPart messageBodyPart1 = new MimeBodyPart();
messageBodyPart1.setText(messageText);
MimeBodyPart messageBodyPart2 = new MimeBodyPart();
FileDataSource fdatasource = new FileDataSource(file);
messageBodyPart2.setDataHandler(new DataHandler(fdatasource));
messageBodyPart2.setFileName(fdatasource.getName)
Multipart mpart = new MimeMultipart();
mpart.addBodyPart(messageBodyPart1);
mpart.addBodyPart(messageBodyPart2);
message.setContent(mpart);

I don't know Scala, but you might find it easier to use the [attachFile](https://javaee.github.io/javamail/docs/api/javax/mail/internet/MimeBodyPart.html#attachFile-java.io.File-) method. You're still going to need to create MimeMultipart and MimeBodyPart objects, of course. — Bill Shannon, Dec 27 '18 at 20:36

score 0 · Answer 1 · answered Dec 28 '18 at 18:08

I don't know this mail API, but you should be able to use a Java API the same way in Scala that you would use it in Java. If you see something like this in Java:

MimeBodyPart messageBodyPart1 = new MimeBodyPart();
messageBodyPart1.setText(messageText);

You usually want to translate it to something like this in Scala:

val messageBodyPart1: MimeBodyPart = new MimeBodyPart()
messageBodyPart1.setText(messageText)

Just translate the Java code you have posted to Scala this way and it should work as well (or not well) as it worked in Java.

send email with multiple attachment in scala

1 Answers1