JAVA-MANI.BLOGSPOT.COM

In this example we create a small program to send email with a file attachment. To send message with attachment we need to create an email with javax.mail.Multipart object which basically will contains the email text message and then add a file to the second block, which both of them is an object of javax.mail.internet.MimeBodyPart. In this example we also use the javax.activation.FileDataSource.

package org.kodejava.example.mail;

import java.util.Date;
import java.util.Properties;
import javax.activation.DataHandler;
import javax.activation.FileDataSource;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Multipart;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMultipart;

public class EmailAttachmentDemo {
public static void main(String[] args) {
EmailAttachmentDemo demo = new EmailAttachmentDemo();
demo.sendEmail();
}

public void sendEmail() {
String from = "me@localhost";
String to = "me@localhost";
String subject = "Important Message";
String bodyText = "This is a important message with attachment";
String filename = "message.pdf";

Properties properties = new Properties();
properties.put("mail.stmp.host", "localhost");
properties.put("mail.smtp.port", "25");
Session session = Session.getDefaultInstance(properties, null);

try {
MimeMessage message = new MimeMessage(session);
message.setFrom(new InternetAddress(from));
message.setRecipient(Message.RecipientType.TO, new InternetAddress(to));
message.setSubject(subject);
message.setSentDate(new Date());

//
// Set the email message text.
//
MimeBodyPart messagePart = new MimeBodyPart();
messagePart.setText(bodyText);

//
// Set the email attachment file
//
MimeBodyPart attachmentPart = new MimeBodyPart();
FileDataSource fileDataSource = new FileDataSource(filename) {
@Override
public String getContentType() {
return "application/octet-stream";
}
};
attachmentPart.setDataHandler(new DataHandler(fileDataSource));
attachmentPart.setFileName(filename);

Multipart multipart = new MimeMultipart();
multipart.addBodyPart(messagePart);
multipart.addBodyPart(attachmentPart);

message.setContent(multipart);

Transport.send(message);
} catch (MessagingException e) {
e.printStackTrace();
}
}
}