Java mail sample

Here is a sample to send mail by java mail. It also attach some data in memory as an attach file.

In this sample, the mime type is “text/plain”, it could be jpg, pdf… to get the full list of mime type, see http://www.w3schools.com/media/media_mimeref.asp

package com.telus.itms;

import java.util.ArrayList;
import java.util.List;
import java.util.Properties;

import javax.mail.Address;
import javax.mail.BodyPart;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Multipart;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.AddressException;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMultipart;


public class MailSender {
	
	public static void main(String[] args) throws MessagingException {
		EmailTemplate email = new EmailTemplate();
		email.setSmtpHost("bcmsg.tsl.telus.com");
		email.setFrom("yao.dong@telus.com");
		email.setTo(new String[]{"yao.dong@telus.com", "dong_yao@hotmail.com"});
		email.setAttachNameToDispaly("status.txt");
		email.setContent("attchment content");
		email.setContentType("text/plain");
		email.setSubject("TEST EMAIL");
		email.setText("TEST EMAIL CONTENT");
		
		sendMessage(email);

	}

	private static void sendMessage(final EmailTemplate email) throws MessagingException, AddressException {
		// Create empty properties
		Properties props = new Properties();
		
		// Setup mail server
		props.put("mail.smtp.host", email.getSmtpHost());

		// Get session
		Session session = Session.getDefaultInstance(props, null);

		
		// Define message
		Message message = new MimeMessage(session);
		message.setFrom(new InternetAddress(email.getFrom()));
		
		List toAddressList = new ArrayList();
		for (int i=0; i			toAddressList.add(new InternetAddress(email.getTo()[i]));
		}
		message.addRecipients(Message.RecipientType.TO, (Address[])toAddressList.toArray(new Address[]{}));
		message.setSubject(email.getSubject());

		// Create the message part 
		BodyPart messageBodyPart = new MimeBodyPart();

		// Fill the message
		messageBodyPart.setText(email.getText());

		Multipart multipart = new MimeMultipart();
		multipart.addBodyPart(messageBodyPart);

		// Part two is attachment
		messageBodyPart = new MimeBodyPart();
		messageBodyPart.setFileName(email.getAttachNameToDispaly());
		messageBodyPart.setContent(email.getContent(), email.getContentType());
		multipart.addBodyPart(messageBodyPart);

		// Put parts in message
		message.setContent(multipart);

		// Send the message
		Transport.send(message);
	}
	
	public static class EmailTemplate {
		private String smtpHost;
		private String from;
		private String[] to;
		private String subject;
		private String text;
		private String attachNameToDispaly;
		private Object content;
		private String contentType;
		public String getFrom() {
			return from;
		}
		public void setFrom(String from) {
			this.from = from;
		}
		public String[] getTo() {
			return to;
		}
		public void setTo(String[] to) {
			this.to = to;
		}
		public String getSubject() {
			return subject;
		}
		public void setSubject(String subject) {
			this.subject = subject;
		}
		public String getText() {
			return text;
		}
		public void setText(String text) {
			this.text = text;
		}
		public String getAttachNameToDispaly() {
			return attachNameToDispaly;
		}
		public void setAttachNameToDispaly(String attachNameToDispaly) {
			this.attachNameToDispaly = attachNameToDispaly;
		}
		public Object getContent() {
			return content;
		}
		public void setContent(Object content) {
			this.content = content;
		}
		public String getContentType() {
			return contentType;
		}
		public void setContentType(String contentType) {
			this.contentType = contentType;
		}
		public String getSmtpHost() {
			return smtpHost;
		}
		public void setSmtpHost(String smtpHost) {
			this.smtpHost = smtpHost;
		}
	}
}