Many people find it difficult sending mail from a program. This code shows how simple it is to send a mail from java Program.
package com.webaging.utils;
import java.util.Properties;
import javax.activation.DataHandler;
import javax.activation.DataSource;
import javax.activation.FileDataSource;
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;
/**
* @author Ashwin
*
*/
public class MailClient {
public void sendMail(String mailServer, String from, String to,
String subject, String messageBody, String[] attachments)
throws MessagingException, AddressException {
// Setup mail server
Properties props = System.getProperties();
props.put(“mail.smtp.host”, mailServer);
// Get a mail session
Session session = Session.getDefaultInstance(props, null);
// Define a new mail message
Message message = new MimeMessage(session);
message.setFrom(new InternetAddress(from));
message.addRecipient(Message.RecipientType.TO, new InternetAddress(to));
message.setSubject(subject);
// Create a message part to represent the body text
BodyPart messageBodyPart = new MimeBodyPart();
messageBodyPart.setText(messageBody);
// use a MimeMultipart as we need to handle the file attachments
Multipart multipart = new MimeMultipart();
// add the message body to the mime message
multipart.addBodyPart(messageBodyPart);
// add any file attachments to the message
addAtachments(attachments, multipart);
// Put all message parts in the message
message.setContent(multipart);
// Send the message
Transport.send(message);
}
protected void addAtachments(String[] attachments, Multipart multipart)
throws MessagingException, AddressException {
for (int i = 0; i <= attachments.length – 1; i++) {
String filename = attachments[i];
MimeBodyPart attachmentBodyPart = new MimeBodyPart();
// use a JAF FileDataSource as it does MIME type detection
DataSource source = new FileDataSource(filename);
attachmentBodyPart.setDataHandler(new DataHandler(source));
// assume that the filename you want to send is the same as the
// actual file name – could alter this to remove the file path
attachmentBodyPart.setFileName(filename);
// add the attachment
multipart.addBodyPart(attachmentBodyPart);
}
}
public static void main(String[] args) {
try {
MailClient client = new MailClient();
String server = “pop3.mydomain.com”;
String from = “myname@mydomain.com”;
String to = “someuser@somewhere.com”;
String subject = “Test”;
String message = “Testing”;
String[] filenames = { “c:\\somefile.txt” };
client.sendMail(server, from, to, subject, message, filenames);
} catch (Exception e) {
e.printStackTrace(System.out);
}
}
}
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