With this example we are going to see how to sent a file using FileDataSource. In this example we are using Gmail as our smtp server. This requires that you have a Google account. You may use any smtp server you want by changing the host properties.
In short, in order to send file via email you have to:
- Set the smtp host properties using a
Propertiesobject. - Create a new
Session. - Create a message using a
MimeMessage. - Set message source using
setFrom(new InternetAddress(from)). - Set message recipients use
setRecipients(Message.RecipientType.TO, address). - Create a new message part using
MimeBodyPart. - Create the second message part for the attachment.
- Create a new
FileDataSourceusingnew FileDataSource(file). - Create the
Multipartand add its parts to it. - Use a
Transportto send the email. - Use
connectto connect to the smtp host. - Use
sendMessageto send the email.
Let’s see the code:
package com.javacodegeeks.snippets.enterprise;
import java.util.Date;
import java.util.Properties;
import javax.activation.DataHandler;
import javax.activation.FileDataSource;
import javax.mail.*;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMultipart;
public class SendFileViaEmail {
/*
* In this example we are using Gmail as our smtp server. This requires that
* you have a Google account. You may use any smtp server you
* want by changing the host properties
*/
public static void main(String[] args) {
//the path of the file e.g. : "c:/Users/nikos7/Desktop/myFile.txt"
String file = "<FILE PATH>";
//destination email address
String to = "<DESTINATION EMAIL ADDRESS>";
//source email address
String from = "<YOUR EMAIL ADDRESS>";
//Your gmail password
String password = "<YOUR PASSWORD>";
String SSL_FACTORY = "javax.net.ssl.SSLSocketFactory";
//hostname of the machine that has smtp server
String host = "smtp.gmail.com";
//either turn on or turns off debugging during sending
boolean sessioDebug = true;
String messageText = "Sending a file with FileDataSourcen";
String messageSubject = "Sending a file using FileDataSource!";
// To use a smtp host other than Gmail, simply change the following properties
// according to the specifications of your host
// set the smtp host properties
Properties props = System.getProperties();
props.put("mail.smtp.host", host);
props.put("mail.transport.protocol.", "smtp");
props.put("mail.smtp.auth", "true");
props.put("mail.smtp.", "true");
props.put("mail.smtp.port", "465");
props.put("mail.smtp.socketFactory.fallback", "false");
props.put("mail.smtp.socketFactory.class", SSL_FACTORY);
Session mailSession = Session.getInstance(props, null);
mailSession.setDebug(sessioDebug);
try {
// create a message
MimeMessage message = new MimeMessage(mailSession);
//set message source
message.setFrom(new InternetAddress(from));
InternetAddress[] address = {new InternetAddress(to)};
//set message recipients
message.setRecipients(Message.RecipientType.TO, address);
message.setSubject(messageSubject);
// create and fill the first message part
MimeBodyPart messageBodyPart1 = new MimeBodyPart();
messageBodyPart1.setText(messageText);
// create the second message part
MimeBodyPart messageBodyPart2 = new MimeBodyPart();
// attach the file to the message
FileDataSource fdatasource = new FileDataSource(file);
messageBodyPart2.setDataHandler(new DataHandler(fdatasource));
messageBodyPart2.setFileName(fdatasource.getName());
// create the Multipart and add its parts to it
Multipart mpart = new MimeMultipart();
mpart.addBodyPart(messageBodyPart1);
mpart.addBodyPart(messageBodyPart2);
// add the Multipart to the message
message.setContent(mpart);
// set the Date: header
message.setSentDate(new Date());
// send the message
Transport transport = mailSession.getTransport("smtp");
transport.connect(host, from, password);
transport.sendMessage(message, message.getAllRecipients());
} catch (MessagingException mex) {
mex.printStackTrace();
Exception ex = null;
if ((ex = mex.getNextException()) != null) {
ex.printStackTrace();
}
}
}
}
This was an example on how to send file via mail using FileDataSource.
