sending email attachments via API code example

Example 1: sending a excel in an attachment in email java

// Define message
    Message message = new MimeMessage(session);
    message.setFrom(new InternetAddress(from));
    message.addRecipient(Message.RecipientType.TO,
      new InternetAddress(to));
    message.setSubject("Hello JavaMail Attachment");

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

    // Fill the message
    messageBodyPart.setText("Pardon Ideas");

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

    // Part two is attachment
    messageBodyPart = new MimeBodyPart();
    DataSource source = new FileDataSource(filename);
    messageBodyPart.setDataHandler(new DataHandler(source));
    messageBodyPart.setFileName(filename);
    multipart.addBodyPart(messageBodyPart);

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

    // Send the message
    Transport.send(message);

Example 2: sending a excel in an attachment in email java

ByteArrayOutputStream bos = new ByteArrayOutputStream();
xlsFile.write(bos); // write excel data to a byte array
fos.close();

// Now use your ByteArrayDataSource as
DataSource fds = new ByteArrayDataSource(bos.toByteArray(), "application/vnd.ms-excel");