Sending attachments with mails

We can also attach various kinds of files to the mail. This functionality is supported by the MimeMessageHelper class. If you just want to send a MIME message without an attachment, you can opt for MimeMesagePreparator. If the requirement is to have an attachment to be sent with the mail, we can go for the MimeMessageHelper class with file APIs.

Spring provides a file class named org.springframework.core.io.FileSystemResource, which has a parameterized constructor that accepts file objects.

public class SendMailwithAttachment {
  public static void main(String[] args) throws MessagingException {
    AnnotationConfigApplicationContext ctx = new AnnotationConfigApplicationContext();
    ctx.register(AppConfig.class);
    ctx.refresh();
    JavaMailSenderImpl mailSender = ctx.getBean(JavaMailSenderImpl.class);
    MimeMessage mimeMessage = mailSender.createMimeMessage();
    //Pass true flag for multipart message
    MimeMessageHelper mailMsg = new MimeMessageHelper...