public static boolean sendEmail(String from, String to, String subject, String message) {
// create a new authenticator for the SMTP server
EmailUtilsAuthenticator authenticator = new EmailUtilsAuthenticator();
// Get system properties
Properties properties = System.getProperties();
// Setup mail server
properties.setProperty(MAIL_SMTP_HOST, Configuration.getSmtpHost());
// setup the authentication
properties.setProperty(MAIL_SMTP_AUTH, "true");
// Get the Session object with the authenticator.
Session session = Session.getInstance(properties, authenticator);
try {
MimeMessage mime = new MimeMessage(session);
mime.setFrom(new InternetAddress(from));
mime.addRecipient(Message.RecipientType.TO, new InternetAddress(to));
mime.setSubject(subject);
mime.setText(message);
// Send it
Transport.send(mime);
return true;
} catch (MessagingException mex) {
logger.error("sendEmail(String, String, String, String) - exception ", mex);
return false;
}
}
/**
* Daily mail company digest, get all the users subscribed and send them emails abou the
* comapnies.
*/
@Schedule(hour = "0")
public void dailyMailCompanyDigest() {
if (logger.isDebugEnabled()) {
logger.debug("dailyMailCompanyDigest - start");
}
// get all users with associated companies (fetch get all the lazy connections)
Query query =
entityManager.createQuery("SELECT u FROM User u join fetch u.subscribedCompanies");
@SuppressWarnings("unchecked")
List<User> userList = query.getResultList();
if (true == userList.isEmpty()) {
logger.info("dailyMailCompanyDigest - no users to process");
} else {
// set the email subject for all the users
String subject =
String.format(
"Daily Company Digest %1$te/%1$tm/%1$tY at %1$tH:%1$tM:%1$tS%n", new Date());
for (User user : userList) {
if (StringUtils.IsNullOrWhiteSpace(user.getEmail())) {
logger.info(
String.format("dailyMailCompanyDigest user %s has no email", user.getUsername()));
} else {
String messageCompanies = buildSubjectCompanies(user.getSubscribedCompanies());
boolean status =
EmailUtils.sendEmail(
Configuration.getEmailFromAddress(), user.getEmail(), subject, messageCompanies);
if (!status) {
logger.info(
String.format(
"dailyMailCompanyDigest error sending email user %s", user.getUsername()));
}
}
}
}
if (logger.isDebugEnabled()) {
logger.debug("dailyMailCompanyDigest - end");
}
}