MailNotifier.java

package com.paulbrodner.buddy;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Configuration;

import javax.annotation.PostConstruct;
import javax.mail.*;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
import java.util.Properties;

@Configuration
@ConfigurationProperties("mail")
public class MailNotifier {
    Logger logger = LoggerFactory.getLogger(MailNotifier.class);
    private Session session;

    private String username;
    private String password;
    private String to;


    @PostConstruct
    private void defineSession() {
        Properties props = new Properties();
        props.put("mail.smtp.auth", "true");
        props.put("mail.smtp.host", "smtp.gmail.com");
        props.put("mail.smtp.port", "465");
        props.put("mail.smtp.socketFactory.port", "465");
        props.put("mail.smtp.socketFactory.class", "javax.net.ssl.SSLSocketFactory");
        session = Session.getInstance(props, new javax.mail.Authenticator() {
            protected PasswordAuthentication getPasswordAuthentication() {
                return new PasswordAuthentication(getUsername(), getPassword());
            }
        });
    }

    public void sendNotification(String subject, String body) {
        logger.info("Sending email notification TO: {}, with Subject: {}", getTo(), subject);

        try {

            Message message = new MimeMessage(session);
            message.setFrom(new InternetAddress(getUsername()));
            message.setRecipients(Message.RecipientType.TO, InternetAddress.parse(getTo()));
            message.setSubject(subject);
            message.setContent(body, "text/html; charset=utf-8");

            Transport.send(message);

            logger.info("Notification Sent!");

        } catch (MessagingException e) {
            logger.error("Cannot sent Mail notification: {}", e.getMessage());
        }
    }


    public String getUsername() {
        return username;
    }

    public void setUsername(String username) {
        this.username = username;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }

    public String getTo() {
        return to;
    }

    public void setTo(String to) {
        this.to = to;
    }
}



/*
   <!-- notification -->
        <dependency>
            <groupId>javax.mail</groupId>
            <artifactId>mail</artifactId>
            <version>1.4.7</version>
        </dependency>
*/