D-Net

package eu.dnetlib.uoaadmintools.emailSender;

import org.apache.log4j.Logger;

import org.hibernate.validator.constraints.Email;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.beans.factory.annotation.Configurable;

import org.springframework.beans.factory.annotation.Value;

import org.springframework.boot.context.properties.ConfigurationProperties;

import org.springframework.context.annotation.Bean;

import org.springframework.stereotype.*;

import org.springframework.stereotype.Service;

import org.springframework.web.servlet.handler.HandlerInterceptorAdapter;

import javax.mail.*;

import javax.mail.internet.AddressException;

import javax.mail.internet.InternetAddress;

import javax.mail.internet.MimeMessage;

import java.text.SimpleDateFormat;

import java.util.*;

@Service

@Configurable

public class EmailSender {

    private static final Logger logger = Logger.getLogger(EmailSender.class);

    @Value( "${admintool.username}" )

    private String username = null;

    @Value( "${admintool.password}" )

    private String password = null;

    @Value( "${admintool.host}" )

    private String host = null;

    @Value( "${admintool.port}" )

    private String port = null;

    @Value( "${admintool.from}" )

    private String from = null;

    public boolean send(List<String> recipients, String subject, String body) {

        // Get system properties

        Properties properties = System.getProperties();

        properties.setProperty("mail.smtp.host", host);

        properties.put("mail.smtp.port", port);

        properties.put("mail.smtp.auth", "true"); //enable authentication

        properties.put("mail.smtp.starttls.enable", "true");

        logger.debug("Try to connect to mail sender with "+username);

        Session session = Session.getInstance(properties,

                new javax.mail.Authenticator() {

                    protected PasswordAuthentication getPasswordAuthentication() {

                        return new PasswordAuthentication(username, password);

                    }

                });

        try {

            logger.debug("Try to sent e-mail to "+recipients.toString()+

            "\nSubject: "+subject+

            "\nBody:"+body);

            // Create a default MimeMessage object.

            MimeMessage message = new MimeMessage(session);

            // Set From: header field of the header.

            message.setFrom(new InternetAddress(from));

            // Set To: header field of the header.

            for(String to : recipients) {

                message.addRecipient(Message.RecipientType.BCC, new InternetAddress(to));

            }

            // Set Subject: header field

            message.setSubject(subject);

            // For simple text setText() can be used instead of setContent()

            // Send the actual HTML message, as big as you like

            message.setContent(body, "text/html");

            // Send message

            Transport.send(message);

            logger.debug("Sent message successfully....\n");

            return true;

        } catch (AddressException ae) {

            logger.error("Email could not be send.", ae);

            return false;

        } catch (MessagingException me) {

            logger.error("Email could not be send.", me);

            return false;

        }

    }

}