Sending Email through Gmail Server Using JavaServlets


import java.io.*;

import java.net.*;



import java.util.Properties;

import javax.mail.AuthenticationFailedException;

import javax.mail.Authenticator;

import javax.mail.PasswordAuthentication;

import javax.mail.Message;

import javax.mail.MessagingException;

import javax.mail.Session;

import javax.mail.Transport;

import javax.mail.internet.AddressException;

import javax.mail.internet.InternetAddress;

import javax.mail.internet.MimeMessage;

import javax.servlet.*;

import javax.servlet.http.*;



public class SendEmail extends HttpServlet {



 protected void processRequest(HttpServletRequest request,

                                  HttpServletResponse response)

                   throws IOException, ServletException {



        final String err = "/error.jsp";

        //final String succ = "/success.jsp";



        String from = "abc@gmail.com"    // Sender Email-Id

        String to = "xyz@gmail.com"     // Receiver Email-Id



System.out.println("mail : "+to);

        String subject = "Subject";          //Your Subject.

        String message = "Message"    Your Message



        String login = "abc@gmail.com";        //Sender Mail_Id

        String password = "xyx"; //Sender Mail Password



        try {

            Properties props = new Properties();

            props.setProperty("mail.host", "smtp.gmail.com");

            props.setProperty("mail.smtp.port", "587");

            props.setProperty("mail.smtp.auth", "true");

            props.setProperty("mail.smtp.starttls.enable", "true");



            Authenticator auth = new SMTPAuthenticator(login, password);



            Session session = Session.getInstance(props,auth);



            MimeMessage msg = new MimeMessage(session);

            msg.setText(message);

            msg.setSubject(subject);

            msg.setFrom(new InternetAddress(from));

            msg.addRecipient(Message.RecipientType.TO, new InternetAddress(to));

            Transport.send(msg);



        } catch (AuthenticationFailedException ex) {

            request.setAttribute("ErrorMessage", "Authentication failed");



            RequestDispatcher dispatcher = request.getRequestDispatcher(err);

            dispatcher.forward(request, response);

            return;



        } catch (AddressException ex) {

            request.setAttribute("ErrorMessage", "Wrong email address");



            RequestDispatcher dispatcher = request.getRequestDispatcher(err);

            dispatcher.forward(request, response);

            return;

        } catch (MessagingException ex) {

           request.setAttribute("ErrorMessage", ex.getMessage());

       

            RequestDispatcher dispatcher = request.getRequestDispatcher(err);

            dispatcher.forward(request, response);

            return;

        }

            RequestDispatcher dispatcher = request.getRequestDispatcher("/success.jsp?email="+to);

            dispatcher.forward(request, response);

            return;

    }



    private class SMTPAuthenticator extends Authenticator {



        private PasswordAuthentication authentication;



        public SMTPAuthenticator(String login, String password) {

            authentication = new PasswordAuthentication(login, password);

        }



        protected PasswordAuthentication getPasswordAuthentication() {

            return authentication;

        }

    }



    protected void doPost(HttpServletRequest request,

                         HttpServletResponse response)

                   throws ServletException, IOException {

        processRequest(request, response);

    }



 

}





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