Servlet and email : Email « Servlets « Java

Servlet and email

import java.util.Properties;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import sun.rmi.transport.Transport;


public class EmailServlet extends HttpServlet {

  //default value for mail server address, in case the user
  //doesn't provide one
  private final static String DEFAULT_SERVER = "";

  public void doPost(HttpServletRequest request, HttpServletResponse response)
      throws ServletException, {

    String smtpServ = DEFAULT_SERVER;

    String from = "";

    String to = "";

    String subject = "subject line";

    String emailContent = "emailContent";

    response.setContentType("text/html"); out = response.getWriter();
        .println("<html><head><title>Email message sender</title></head><body>");

    try {

      sendMessage(smtpServ, to, from, subject, emailContent);

    } catch (Exception e) {

      throw new ServletException(e.getMessage());


    out.println("<h2>The message was sent successfully</h2>");


  } //doPost

  private void sendMessage(String smtpServer, String to, String from,
      String subject, String emailContent) throws Exception {

    Properties properties = System.getProperties();

    //populate the 'Properties' object with the mail
    //server address, so that the default 'Session'
    //instance can use it.
    properties.put("", smtpServer);

    Session session = Session.getDefaultInstance(properties);

    Message mailMsg = new MimeMessage(session);//a new email message

    InternetAddress[] addresses = null;

    try {

      if (to != null) {

        //throws 'AddressException' if the 'to' email address
        //violates RFC822 syntax
        addresses = InternetAddress.parse(to, false);

        mailMsg.setRecipients(Message.RecipientType.TO, addresses);

      } else {

        throw new MessagingException(
            "The mail message requires a 'To' address.");


      if (from != null) {

        mailMsg.setFrom(new InternetAddress(from));

      } else {

        throw new MessagingException(
            "The mail message requires a valid 'From' address.");


      if (subject != null)

      if (emailContent != null)

      //Finally, send the meail message; throws a 'SendFailedException'
      //if any of the message's recipients have an invalid adress

    } catch (Exception exc) {

      throw exc;



  public void doGet(HttpServletRequest request, HttpServletResponse response)
      throws ServletException, {

    doPost(request, response);




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