package com.jspservletcookbook;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Properties;
import javax.mail.*;
import javax.mail.internet.*;
import javax.servlet.*;
import javax.servlet.http.*;
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 = "mail.attbi.com";
public void doPost(HttpServletRequest request,
HttpServletResponse response) throws ServletException,
java.io.IOException {
//obtain the values for email components from
//request parameters
String smtpServ = request.getParameter("smtp");
if (smtpServ == null || smtpServ.equals(""))
smtpServ = DEFAULT_SERVER;
String from = request.getParameter("from");
String to = request.getParameter("to");
String subject = request.getParameter("subject");
String emailContent = request.getParameter("emailContent");
response.setContentType("text/html");
java.io.PrintWriter out = response.getWriter();
out.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>");
out.println("</body></html>");
} //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("mail.smtp.host", 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)
mailMsg.setSubject(subject);
if (emailContent != null)
mailMsg.setText(emailContent);
//Finally, send the meail message; throws a 'SendFailedException'
//if any of the message's recipients have an invalid adress
Transport.send(mailMsg);
} catch (Exception exc) {
throw exc;
}
}//sendMessage
public void doGet(HttpServletRequest request,
HttpServletResponse response) throws ServletException,
java.io.IOException {
doPost(request, response);
}
}//EmailServlet
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