Calling application from a servlet

Question

Hi,
I am having trouble sending automated email messages from a servlet. Someone else in this office has had luck with getting an application to send email. I was wondering if my servlet could call the application .class file? It is possible for a servlet to call an application and if so how do I do it?
Thanks

Answer 1

// you need activation.jar in you class path
// also note that your SMTP host may have to allow relaying from your
/ ip address
import java.io.*;
import java.net.InetAddress;
import java.util.*;
import javax.mail.*;
import javax.mail.internet.*;
import javax.activation.*;
* @author Scott Shaver
* @version
public class EMailMessage {
private static String mailHost = null;
private static String to = null;
private static String subject = null;
private static String from = null;
private static String text = null;
private static String cc = null;
private static String bcc = null;
private Vector attachments = new Vector(2);
private boolean bodyIsHTML = false;
/** Creates new Message */
public EMailMessage() {
/** Creates new Message */
public EMailMessage(String to, String from, String subject, String text) {
setTo(to);
setFrom(from);
setSubject(subject);
setText(text);
/** Creates new Message */
public EMailMessage(String to, String from, String subject, String text, String host) {
setTo(to);
setFrom(from);
setSubject(subject);
setText(text);
setMailHost(host);
public void sendNoExceptions() {
try
send();
catch(Exception x)
public void send() throws AddressException, MessagingException {
try
Properties props = System.getProperties();
props.put("mail.smtp.host", mailHost);
MimeBodyPart msgTextBP = null;
Multipart content = new MimeMultipart();
Session session = Session.getInstance(props, null);
javax.mail.Message msg = new javax.mail.internet.MimeMessage(session);
if(from!=null)
msg.setFrom(new InternetAddress(from));
if(to!=null)
msg.setRecipients(javax.mail.Message.RecipientType.TO,InternetAddress.parse(to, false));
if(cc!=null)
msg.setRecipients(javax.mail.Message.RecipientType.CC,InternetAddress.parse(cc, false));
if(bcc!=null)
msg.setRecipients(javax.mail.Message.RecipientType.BCC,InternetAddress.parse(bcc, false));
if(subject!=null)
msg.setSubject(subject);
if(text!=null)
msgTextBP = new MimeBodyPart();
if(bodyIsHTML)
msgTextBP.setContent(text, "text/html");
else
msgTextBP.setText(text);
content.addBodyPart(msgTextBP);
//msg.setText(text);
msg.setHeader("X-Mailer", "EMailMessage");
msg.setSentDate(new Date());
int fac = attachments.size();
for(int loop=0;loop<fac;loop++)
File file = (File)attachments.elementAt(loop);
DataSource source = new FileDataSource(file);
MimeBodyPart bp = new MimeBodyPart();
bp.setDataHandler(new DataHandler(source));
bp.setFileName(file.getName());
content.addBodyPart(bp);
msg.setContent(content);
Transport.send(msg);
catch(AddressException ax)
System.out.println("EMailMessage.send() AddressException");
System.out.println(ax);
ax.printStackTrace();
catch(MessagingException mx)
System.out.println("EMailMessage.send() MessagingException");
System.out.println(mx);
mx.printStackTrace();
public void addAttachment(File a) {
attachments.addElement(a);
public void setMailHost(String host) {
mailHost = host;
public String getMailHost() {
return mailHost;
public void setTo(String to) {
this.to = to;
public String getTo() {
return to;
public void setSubject(String subject) {
this.subject = subject;
public String getSubject() {
return subject;
public void setFrom(String from) {
this.from = from;
public String getFrom() {
return from;
public void setBodyIsHTML() {
bodyIsHTML = true;
public void setText(String text) {
this.text = text;
public String getText() {
return text;
public void setCC(String cc) {
this.cc = cc;
public String getCC() {
return cc;
public void setBCC(String bcc) {
this.bcc = bcc;
public String getBCC() {
return bcc;
public static void main(String[] args) {
/*EMailMessage m = new EMailMessage(
"[email protected]",
"[email protected]",
"This is the subject of a test message.",
"This is the text of the message.\nThis is another line.",
"mail");
try{
m.send();
catch(Exception x)
x.printStackTrace();