Mega Code Archive
Accessing a java mail session from a servlet
<![CDATA[
package com.ack.web.servlet;
import java.io.IOException;
import java.io.PrintWriter;
import javax.mail.Message;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
* configure a resource reference within the web.xml file
* that is a container managed javamail session object
*
<web-app>
...
<resource-ref>
<description>smtp mail out</description>
<res-ref-name>mail/smtp</res-ref-name>
<res-type>javax.mail.Session</res-type>
<res-auth>CONTAINER</res-auth>
</resource-ref>
</web-app>
*
* and use your vendor specific xml file to map the
* resource name to the jndi name, eg for weblogic
*
<weblogic-web-app>
...
<reference-descriptor>
<resource-description>
<res-ref-name>mail/smtp</res-ref-name>
<jndi-name>mail/dailyplanet</jndi-name>
</resource-description>
...
</reference-descriptor>
</weblogic-web-app>
*
*
*/
public class AccessingAJavaMailSessionFromAServlet extends HttpServlet {
public void doGet( HttpServletRequest req, HttpServletResponse res )
throws ServletException, IOException {
res.setContentType( "text/html" );
PrintWriter pw = res.getWriter();
try {
// get hold of the JavaMail session
Context ctx = new InitialContext();
Session mailSession = (Session) ctx.lookup( "java:comp/env/mail/smtp" );
// create a message
Message msg = new MimeMessage( mailSession );
msg.setSubject( "a servlet test email" );
msg.setSentDate( new java.util.Date( System.currentTimeMillis() ) );
msg.setText( "<h1>Hello You</h1>" );
msg.addHeader( "Content-Type", "text/html" );
msg.setFrom( new InternetAddress( "x@xxx" ) );
msg.setRecipient( Message.RecipientType.TO,
new InternetAddress( "cleve" ) );
// send it
Transport.send( msg );
// and provide feedback to the use
pw.println( "message sent!" );
}
catch( Exception ex ) {
// if we get a problem, log it
log( "problem sending message", ex );
// and send an error back to the client
res.sendError( res.SC_INTERNAL_SERVER_ERROR, ex.getMessage() );
}
}
}
]]>