Session Listener not getting invoked

[Krishna Sri Divi]

Hi, I'm new to servlets and JSPs. I created a test session listener (source from rose india).
Listener code
--------------

  
public void sessionCreated(HttpSessionEvent sessionEvent) {
	// Get the session that was created
	HttpSession session = sessionEvent.getSession();
	// Store something in the session, and log a message
	try {
		System.out.println("Session created: "+session);
		session.setAttribute("dog", "labrador");
		session.setAttribute("name", "Diana");
	} catch (Exception e) {
		e.printStackTrace();
		System.out.println("Error in setting session attribute: " +
		e.getMessage());
	}
}

public void sessionDestroyed(HttpSessionEvent sessionEvent) {
	// Get the session that was invalidated
	HttpSession session = sessionEvent.getSession();
	// Log a message
	System.out.println("Session invalidated: "+session);
	System.out.println("The breed of the dog is: " + session.getAttribute("dog"));
	System.out.println("The name of the dog is : " + session.getAttribute("name"));
	
} 

Servlet
-------

public void doGet(HttpServletRequest request,HttpServletResponse response) throws ServletException, IOException{
		response.setContentType("text/html");
		PrintWriter pw = response.getWriter();
		HttpSession session= request.getSession();
		String str = (String)session.getAttribute("dog");
		String dogName = (String)session.getAttribute("name");
		System.out.println("Before taking to print writer");
		pw.println("The breed of the dog is from Servlet:: " + str);
		pw.println("The name of the dog is ::" + dogName);
} 
 

web.xml
---------

 
<web-app xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd" version="2.4">
<servlet>
	<servlet-name>Rose India</servlet-name>
	<servlet-class>com.example.ServletListenerSession</servlet-class>
</servlet>
<servlet-mapping>
	<servlet-name>Rose India</servlet-name>
	<url-pattern>/rose.do</url-pattern>
</servlet-mapping>
<listener>
	<listner-class>com.example.ListenerSession</listner-class>
</listener>	
</web-app>

I deployed this app in tomcat web server. According to my understanding i should able to see the print statements in listener class either in console or logs when it gets invoked. Please correct me if i'm wrong. I could see only servlet print statements on console but not listener's. Any enlightenment is much helpful.
Regards,
Krishna sri.

[Jeanne Boyarsky]

Krishna,
I'm surprised Tomcat doesn't give you and error about bad web.xml. It should be:

 <listener>  
     <listener-class>com.example.ListenerSession</listener-class>  
 </listener>  

You were missing an "e" in listener.

[Seetharaman Venkatasamy]

Jeanne Boyarsky wrote:You were missing an "e" in listener.

excellent Jeanne

[Krishna Sri Divi]

Thanks so much Jeanne! Very nice catch. . Surprisingly this error was not visible in logs and application was not running as expected.

[William Brogden]

Are you actually seeing those attributes when the sessionDestroyed method is called?

I have been under the impression that you can't rely on session contents still being there when sessionDestroyed is called.

Bill
PS: AHA - I get to answer my own question. Prior to servlet API 2.4 the state was undefined. API 2.3 definitively states that sessionDestroyed is called before the session is invalidated. I think I got bit by this years ago with an early Tomcat version.