Deployment issue in Spring +Blazeds

Hi

When i try to hit the deployed appliation, iam getting following error in my tomcat 7.0.23 console. Though my application deployed properly. i didnt see any error during the deployment

[BlazeDS]HttpFlexSession has not been registered as a listener in web.xml for this application so no events will be dispatched to FlexSessionAttributeListeners or FlexSessionBindingListeners. To correct this, register flex.messaging.HttpFle
xSession as a listener in web.xml.

However i have the following tag in my web.xml. Also iam not getting my index.html when i hit the application, what iam getting is 404 error

<listener>
<listener-class>flex.messaging.HttpFlexSession</listener-class>
</listener>