What's order in web container for starting up?

[Grace Yang]

I have listeners, filters, servlets defined in web.xml and I'd like to know what's the order for instantiatons?


Is the order starting from listener--> filter-->servlet correct?

(I have print statement in my ContextInitializedI(), so I know each time when I modified web.xml , it output the statment in console,..)

anybody can help me ?

Thanks

[Tiffiny Yang]

listener--> filter-->servlet

any idea?

[Grace Yang]

any suggestion, any body knows?

Thanks

[Joe San]

Good question. Even I'm interested in getting to know this!

[Ulf Dittmer]

The answer to this can be determined simply by putting print statements into all those classes, can it not?

[Mohit Chadha]

As Per SRV 9.12 of Servlet Specification,

When a web application is deployed into a container, the following steps must be performed, in this order, before the web application begins processing client requests.

1. Instantiate an instance of each event listener identified by a <listener> element in the deployment descriptor.

2. For instantiated listener instances that implement ServletContextListener, call the contextInitialized() method.

3. Instantiate an instance of each filter identified by a <filter> element in the deployment descriptor and call each filter instance�s init() method.

4. Instantiate an instance of each servlet identified by a <servlet> element that includes a <load-on-startup> element in the order defined by the load-onstartup element values, and call each servlet instance�s init() method.

I hope this answers your question.

[nitin pai]

Remember LCFS

LCFS means Listener -> ServletContextListener -> Filters -> Servlets

[Grace Yang]

Got it.

Thank you all of you!!!