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From David Delbecq <de...@oma.be>
Subject Re: classloader during tomcat startup
Date Wed, 19 Oct 2005 09:14:06 GMT
Robert Graf-Waczenski a écrit :

>>SRV.14.2.12    ServletContextListener
>>  public interface ServletContextListener extends
>>  java.util.EventListener
>>  All Superinterfaces: java.util.EventListener
>>  Implementations of this interface receive notifications about changes
>>to the serv-
>>  let context of the web application they are part of. To receive
>>notification events,
>>  the implementation class must be configured in the deployment
>>descriptor for the
>>  web application.
>>  Since: v 2.3
>>  See Also: ServletContextEvent
>>    
>>
>
>Correct. My mistake. And my own listener classes are indeed
>registered in my web.xml(s) since the beginning, forgot this ;-)
>So my point of not having to configure it in web.xml is moot.
>
>  
>
>>Last but not least, using a Servlet has the additional 
>>advantage it can
>>be easily configured
>>if needed without ressorting to an additionnal config file in 
>>the classpath.
>>    
>>
>
>I don't see what you are trying to say here. What additional
>config file in the classpath are you talking about? (I'm not
>trying to offend you, i'm only asking for clarification.)
>
>  
>
Just pointing out if he needs some configuration parameters for his static
block, he can use the <param> sections of the servlet config.
If you use the listener class and need some configuration, you need
to somehow read it from a file as there is not equivalent
section.

>My main problem with the servlet approach is that a servlet
>has a doGet() method and is therefore supposed to serve
>web requests, which is not needed in an init class.
>(Agreed, this is not a major problem, but i like to keep
>things as small and simple as possible, and a class that
>*can* serve web requests should also actually be used for
>this purpose.)
>  
>
Agree on that point, though i most of the time simply don't care :)

>Robert
>
>  
>
>>Robert Graf-Waczenski a écrit :
>>
>>    
>>
>>>Using the load-on-startup mechanism was the way to go with older
>>>servlet APIs. Nowadays, with servlet API 2.4, having a class
>>>implement the ServletContextListener interface is better in my eyes.
>>>      
>>>
>
>
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>  
>


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