How do DWR work with Spring and Hibernate?

As advised by some of the experts, I am trying out DWR for my chat application.
I set up my chat application using Spring and hibernate in the backend, JSP and Javascrip for client. I am using DWR to ajax-style my chat application. I already set up my dwr configuration by following the steps outlined in http://javablogspace.blogspot.com/ for Spring,DWR and Hibernate.

In my client side, should i call my service classes directly. Any tips on how to set up the client ?

Please let me know.
Thanks
ranji_sundarAsked:
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darkappleConnect With a Mentor Commented:
Yes, now you'll directly call service classes. It will be like you are interacting with procedures of service classes and out of the way from MVC route of spring.

Your service class will query necessary data through DAO and you'll directly reply client with the data which is to be handled by your callback function.
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ranji_sundarAuthor Commented:
Thanks for your response. I set the classes to be exposed....but, when I checked the localhost:8080\Myprogram\dwr, it says Classes known to dwr is empty. Can you suggest me what might have been wrong?
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darkappleCommented:
it might be one of the cases

i. you missed to put dwr.jar in classpath
ii. you missed to mention dwr servlet description in web.xml
iii. you forgot to mention classes in dwr.xml file.
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