Java web services integration in existing applications
i have been looking at various solutions to implement web services in java.  
What I am looking for is a solution that is easy to integrate in existing web applications.  
I have an web applications for which i would like to offer certain functionalities as web services (also provide security, access restriction etc.).  
I have been looking at CXF, Axis2, Metro, but have not found a lot of useful information on using in existing apps.  
What would be a good solution in my case?  
Thanks a lot for all your advice/suggestions.
Java web services integration in existing applications
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i have been looking at various solutions to implement web services in java.  
What I am looking for is a solution that is easy to integrate in existing web applications.  
I have an web applications for which i would like to offer certain functionalities as web services (also provide security, access restriction etc.).  
I have been looking at CXF, Axis2, Metro, but have not found a lot of useful information on using in existing apps.  
What would be a good solution in my case?  
Thanks a lot for all your advice/suggestions.