How to get web session on Spring AOP

I have a question for using Spring AspectJ. I want to create an audit log when the user does som开发者_运维问答ething and get user information from web session to create the audit log. Can anyone provide examples of how to do this?

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Spring MVC's DispatcherServlet stores request in a thread-local variable (if you don't use Spring MVC, you may declare RequestContextListener in web.xml to do the same thing). This variable can be accessed via RequestContextHolder:

HttpSession s = (HttpSession) RequestContextHolder
                    .currentRequestAttributes()
                    .resolveReference(RequestAttributes.REFERENCE_SESSION);