Spring获取HttpServletRequest对象

<!-- WEB.XML中配置相关的监听机制 --> 

<listener>  

    <listener-class> 

        org.springframework.web.context.request.RequestContextListener  

    </listener-class> 

</listener>  

 //在任意的class下通过以下方法获取到HttpServletRequest

 HttpServletRequest request = ((ServletRequestAttributes)RequestContextHolder.getRequestAttributes()).getRequest();