spring-mvc中RequestContextHolder.currentRequestAttributes()返回null提示java.lang.IllegalStateException: No thread-bound request found，,问题：在Spring M

spring-mvc中RequestContextHolder.currentRequestAttributes()返回null提示java.lang.IllegalStateException: No thread-bound request found，,问题：在Spring M

问题：

在Spring MVC项目中在web请求处理过程中使用ServletRequestAttributes srAttrs = (ServletRequestAttributes) RequestContextHolder.currentRequestAttributes();获得当前请求时出现如下异常信息：

Caused by: java.lang.IllegalStateException: No thread-bound request found:     Are you referring to request attributes outside of an actual web request,     or processing a request outside of the originally receiving thread?     If you are actually operating within a web request and still receive this message,     your code is probably running outside of DispatcherServlet/DispatcherPortlet:     In this case,         use RequestContextListener or RequestContextFilter to expose the current request.

要解决这个问题，需要在web.xml中配置org.springframework.web.context.request.RequestContextListener，如下配置：

<web-app ...>   <listener>    <listener-class>        org.springframework.web.context.request.RequestContextListener    </listener-class>   </listener></web-app>