springmvc 获取 request 和 response

SpringMVC 中在任意地方取得 HttpServletRequest 和 HttpServletResponse

1. 在 web.xml 中注册 RequestContextListener (SpringMVC 4 不需要这一步)

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

2. 获取 HttpServletRequest 和 HttpServletResponse

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   public static String () { HttpServletRequest request = ((ServletRequestAttributes) RequestContextHolder.getRequestAttributes()).getRequest(); HttpServletResponse response = ((ServletRequestAttributes) RequestContextHolder.getRequestAttributes()).getResponse(); return request.getParameter("name"); }