1.第一种方法
ActionContext ctx = ActionContext.getContext(); HttpServletRequest request = (HttpServletRequest)ctx.get(ServletActionContext.HTTP_REQUEST); HttpServletResponse response = (HttpServletResponse)ctx.get(ServletActionContext.HTTP_RESPONSE)
2.第二种方法,action实现ServletRequestAware
参考:http://developer.51cto.com/art/200902/108249.htm