code: private static void fillReqAndRes(ServletRequest req, ServletResponse res){
  		//-- 填充请求和响应对象到ActionContext本地线程
  		Request.init((HttpServletRequest)req);
  		Response.init((HttpServletResponse)res);
  	}
docs: 注入ServletRequst和ServletResponse
  @param req ServletRequest
  @param res ServletResponse