ASP.NET MVC3 实现全站重定向的简单方法

protected void Application_BeginRequest(object sender, EventArgs e)
        {
            string strUrl = Request.Url.ToString().Trim().ToLower();
            if (strUrl.Contains("https://atool.online"))
            {
                Response.RedirectPermanent(strUrl.Replace("https://atool.online", "https://www.atool.online"));
            }
        }