二级域名如何写cookie

二级域名如何写cookie

主站：www.zzm.com
子站:shop.zzm.com
<appSettings>
    <add key="EJJJCookieDomainName" value="zzm.com"/>
</appSettings>

两个项目下的web.config都写入这个节点

写cookie的时候读取此节点的value，把cookie写在此域名下。二级域名也就写进cookie了。

 #region 写登录Cookie
        public static int WriteCookie(string UserID, string UserName,string UserType,bool remember)
        {
            HttpCookie userCookie = new HttpCookie("Deco");
            userCookie.Domain = System.Configuration.ConfigurationManager.AppSettings["EJJJCookieDomainName"].ToString();
            userCookie.HttpOnly = true;
            if(remember)
            {
                userCookie.Expires = DateTime.Now.AddYears(1);
            }
            userCookie["DecoUName"] = HttpUtility.UrlEncode(UserName);
            userCookie["DecoUID"] = UserID;
            userCookie["DecoUType"] = UserType;  
            HttpContext.Current.Response.ContentEncoding = System.Text.Encoding.GetEncoding("utf-8");
            HttpContext.Current.Response.Cookies.Remove("Deco");
            HttpContext.Current.Response.Cookies.Add(userCookie);
            return 1;

        }
        #endregion