实现Cookie集合_.NET_编程开发_程序员俱乐部

以前Insus.NET有在博客上有写过一篇《在程序中使用Cookie集合》http://www.cnblogs.com/insus/archive/2011/05/25/2055531.html

昨天Insus.NET有在命名用这方法的专项中，进行改写与优化。

把Cookie类抽出并独立起来。

 private static HttpResponse Response
        {
            get
            {
                return HttpContext.Current.Response;
            }
        }

        private static HttpRequest Request
        {
            get
            {
                return HttpContext.Current.Request;
            }
        }

这个cookie集合，当然存取单独cookie也行才对：

 public static string GetCookie(string cookieName)
        {
            return Request.Cookies[cookieName] == null ? "" : Request.Cookies[cookieName].Value;
        }

        public static void SetCookie(string cookieName, string value)
        {
            Response.Cookies[cookieName].Value = value;
        }

        public static void RemoveCookie(string cookieName)
        {
            HttpCookie cookie = Request.Cookies[cookieName];
            cookie.Expires = DateTime.Now.AddTicks(-1);
            Response.Cookies.Add(cookie);
        }

下面是存储cookie集合，即是说单个cookie中，能够存储多个键值：

  private static Dictionary<string, object> GetCookies(string cookieName)
        {
            Dictionary<string, object> dic = new Dictionary<string, object>();

            if (Request.Cookies[cookieName] != null)
            {
                HttpCookie cookie = Request.Cookies[cookieName];
                if (cookie != null)
                {
                    NameValueCollection nvc = cookie.Values;
                    foreach (string key in nvc.AllKeys)
                    {
                        dic.Add(key, cookie[key]);
                    }
                }
            }
            return dic;
        }

        public static object GetCookies(string cookieName, string keyName)
        {
            Dictionary<string, object> dic = GetCookies(cookieName);
            if (dic.Count > 0 && dic.ContainsKey(keyName))
            {
                return dic[keyName];
            }

            return null;
        }

        public static void SetCookies(string cookieName, Dictionary<string, object> dic)
        {
            HttpCookie cookie = Request.Cookies[cookieName] == null ? new HttpCookie(cookieName) : Request.Cookies[cookieName];
            foreach (KeyValuePair<string, object> val in dic)
            {
                cookie[val.Key] = val.Value.ToString();
            }
            Response.Cookies.Add(cookie);
        }

        public static void RemoveCookies(string cookieName)
        {
            HttpCookie cookie = Request.Cookies[cookieName];
            cookie.Expires = DateTime.Now.AddTicks(-1);
            Response.AppendCookie(cookie);
        }

        public static void RemoveCookies(string cookieName, string keyName)
        {
            HttpCookie cookie = Request.Cookies[cookieName];
            if (cookie != null)
                cookie.Values.Remove(keyName);
            Response.AppendCookie(cookie);
        }

以上只是实现一个cookie类。真正在程序中，我们怎样去写cookie呢？也就是说如何使用。你可以写每一个cookie写成一个property，如下：



你可以写成任一个想实现的cookie。以上只是简单写2个属性，一个方法。

在网页中，就可以轻松使用：
赋值：
 InsusBase.SystemLoginOk = true;
InsusBase.SystemId = "Key001";


获取值：
 Response.Write(InsusBase.SystemLoginOk);
Response.Write(InsusBase.SystemId);