C# .net中cookie值为中文时的乱码解决方法

一.cookie的名称或子cookie的名称不能为中文,否则无法获得cookie

这个好办,名称不用中文即可

二.cookie的值为中文时候,取cookie的值会出现乱码

解决办法:存取cookie时候先解码和编码

存cookie,进行编码:

cookie.Value = HttpUtility.UrlEncode("上海");

取cookie时候,进行解码:

cookieValue = HttpUtility.UrlDecode(cookie.Value);

另外注意:

取子cookie时候,应该先解码,再根据%号分解,才能取到子cookie的值.

写Cookie里，一定要加上UrlEncode,用Request读Cookie时，一定要加上UrlDecode

示例如下：

protected void Page_Load(object sender, EventArgs e)

     {

         HttpCookie GoodList = null;

         //如果GoodList不为空，则GOODID+1,GoodsName加"乐无烟"

         if (Request.Cookies["GoodList"] != null)

         {

             GoodList = Request.Cookies["GoodList"];

             GoodList.Values["GoodsID"] = Server.UrlEncode(Server.UrlDecode(Request.Cookies["GoodList"]["GoodsID"]) + ",1");

             GoodList.Values["GoodsName"] = Server.UrlEncode(Server.UrlDecode(Request.Cookies["GoodList"]["GoodsName"]) + ",乐无烟");

             GoodList.Expires = DateTime.Now.AddDays(1);

             Response.Cookies.Add(GoodList);

         }

         else

             //初次写入Cookie

             GoodList = new HttpCookie("GoodList");

             GoodList.Values["GoodsID"] = Server.UrlEncode("2");

             GoodList.Values["GoodsName"] = Server.UrlEncode("无烟锅");

         Response.Write(Server.UrlDecode(Request.Cookies["GoodList"]["GoodsID"]) + "<br/>");

         Response.Write(Server.UrlDecode(Request.Cookies["GoodList"]["GoodsName"]) + "<hr/>");

}

中文cookie的问题，

在Windows 2000正常，

在Windows 2003 sp1下会偶尔出现乱码(遇到双字节特殊字符时候，例子：「`蹆绌 )，

在windows 2003 SP2下基本乱码

解决办法：

采用

Server.UrlEncode();

Server.UrlDecode();

Cookie["MyCookie"] = Server.UrlEncode("中文")

Response.Write(Server.UrlDecode(Request.Cookies("MyCookie").Value()))

编码和解码。

另外编码和解码要一致

System.Web.HttpUtility.UrlDecode 和 System.Web.HttpUtility.UrlEncode

System.Web.HttpContext.Current.Server.UrlDecode 和 System.Web.HttpContext.Current.Server.UrlEncode