解决cookie 不能存中文的方案
cookie 不支持中文
解决方案非常容易 只需将其UrlEncode 一下即可，读取的时候要UrlDecode 方便起见，来个CookieHelper 类来操作
using System;
using System.Collections.Generic;
using System.Web;
using System.Web.UI;
namespace Sheb.Common
{
public class CookieHelper
{
/// <summary>
/// 增加一个cookie 记录
/// </summary>
/// <param name="cookie"></param>
public static void AddCookie(HttpCookie cookie)
{
DateTime dtNow = System.DateTime.Now;
DateTime CookieExpries = cookie.Expires;
TimeSpan span= CookieExpries - dtNow;
cookie.Value = HttpUtility.UrlEncode(cookie.Value);
if (span.TotalDays < 0)
{
cookie.Expires = dtNow.AddDays(1);
}
HttpContext.Current.Response.Cookies.Add(cookie);
}
/// <summary>
/// 判断是否有cookie
/// </summary>
/// <param name="cookieName"></param>
/// <returns></returns>
public static bool HasCookie(string cookieName)
{
HttpCookie cookie = HttpContext.Current.Request.Cookies[cookieName];
if (cookie == null ||
(cookie.Expires < System.DateTime.Now) && cookie.Expires != System.DateTime.MinValue)
{
return false;
}
else
{
return true;
}
}
/// <summary>
/// 删除一个cookie
/// </summary>
/// <param name="cookieName"></param>
public static void DelCookie(string cookieName)
{
if (HttpContext.Current.Request.Cookies[cookieName] != null)
{
HttpCookie cookie = HttpContext.Current.Request.Cookies[cookieName];
cookie.Expires = System.DateTime.Now.AddDays(1);
HttpContext.Current.Response.Cookies.Add(cookie);
}
}
/// <summary>
/// 获得cookie 的值
/// </summary>
/// <param name="cookieName"></param>
/// <returns></returns>
public static string GetCookieValue(string cookieName)
{
if (HasCookie(cookieName))
{
return HttpUtility.UrlDecode(HttpContext.Current.Request.Cookies[cookieName].Value);
}
else
{
return "";
}
}
}
}