cookie 为什么设置了过期时间不起作用浏览器关闭 cookie 就没了

来源：互联网发布：国家统计局房地产数据编辑：程序博客网时间：2024/06/02 11:22

刚开始用火狐测试，设置后马上读取可以读取到cookie 关闭浏览器之后cookie 就没了

在ie 等其它浏览器可以正常读取，只有火狐不行

1：因为我的火狐设置了不记录浏览历史记录，所以cookie关闭浏览器就失效了，无论你怎么在代码里设置时间都没用

解决方法工具-选项-隐私历史记录设置成记录历史记录

测试cookie

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm1.aspx.cs" Inherits="emptyWebApplication1.WebForm1" %>

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
        <div>
            <asp:Button runat="server" ID="test" Text="读取cookie" OnClick="Button1_Click" />
             <asp:Button runat="server" ID="Button1" Text="设置cookie" OnClick="Button2_Click" />
        </div>
    </form>
</body>
</html>

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

namespace emptyWebApplication1
{
    public partial class WebForm1 : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {

                if (Request.Cookies["MyCook"] != null && !string.IsNullOrEmpty(Request.Cookies["MyCook"].Value))
                {
                    Response.Write("IsPostBack"+Request.Cookies["MyCook"].Value); //输出为：userid=userid_value&userid2=userid2_value2
                }
                else
                {
                    Response.Write("IsPostBack没有mycook" ); //输出为：userid=userid_value&userid2=userid2_value2

                }
            }
        }

        //读取
        protected void Button1_Click(object sender, EventArgs e)
        {

            // HttpCookie cokie = new HttpCookie("MyCook");//初使化
            if (Request.Cookies["MyCook"] != null)
            {
                //Response.Write("Cookie中键值为userid的值:" + Request.Cookies["MyCook"]["userid"]);//整行
                //Response.Write("Cookie中键值为userid2的值" + Request.Cookies["MyCook"]["userid2"]);
                Response.Write(Request.Cookies["MyCook"].Value);//输出全部的值
            }
        }
        //读取
        protected void Button2_Click(object sender, EventArgs e)
        {

            HttpCookie cookie = new HttpCookie("MyCook");//初使化并设置Cookie的名称
            DateTime dt = DateTime.Now;
            cookie.Expires = DateTime.Now.AddDays(1); ;//设置过期时间
            cookie.Values.Add("userid", "userid_value");
            cookie.Values.Add("userid2", "userid2_value2");
            cookie.Path = "/";
            Response.Cookies.Add(cookie);
            ////输出该Cookie的所有内容
            //Response.Write(cookie.Value); //输出为：userid=userid_value&userid2=userid2_value2
        }
    }
}

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cookie 为什么设置了过期时间 不起作用 浏览器关闭 cookie 就没了

cookie 为什么设置了过期时间不起作用浏览器关闭 cookie 就没了