MVC中Cookies的简单读写操作

最新推荐文章于 2020-08-18 08:10:57 发布

转载最新推荐文章于 2020-08-18 08:10:57 发布 · 1.1k 阅读

.NET 专栏收录该内容

30 篇文章

订阅专栏

本文详细介绍了在ASP.NET中如何使用Cookies进行数据存储和读取。包括如何创建和设置Cookies，读取Cookies中的信息，以及如何清除Cookies。通过具体的代码示例，展示了Cookies在实际应用中的使用方法。

1.写入

复制代码

public static void WriteCookie(string cn, string cv, DateTime Time)
{
    HttpCookie cookie = new HttpCookie(cn) {
        Value = HttpUtility.UrlEncode(cv, Encoding.GetEncoding("GB2312")),
        Expires = Time
    };
    HttpContext.Current.Response.Cookies.Add(cookie);
}

复制代码

2.读取

复制代码

public static string ReadCookie(string cn)
{
    string str = "";
    try
    {
        if (IsCookies)
        {
            HttpCookie cookie = HttpContext.Current.Request.Cookies[cn];
            return HttpUtility.UrlDecode(cookie.Value, Encoding.GetEncoding("GB2312"));
        }
        str = ReadSession(cn);
    }
    catch
    {
    }
    return str;
}

 

 
  public static string ReadCookie(string cn)
{
    string str = "";
    try
    {
        if (IsCookies)
        {
            HttpCookie cookie = HttpContext.Current.Request.Cookies[cn];
            return HttpUtility.UrlDecode(cookie.Value, Encoding.GetEncoding("GB2312"));
        }
        str = ReadSession(cn);
    }
    catch
    {
    }
    return str;
}

复制代码

3.自己写的测试

复制代码

 [HttpPost]
        public ActionResult Login()
        {
            //写入cookies方式1
            HttpCookie cookie = new HttpCookie("tempToken");
            cookie.Value = "123456";
            cookie.Expires = DateTime.Now.AddDays(7);
            Response.Cookies.Add(cookie);

            //写入cookies方式2
            Response.Cookies["tempToken"].Value = "123456";
            Response.Cookies["tempToken"].Expires = DateTime.Now.AddDays(7);
            return Json(new { message="cookie设置成功"});
        }

        [HttpPost]
        public ActionResult GainCookie()
        {
            //读取cookies
            string cook="";
            if (Request.Cookies["tempToken"]!=null)
            {
                cook = Request.Cookies["tempToken"].Value;
            }
            return Json(new { message=cook});
        }

        [HttpPost]
        public ActionResult ClearCookie()
        {
            //清除cookies
            Response.Cookies["tempToken"].Expires = DateTime.Now.AddDays(-1);
            return Json(new { message="清除成功"});
        }

复制代码