关于后台生成验证码后，在前台获取cookie的方法

来源：互联网发布：中日战略互惠关系知乎编辑：程序博客网时间：2024/06/06 03:29

//前台通过js处理，获取后台设置的cookie

       //验证验证码是否正确        var checkCode = "";        var cooks = document.cookie.split(";");        for (var i = 0; i < cooks.length; i++) {            var index = cooks[i].indexOf("CheckCode");            if (index > -1) {                checkCode = cooks[i].split("=")[1];            }        }

后台，可以生成简单的4字符的验证码

{            StringBuilder checkCode = new StringBuilder();            Random random = new Random();            char[] letter =   {           '0','1','2','3','4','5','6','7','8','9',          'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z',           'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z'           };            for (int i = 0; i < 4; i++)            {                int RandKey = random.Next(0, 20);                checkCode.Append(letter[RandKey]);            }            //string str = System.Text.Encoding.UTF8.GetString(System.Text.Encoding.Default.GetBytes(checkCode.ToString()));            //HttpCookie h = new HttpCookie("CheckCode", str);            string str = HttpUtility.UrlEncode(checkCode.ToString());            Response.Cookies.Add(new HttpCookie("CheckCode", str));            return checkCode.ToString();        }

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