Question

我正在为客户开发登录和用户数据库系统。我遇到的问题是，我正在尝试注册用户设备，以试图限制给定用户在一个月内可以使用的多恶意设备。这一切都工作得很好，但我在客户端计算机上保存的cookie存在问题。

即使我设置了expiredate，如下面的代码所示，Internet Explorer也会在会话结束时删除cookie。它在Chrome中运行得很好。设置cookie代码：

                cookie = new HttpCookie("DeviceLog");
                cookie.Expires = DateTime.Now.AddDays(30);
                cookie.Values.Add("DeviceId", guid.ToString());
                Response.Cookies.Add(cookie);

回复cookie代码：

                HttpCookie cookie = Request.Cookies["DeviceLog"];

我承认我对cookie的了解是限制性的，所以它是相当客观的，但是我已经能够解决它，即使在Google上花了一个小时后：p

更新，整个Cookie代码段：

        protected void Page_Load(object sender, EventArgs e) {
        if (User.Identity.IsAuthenticated) {
            Response.Redirect(STSUtility.GetRefereUrl(true));
        }
        if (!IsPostBack) {
            try {
                if (Request.Cookies["UserName"] != null && Request.Cookies["Password"] != null) {
                    username.Text = Request.Cookies["UserName"].Value;
                    password.Attributes["value"] = AESEncrypter.Decrypt(Request.Cookies["Password"].Value);
                    remember.Checked = true;
                }
            } catch (Exception) {
                Response.Cookies["UserName"].Expires = DateTime.Now.AddDays(-1);
                Response.Cookies["Password"].Expires = DateTime.Now.AddDays(-1);
            }
        }
    }

    protected void btnLogin_Click(object sender, EventArgs e) {
        if (remember.Checked) {
            Response.Cookies["UserName"].Expires = DateTime.Now.AddDays(30);
            Response.Cookies["Password"].Expires = DateTime.Now.AddDays(30);
        } else {
            Response.Cookies["UserName"].Expires = DateTime.Now.AddDays(-1);
            Response.Cookies["Password"].Expires = DateTime.Now.AddDays(-1);

        }
        Response.Cookies["UserName"].Value = username.Text.Trim();
        Response.Cookies["Password"].Value = AESEncrypter.EncryptToken(password.Text.Trim());

        MembershipProvider mp = new MembershipProvider();
        bool userValidated = mp.ValidateUser(username.Text, password.Text);

        if (userValidated && Page.IsValid) {
            HttpCookie cookie = Request.Cookies["DeviceLog"];
            ContextDataContext model = new ContextDataContext();
            User user = model.Users.First(x => x.Email == username.Text.Trim());

            Session["UserId"] = user.Id.ToString();
            int userDevices = model.UserDevicesLogs.Count(x => x.UserId == user.Id);

            if (!user.Active) {
                return;
            }

            if (userDevices >= maxDeviceLoginsPrUser && cookie == null) {
                Response.Redirect("/Sites/Login/ExceedMaxDevices.aspx");
            }

            if (cookie == null) {//Hvis device ikke har en cookie
                Guid guid = Guid.NewGuid();

                cookie = new HttpCookie("DeviceLog");

                cookie.Expires = DateTime.Now.AddDays(30);
                cookie.Values.Add("DeviceId", guid.ToString());
                Response.Cookies.Add(cookie);

                model.UserDevicesLogs.InsertOnSubmit(new UserDevicesLog {
                    Id = Guid.NewGuid(),
                    UserId = user.Id,
                    DeviceId = guid,
                    LastLoginFromDevice = DateTime.Now
                });
            } else {//Hvis device har en cookie
                Guid deviceId;
                Guid.TryParse(cookie.Values["DeviceId"], out deviceId);

                UserDevicesLog deviceLog = model.UserDevicesLogs.FirstOrDefault(x => x.UserId == user.Id && x.DeviceId == deviceId);

                if (deviceLog == null) {
                    model.UserDevicesLogs.InsertOnSubmit(new UserDevicesLog {
                        Id = Guid.NewGuid(),
                        DeviceId = deviceId,
                        UserId = user.Id,
                        LastLoginFromDevice = DateTime.Now
                    });
                } else {
                    deviceLog.LastLoginFromDevice = DateTime.Now;
                }
                Response.Cookies.Add(cookie);
            }

            model.SubmitChanges();

            FormsAuthentication.SetAuthCookie(username.Text, remember.Checked);
            if (String.IsNullOrEmpty(Request.QueryString["ReturnUrl"])) {
                Response.Redirect(STSUtility.GetRefereUrl(true));
            } else {
                FormsAuthentication.RedirectFromLoginPage(user.Email, remember.Checked);
            }

        }
    }

只有DeviceLog cookie才能解决这个问题......

Answer 1

好的，我自己解决了这个问题，最后......

我有Response.Cookies.Add（cookie）;代码中的twise，这是原因。不知道为什么这是一个问题，因为它是相同的cookie添加twise，并且是...愚蠢的愚蠢我知道愚蠢:)感谢sudgestions，我很高兴终于有这个解决：）

饼干消失

1 个答案: