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我正在尝试在我的登录表单中实现“记住我”功能。我使用 ASP.NET MVC 作为我的 Web 应用程序。我设法让 cookie 工作,但我未能自动登录用户,以防他/她之前检查了记住我复选框。我知道问题是什么,但我不知道如何解决它。

在我的 HomeController 中,我有以下内容:

private LoginViewModel CheckLoginCookie()
{
    if (!string.IsNullOrEmpty(_appCookies.Email) && !string.IsNullOrEmpty(_appCookies.Password))
    {
        var login = new LoginViewModel
                        {
                            Email = _appCookies.Email,
                            Password = _appCookies.Password
                        };

        return login;
    }
    return null;
}


public ActionResult Index()
{
    var login = CheckLoginCookie();
    if (login != null)
        return RedirectToAction("Login", "User", login);

    var viewModel = new HomeIndexViewModel
                        {
                            IntroText =
                                "Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum.",
                            LastMinuteDeals = new List<ItemsIndexViewModel>(),
                            TrustedDeals = new List<ItemsIndexViewModel>()
                        };
    return View(viewModel);
}

在我的 UserController 中,我有 Login 操作方法:

public ActionResult Login()
{
    return PartialView(new LoginViewModel());
}

[HttpPost]
public ActionResult Login(LoginViewModel dto)
{
    bool flag = false;
    if (ModelState.IsValid)
    {
        if (_userService.AuthenticateUser(dto.Email, dto.Password, false)) {
            var user = _userService.GetUserByEmail(dto.Email);
            var uSession = new UserSession
            {
                ID = user.Id,
                Nickname = user.Nickname
            };
            SessionManager.RegisterSession(SessionKeys.User, uSession);
            flag = true;

            if(dto.RememberMe)
            {
                _appCookies.Email = dto.Email;
                _appCookies.Password = dto.Password;
            }
        }
    }
    if (flag)
        return RedirectToAction("Index", "Home");
    else
    {
        ViewData.Add("InvalidLogin", "The login info you provided were incorrect.");
        return View(dto);
    }
}

所以基本上,我想我会做的是从主控制器上的索引操作结果重定向用户,以防有登录 cookie。但问题是 RedirectToAction 将触发 GET 登录操作方法,而不是负责登录用户的 POST。

我在这件事上完全错了吗?或者有什么方法可以使用 RedirectToAction 或任何其他方式调用 POST Login 方法?

4

1 回答 1

60

首先,您永远不应该将用户的凭据存储在 cookie 中。这是令人难以置信的不安全。密码将随每个请求一起传递,并以纯文本形式存储在用户的机器上。

其次,不要重新发明轮子,尤其是在涉及安全性时,你永远不会做对。

ASP.Net 已经通过表单身份验证和成员资格提供程序安全地提供了此功能。你应该看看那个。创建默认 MVC 项目将包括基本身份验证设置。官方MVC 网站有更多。

更新

您仍然可以在不实现成员资格提供程序的情况下使用 .NET 表单身份验证。在基本层面上,它会像这样工作。

您在 web.config 中启用表单身份验证

<authentication mode="Forms">
  <forms loginUrl="~/Account/Login" timeout="2880" />
</authentication>

[Authorize]您可以使用该属性来装饰您想要保护的操作或控制器。

[Authorize]
public ViewResult Index() {
  //you action logic here
}

然后创建一个基本的登录动作

[HttpPost]
public ActionResult Login(LoginViewModel dto) {

  //you authorisation logic here
  if (userAutherised) {
    //create the authentication ticket
    var authTicket = new FormsAuthenticationTicket(
      1,
      userId,  //user id
      DateTime.Now,
      DateTime.Now.AddMinutes(20),  // expiry
      rememberMe,  //true to remember
      "", //roles 
      "/"
    );

    //encrypt the ticket and add it to a cookie
    HttpCookie cookie = new HttpCookie(FormsAuthentication.FormsCookieName,   FormsAuthentication.Encrypt(authTicket));
    Response.Cookies.Add(cookie);

    return RedirectToAction("Index");

  }

}
于 2011-04-11T10:34:14.170 回答