authentication - 使用身份验证的ASP.NET MVC 3

Question

如何使用FormsAuthentication保存内容？我不想通过URL存储UserId。
例如，现在我有以下代码:

//UserController class:
[HttpPost]
public ActionResult LogOn(LogOnModel model, string returnUrl)
{
if (ModelState.IsValid)
{
  if (repository.ValidateUser(model.Login, model.Password))
  {
    FormsAuthentication.SetAuthCookie(model.Login, model.RememberMe);
    if (Url.IsLocalUrl(returnUrl))
    {
      return Redirect(returnUrl);
    }
    else
    {
      return RedirectToAction("Project", "Index");
    }
  }
  else
  {
     ModelState.AddModelError("", "Incorrect name or password.");
  }
}

return View(model);
}

ProjectController类:

public ViewResult Index()
{
    return View(repository.GetUserProjects(
        this.ControllerContext.HttpContext.User.Identity.Name));
}

ProjectRepository:

ProjectsContext context = new ProjectsContext();
UsersContext uCnt = new UsersContext();

public IEnumerable<Project> GetUserProjects(String username)
{
    if (String.IsNullOrEmpty(username))
        throw new ArgumentNullException("username", "Login is empty");
    return this.uCnt.Users
               .FirstOrDefault(u => u.Login == username)
               .Projects
               .ToList();
}

ProjectController和ProjectRepository看起来不是很好的代码...也许有人可以提供建议，如何在不使用URL的情况下存储UserID？我认为，最好的方法是将ID保留在自动提升上。我没有在User.Identity中找到任何属性来执行此操作...
UPD
请原谅，但我忘了说我在Razor View 中使用MVC-3。
而且UserId不是字符串(User.Identity.Name是字符串)，它可能是GUID或我自己的对象...

Answer 1

用户登录时，将用户ID保存在授权cookie的FormsAuthentication票证的UserData属性中:

string userData = userID.ToString();

FormsAuthenticationTicket ticket = new FormsAuthenticationTicket(1, user.Email,
    DateTime.Now, DateTime.Now.AddMinutes(FormsAuthentication.Timeout.TotalMinutes),
    createPersistentCookie, userData);
string hashedTicket = FormsAuthentication.Encrypt(ticket);

HttpCookie cookie = new HttpCookie(FormsAuthentication.FormsCookieName, hashedTicket);
HttpContext.Current.Response.Cookies.Add(cookie);

您可以在Global.asax的PostAuthenticateRequest方法中读回它:

HttpCookie formsCookie = Request.Cookies[FormsAuthentication.FormsCookieName];

if (formsCookie != null)
{
    FormsAuthenticationTicket auth = FormsAuthentication.Decrypt(formsCookie.Value);

    Guid userID = new Guid(auth.UserData);

    var principal = new CustomPrincipal(Roles.Provider.Name, new GenericIdentity(auth.Name), userID);

    Context.User = Thread.CurrentPrincipal = principal;
}

请注意，在这种情况下，CustomPrincipal是从RolePrincipal派生的(尽管如果您不使用Roles，我认为您需要从GenericPrincipal派生)，并且只需添加UserID属性并重载构造函数即可。

现在，无论您在应用中需要UserID的什么地方，都可以执行以下操作:

if(HttpContext.Current.Request.IsAuthenticated)
    Guid userID = ((CustomPrincipal)HttpContext.Current.User).UserID;