Asp.NET Identity 2提供“无效令牌”错误

我正在使用Asp.Net-Identity-2，并且尝试使用以下方法来验证电子邮件验证代码。但是我收到“无效令牌”错误消息。

• 我的应用程序的用户管理器是这样的：

  public class AppUserManager : UserManager<AppUser>
  {
      public AppUserManager(IUserStore<AppUser> store) : base(store) { }
  
      public static AppUserManager Create(IdentityFactoryOptions<AppUserManager> options, IOwinContext context)
      {
          AppIdentityDbContext db = context.Get<AppIdentityDbContext>();
          AppUserManager manager = new AppUserManager(new UserStore<AppUser>(db));
  
          manager.PasswordValidator = new PasswordValidator { 
              RequiredLength = 6,
              RequireNonLetterOrDigit = false,
              RequireDigit = false,
              RequireLowercase = true,
              RequireUppercase = true
          };
  
          manager.UserValidator = new UserValidator<AppUser>(manager)
          {
              AllowOnlyAlphanumericUserNames = true,
              RequireUniqueEmail = true
          };
  
          var dataProtectionProvider = options.DataProtectionProvider;
  
          //token life span is 3 hours
          if (dataProtectionProvider != null)
          {
              manager.UserTokenProvider =
                 new DataProtectorTokenProvider<AppUser>
                    (dataProtectionProvider.Create("ConfirmationToken"))
                 {
                     TokenLifespan = TimeSpan.FromHours(3)
                 };
          }
  
          manager.EmailService = new EmailService();
  
          return manager;
      } //Create
    } //class
  } //namespace
  

• 我生成令牌的操作是（即使我在此处检查令牌，也会收到“无效令牌”消息）：

  [AllowAnonymous]
  [HttpPost]
  [ValidateAntiForgeryToken]
  public ActionResult ForgotPassword(string email)
  {
      if (ModelState.IsValid)
      {
          AppUser user = UserManager.FindByEmail(email);
          if (user == null || !(UserManager.IsEmailConfirmed(user.Id)))
          {
              // Returning without warning anything wrong...
              return View("../Home/Index");
  
          } //if
  
          string code = UserManager.GeneratePasswordResetToken(user.Id);
          string callbackUrl = Url.Action("ResetPassword", "Admin", new { Id = user.Id, code = HttpUtility.UrlEncode(code) }, protocol: Request.Url.Scheme);
  
          UserManager.SendEmail(user.Id, "Reset password Link", "Use the following  link to reset your password: <a href=\"" + callbackUrl + "\">link</a>");
  
          //This 2 lines I use tho debugger propose. The result is: "Invalid token" (???)
          IdentityResult result;
          result = UserManager.ConfirmEmail(user.Id, code);
      }
  
      // If we got this far, something failed, redisplay form
      return View();
  
  } //ForgotPassword
  

• 我检查令牌的操作是（这里，当我检查结果时，我总是得到“无效令牌”）：

  [AllowAnonymous]
  public async Task<ActionResult> ResetPassword(string id, string code)
  {
  
      if (id == null || code == null)
      {
          return View("Error", new string[] { "Invalid params to reset password." });
      }
  
      IdentityResult result;
  
      try
      {
          result = await UserManager.ConfirmEmailAsync(id, code);
      }
      catch (InvalidOperationException ioe)
      {
          // ConfirmEmailAsync throws when the id is not found.
          return View("Error", new string[] { "Error to reset password:<br/><br/><li>" + ioe.Message + "</li>" });
      }
  
      if (result.Succeeded)
      {
          AppUser objUser = await UserManager.FindByIdAsync(id);
          ResetPasswordModel model = new ResetPasswordModel();
  
          model.Id = objUser.Id;
          model.Name = objUser.UserName;
          model.Email = objUser.Email;
  
          return View(model);
      }
  
      // If we got this far, something failed.
      string strErrorMsg = "";
      foreach(string strError in result.Errors)
      {
          strErrorMsg += "<li>" + strError + "</li>";
      } //foreach
  
      return View("Error", new string[] { strErrorMsg });
  
  } //ForgotPasswordConfirmation
  

我不知道可能遗漏了什么或出了什么问题...