我正在尝试以编程方式将用户添加到ASP.NET MVC身份。
我遇到的错误是:UserManager threw an exception of type 'System.NullReferenceException'
此功能是通过不源自此站点的POST调用的。它位于AccountController中public async Task<ActionResult> Register(RegisterViewModel model)
的正下方。
[AllowAnonymous]
public async Task<bool> GenerateUser(string email)
{
var user = new ApplicationUser { UserName = email, Email = email };
string password = System.Web.Security.Membership.GeneratePassword(12, 4);
var result = await UserManager.CreateAsync(user, password);
if (result.Succeeded)
{
// Omitted
}
else { AddErrors(result); }
return true;
}
我也试图使用下面的代码执行相同的操作,但是我得到一个错误,即用户名中不能包含特殊字符(我使用的是电子邮件地址),但是绝对可以这样做,因为我所有的用户都是使用public async Task<ActionResult> Register(RegisterViewModel model)
创建的。
string password = System.Web.Security.Membership.GeneratePassword(12, 4);
var store = new Microsoft.AspNet.Identity.EntityFramework.UserStore<ApplicationUser>();
var manager = new ApplicationUserManager(store);
var user = new ApplicationUser() { Email = email, UserName = email };
var result = manager.Create(user, password);
用户对象与我填写表单以在网站上创建新用户(使用public async Task<ActionResult> Register(RegisterViewModel model)
)相同,并且密码只是一个字符串,也相同。
public async Task<ActionResult> Register(RegisterViewModel model)
是根据脚手架的默认设置,但无论如何这里还是在下面供参考:
// POST: /Account/Register
[HttpPost]
[AllowAnonymous]
[ValidateAntiForgeryToken]
public async Task<ActionResult> Register(RegisterViewModel model)
{
if (ModelState.IsValid)
{
var user = new ApplicationUser { UserName = model.Email, Email = model.Email };
var result = await UserManager.CreateAsync(user, model.Password);
if (result.Succeeded)
{
//await SignInManager.SignInAsync(user, isPersistent:false, rememberBrowser:false);
// For more information on how to enable account confirmation and password reset please visit https://go.microsoft.com/fwlink/?LinkID=320771
// Send an email with this link
string code = await UserManager.GenerateEmailConfirmationTokenAsync(user.Id);
var callbackUrl = Url.Action("ConfirmEmail", "Account", new { userId = user.Id, code = code }, protocol: Request.Url.Scheme);
await UserManager.SendEmailAsync(user.Id, "Confirm your account", "Please confirm your account by clicking <a href=\"" + callbackUrl + "\">here</a>");
//return RedirectToAction("Index", "Home");
// TODO: Email Sent
return View("ConfirmationSent");
}
AddErrors(result);
}
// If we got this far, something failed, redisplay form
return View(model);
}
编辑:
我通过以下方式调用函数:
var result = new AccountController().GenerateUser(model.emailAddress);
Edit2:
根据要求:这是ApplicationUserManager
public static ApplicationUserManager Create(IdentityFactoryOptions<ApplicationUserManager> options, IOwinContext context)
{
var manager = new ApplicationUserManager(new UserStore<ApplicationUser>(context.Get<ApplicationDbContext>()));
// Configure validation logic for usernames
manager.UserValidator = new UserValidator<ApplicationUser>(manager)
{
AllowOnlyAlphanumericUserNames = false,
RequireUniqueEmail = true
};
// Configure validation logic for passwords
manager.PasswordValidator = new PasswordValidator
{
RequiredLength = 8,
RequireNonLetterOrDigit = false,
RequireDigit = false,
RequireLowercase = false,
RequireUppercase = false,
};
// Configure user lockout defaults
manager.UserLockoutEnabledByDefault = true;
manager.DefaultAccountLockoutTimeSpan = TimeSpan.FromMinutes(5);
manager.MaxFailedAccessAttemptsBeforeLockout = 5;
// Register two factor authentication providers. This application uses Phone and Emails as a step of receiving a code for verifying the user
// You can write your own provider and plug it in here.
manager.RegisterTwoFactorProvider("Phone Code", new PhoneNumberTokenProvider<ApplicationUser>
{
MessageFormat = "Your security code is {0}"
});
manager.RegisterTwoFactorProvider("Email Code", new EmailTokenProvider<ApplicationUser>
{
Subject = "Security Code",
BodyFormat = "Your security code is {0}"
});
manager.EmailService = new EmailService();
manager.SmsService = new SmsService();
var dataProtectionProvider = options.DataProtectionProvider;
if (dataProtectionProvider != null)
{
manager.UserTokenProvider =
new DataProtectorTokenProvider<ApplicationUser>(dataProtectionProvider.Create("ASP.NET Identity"));
}
return manager;
}
}
答案 0 :(得分:0)
问题出在UserManager上,这解决了问题。
ApplicationDbContext context = new ApplicationDbContext();
var roleManager = new RoleManager<IdentityRole>(new RoleStore<IdentityRole>(context));
var UserManager = new UserManager<ApplicationUser>(new UserStore<ApplicationUser>(context));
UserManager.UserValidator = new UserValidator<ApplicationUser>(UserManager)
{
AllowOnlyAlphanumericUserNames = false,
RequireUniqueEmail = true
};
string password = System.Web.Security.Membership.GeneratePassword(12, 4);
var user = new ApplicationUser();
user.Email = model.Email;
user.UserName = model.Email;
string userPWD = password;
var result = UserManager.Create(user, userPWD);