我一直在使用Facebook登录为我的asp.net核心项目之一。但是，它突然停止为Facebook登录工作。我收到HTTP 500错误。Facebook登录在asp.net核心不工作，并返回500
的问题是，即使是在调试多，asp.net芯不提任何错误。它只是相同的500错误代码。没有其他的。
当我试图在第一行public async Task<IActionResult> ExternalLoginCallback(string returnUrl = null)函数中设置断点时，我意识到它甚至在此之前甚至没有触及那个并且失败。
我不知道如何进一步调试。我在这里错过了什么吗？或者登录方的FB有任何改变吗？
被打的返回网址是Facebook是：
https://localhost:44300/signin-facebook?code=AQBxGGw7ZCoa9xtXc3CCsVGRD9TJLL428bZ_eJpUu4CtVu3K4UrfOZuYYdwFBXzGZ6GOGXpOi2Nme_jfbewB84otVZhKZfs4i7Dhi9Y3E_rloU9ouLeIvuOsm29jr7IDCtTj_HM7rKuKjj3zmc4yz5i_fniZ9ZhMfXtSus5KyKa4EFkZTsmKrz2ngMlGQalUAob_52GJNhvSIXDlmiNSrZLJV3m7Zbkf9eXETQkqhu2L1kgXPvWkMzVP8EN00GwRCYB3xT1kQMOimDANRKhziZjoVS5QZFUJTP0Faj47tE1xNfmAzb30iuwcaRORCOTMipUrnRvOO4nGRo8JuUNdPJaO&state=CfDJ8EHIO3qHMHFClr5BAt4EC1Wj7LyAs5Pg1XOqKo4uFiJM2Jr1rNyooxLIu2fbXr6Z3X5_kqbF_7WwFfvF3L3H4xgyooo-3Y9BV8Zh1S5wXlLJDAyCT5_LwkPJ1j8Zrwx4umQJp6NOl76GwRXpi1_BHlWGRxnh_naTL35iqeGovOa8oEDC0jOQ4trRe7YG3fV_ptjWk4yOnvJnsI81O-6wfyhdc3jm-LTP7ZO7-duf_lPZXZ8mL42XyLXDTIyOJ__S2yLYdvwItdDVntsM8Hwq94goXdU-RaH7ZkDA8iAzeCl3Ke0tWAdYBKy9vooJIXmE9Q#_=_
根据这篇文章，应该在URL中有state_token了。但这似乎在这里不见了。我怎样才能弄清楚什么是实际的错误？
我使用的是asp.net核心RC2版本。
我的回调函数是：
public async Task<IActionResult> ExternalLoginCallback(string returnUrl = null)
{
var info = await _signInManager.GetExternalLoginInfoAsync();
if (info == null)
{
return RedirectToAction(nameof(Login));
}
// Sign in the user with this external login provider if the user already has a login.
var result = await _signInManager.ExternalLoginSignInAsync(info.LoginProvider, info.ProviderKey, isPersistent: false);
if (result.Succeeded)
{
_logger.LogInformation(5, "User logged in with {Name} provider.", info.LoginProvider);
return RedirectToLocal(returnUrl);
}
if (result.RequiresTwoFactor)
{
return RedirectToAction(nameof(SendCode), new { ReturnUrl = returnUrl });
}
if (result.IsLockedOut)
{
return View("Lockout");
}
else
{
// If the user does not have an account, then ask the user to create an account.
ViewData["ReturnUrl"] = returnUrl;
ViewData["LoginProvider"] = info.LoginProvider;
var email = info.ExternalPrincipal.FindFirstValue(ClaimTypes.Email);
if (email == null)
{
return View("Error");
}
/* Determine user from external login info */
var name = info.ExternalPrincipal.FindFirstValue(ClaimTypes.Name);
string firstName;
string lastName = "";
if (!string.IsNullOrWhiteSpace(name))
{
firstName = name.Split(' ').Length > 1? name.Split(new[] { ' ' }, 2)[0] : name;
lastName = name.Split(' ').Length > 1 ? name.Split(new[] { ' ' }, 2)[1] : "";
}
else
firstName = email.Split('@')[0];
var user = await _userManager.FindByEmailAsync(email);
if (user == null)
{
/* No user with same email ID. So, create a new user.*/
var newUser = new ApplicationUser
{
UserName = email,
Email = email,
FirstName = firstName,
LastName = lastName,
PasswordLastModifiedTime = DateTime.UtcNow,
UserSignUpDate = DateTime.UtcNow
};
var userCreationResult = await _userManager.CreateAsync(newUser);
if (userCreationResult.Succeeded)
{
userCreationResult = await _userManager.AddLoginAsync(newUser, info);
if (userCreationResult.Succeeded)
{
// Add user claims TODO:// Test if the claims are added successfully.
await _userManager.AddClaimAsync(newUser, new Claim("FirstName", newUser.FirstName));
await _userManager.AddClaimAsync(newUser, new Claim("LastName", newUser.LastName));
// Set user email to confirmed. This is more of work around
var code = await _userManager.GenerateEmailConfirmationTokenAsync(newUser);
userCreationResult = await _userManager.ConfirmEmailAsync(newUser, code);
if (userCreationResult.Succeeded)
{
//Create Subscription for user
var planService = new PlanServices();
var plan = planService.Find((int)SubscriptionType.Basic);
await _subscriptionService.CreateSubscription(newUser, plan, null);
await _signInManager.SignInAsync(newUser, isPersistent: false);
_logger.LogInformation(6, "User created an account using {Name} provider.",
info.LoginProvider);
await _emailSender.SendWelcomeEmailAsync(newUser.Email, newUser.FirstName);
return RedirectToLocal(returnUrl);
}
}
}
}
else
{
/* A user with email ID exists. Associate the account with that.*/
var loginAddResult = await _userManager.AddLoginAsync(user, info);
if (loginAddResult.Succeeded)
{
await _signInManager.SignInAsync(user, isPersistent: false);
return RedirectToLocal(returnUrl);
}
}
return View("ExternalLoginConfirmation", new ExternalLoginConfirmationViewModel { Email = email, FirstName = firstName, LastName = lastName});
}
}
而且ConfigureServices方法是：
public void ConfigureServices(IServiceCollection services)
{
// Add framework services.
services.AddApplicationInsightsTelemetry(Configuration);
services.AddScoped<ApplicationDbContext>();
services.AddIdentity<ApplicationUser, IdentityRole>(o =>
{
o.Password.RequireDigit = false;
o.Password.RequireLowercase = false;
o.Password.RequireUppercase = false;
o.Password.RequireNonLetterOrDigit = false;
o.Password.RequiredLength = 8;
})
.AddEntityFrameworkStores<ApplicationDbContext>()
.AddDefaultTokenProviders();
services.AddCaching();
services.AddSession();
services.AddMvc();
// Add application services.
services.AddTransient<IEmailSender, AuthMessageSender>();
services.AddTransient<ISmsSender, AuthMessageSender>();
services.AddTransient<ISubscriptionService, SubscriptionService>();
services.Configure<AuthMessageSenderOptions>(Configuration);
services.Configure<RecaptchaOptions>(Configuration);
__serviceProvider = services.BuildServiceProvider();
}
的事情是，它的工作以及很长一段时间，现在已经不再工作。此外，它甚至没有触及ExternalLoginCallback，所以我不知道该去哪里进一步调试。
你可以添加“ExternalLoginCallback”里面写的示例代码？ –
你使用的是什么API版本？如果到目前为止，API v2.2已于3月底关闭，并且在API v2.3中，访问令牌返回的格式已更改。 – CBroe
嗨看起来这可能是这里的问题。我如何检查它？ – skjoshi