Asp.net 身份 2 User.Identity.GetUserId<int>() 总是 returns 0？

Question

我已经扩展了 Asp.net Identity 2 模型，通过遵循 post 之类的 this and this 来使用整数键。但是，这行代码总是returns0.

User.Identity.GetUserId<int>()

即使 User.Identity.IsAuthenticated 为真并且 User.Identity.GetUserName() returns 正确的用户名。我已经看到 this post 但它没有帮助，因为我已经在控制器方法而不是构造函数中调用 User.Identity.GetUserId() 。 post 中对 "getUserIdCallback" 的引用很有趣，也许我需要类似的东西。任何帮助深表感谢。

Answer 1

事实证明，我需要在自定义 OAuthAuthorizationServerProvider 的 GrantResourceOwnerCredentials 方法中将用户 ID 添加到 ClaimsIdentity。方法如下：

public override async Task GrantResourceOwnerCredentials(OAuthGrantResourceOwnerCredentialsContext context)
{
    var allowedOrigin = context.OwinContext.Get<string>("as:clientAllowedOrigin") ?? "*";

    context.OwinContext.Response.Headers.Add("Access-Control-Allow-Origin", new[] { allowedOrigin });

    var userManager = context.OwinContext.GetUserManager<ApplicationUserManager>();

    ApplicationUser user = await userManager.FindAsync(context.UserName, context.Password);

    if (user == null)
    {
        context.SetError("invalid_grant", "The user name or password is incorrect.");
        return;
    }

    var identity = new ClaimsIdentity(context.Options.AuthenticationType);
    //THIS IS THE IMPORTANT LINE HERE!!!!!
    identity.AddClaim(new Claim(ClaimTypes.NameIdentifier, user.Id.ToString()));
    identity.AddClaim(new Claim(ClaimTypes.Name, context.UserName));
    identity.AddClaim(new Claim("sub", context.UserName));

    foreach (var role in userManager.GetRoles(user.Id))
    {
        identity.AddClaim(new Claim(ClaimTypes.Role, role));
    }

    var props = new AuthenticationProperties(new Dictionary<string, string>
    {
        { "as:client_id", context.ClientId ?? string.Empty }
    });

    var ticket = new AuthenticationTicket(identity, props);
    context.Validated(ticket);
}

Asp.net 身份 2 User.Identity.GetUserId<int>() 总是 returns 0？

Asp.net Identity 2 User.Identity.GetUserId<int>() always returns 0?

asp.net-identity-2