ASP.NET Core 中 Mongodb 数据存储的基于简单令牌的身份验证/授权

我需要实现非常简单的身份验证机制，基本上有两个角色：Owners and Users。我认为拥有 Enum 就足够了。应用程序本身是SPA，通过Asp.net core实现webapi。我看到文章 - 如何使用 EF Identity 实现它，但他们的模型看起来比我实际需要的复杂得多并且 EF 面向 SQL db，而我使用 mongo。所以我的用户看起来像这样：

class UserModel{
    Id, 
    Token, 
    Roles: ["Owners", "Users"],
    ...
}

那么我需要实现哪些接口并将其添加到 DI 才能使用[Authorize] and [Authorize(Roles="Users")]属性并且它们根据我在标头中发送的令牌正常工作？

让我澄清一下@Adem 的答案。您需要以特定方式实现自定义中间件。有 3 个抽象类需要实现来实现这个（答案是正确的）asp.net core rc2btw):

Microsoft.AspNetCore.Builder.AuthenticationOptions Microsoft.AspNetCore.Authentication.AuthenticationMiddleware<TOptions> Microsoft.AspNetCore.Authentication.AuthenticationHandler<TOptions>

然后将此中间件添加到您的启动类中。

代码示例：

public class TokenOptions : AuthenticationOptions
    {
        public TokenOptions() : base()
        {
            AuthenticationScheme = "Bearer";
            AutomaticAuthenticate = true;
        }
    }

public class AuthMiddleware : AuthenticationMiddleware<TokenOptions>
{
    protected override AuthenticationHandler<TokenOptions> CreateHandler()
    {
       return new AuthHandler(new TokenService());
    }

    public AuthMiddleware(RequestDelegate next, IOptions<TokenOptions> options, ILoggerFactory loggerFactory, UrlEncoder encoder) : base(next, options, loggerFactory, encoder)
    {
    }
}

public class AuthHandler : AuthenticationHandler<TokenOptions>
{
    private ITokenService _tokenService;

    public AuthHandler(ITokenService tokenService)
    {
        _tokenService = tokenService;
    }

    protected override async Task<AuthenticateResult> HandleAuthenticateAsync()
    {
        string token = null;
        AuthenticateResult result = null;
        string token = Helper.GetTokenFromHEader(Request.Headers["Authorization"]);
        // If no token found, no further work possible
        if (string.IsNullOrEmpty(token))
        {
            result = AuthenticateResult.Skip();
        }
        else
        {
            bool isValid = await _tokenService.IsValidAsync(token);
            if (isValid)
            {
                //assigning fake identity, just for illustration
                ClaimsIdentity claimsIdentity = new ClaimsIdentity("Custom");
                var claims = new List<Claim>();
                claims.Add(new Claim(ClaimTypes.Name, "admin"));
                claims.Add(new Claim(ClaimTypes.NameIdentifier, "admin"));
                claims.Add(new Claim(ClaimTypes.Role, "admin"));
                ClaimsPrincipal claimsPrincipal = new ClaimsPrincipal(claimsIdentity);
                result =
                    AuthenticateResult.Success(new AuthenticationTicket(claimsPrincipal,
                        new AuthenticationProperties(), Options.AuthenticationScheme));
            }
            else
            {
                result = AuthenticateResult.Skip();
            }
        }

        return result;
    }
}`

附注该代码仅用于说明想法。当然，您需要实现自己的处理程序。