我刚刚做了一个 Identity 2.0 的自定义实现，正如你所说，我没有找到任何有用的文档。但幸运的是，我成功地实现了我的目标。
假设您使用的是 N 层架构，将视图与业务逻辑隔离开来，将业务逻辑与数据访问层隔离开来，我将回答您的问题。并假设使用了一个依赖注入容器，例如 Unity。
我将解释您必须遵循的步骤，才能将身份框架与自定义数据访问一起使用：
首先，您必须声明您的域类，实现 IUser，如果需要，还可以向其中添加自定义属性：
//This class is implementing IUser with Guid as type because
//I needed to use Guid as default Id.
public class CustomUser : IUser<Guid>
{
public string CustomProperty { get; set; }
}
然后，在您的业务逻辑层中，您应该有一个类来处理与用户授权、登录、密码恢复等相关的所有任务。这个类必须继承自 UserManager。结果如下：
// Business layer class must inherit from UserManager with
// CustomUser and Guid as types
public AuthorizationManager : UserManager<CustomUser, Guid>, IAuthorizationManager
{
private readonly ICustomUserMongoRepository repository;
private readonly ICustomEmailService emailService;
private readonly ICustomTokenProvider tokenProvider;
// Parameters being injected by Unity.
// container.RegisterType<ICustomUserMongoRepository, CustomUserMongoRepository>();
// ..
// ..
public AuthorizationManager(
ICustomUserMongoRepository repository,
ICustomEmailService emailService,
ICustomTokenProvider tokenProvider
)
// calling base constructor passing
// a repository which implements
// IUserStore, among others.
: base(repository)
{
this.repository = repository;
// this.EmailService is a property of UserManager and
// it has to be set to send emails by your class
this.EmailService = emailService;
// this.UserTokenProvider is a property of UserManager and
// it has to be set to generate tokens for user password
// recovery and confirmation tokens
this.UserTokenProvider = tokenProvider;
}
}
从UserManager继承时，它会提供一系列Identity使用的方法，它会强制你的类调用基础构造函数传递一个repository，但不是任何repository，repository必须实现接口：IUserStore， IPasswordStore，取决于您的要求。
这是很酷的事情发生的时候。在您的数据访问层中，您必须将存储库模式的自定义实现连接到 NoSQL 数据库（假设它是 Mongo）。因此，您的 ICustomUserMongoRepository 应该如下所示：
public interface ICustomUserMongoRepository : IUserPasswordStore<CustomUser, Guid>, IUserEmailStore<CustomUser, Guid>, IUserRoleStore<CustomUser, Guid>
{
}
你的 Mongo 存储库应该是这样的
public CustomUserMongoRepository : MongoRepository<CustomUser>, ICustomUserMongoRepository
{
// Here you must have your custom implementation (using Mongo) of
// ICustomUserRepository which is requesting your class to
// implement IUserPasswordStore methods as well
public Task CreateAsync(CustomUser user)
{
//Custom Mongo implementation
}
public Task DeleteAsync(CustomUser user)
{
//Custom Mongo implementation
}
public Task GetEmailAsync(CustomUser user)
{
//Custom Mongo implementation
}
public Task GetEmailConfirmedAsync(CustomUser user)
{
//Custom Mongo implementation
}
// ...
}
然后你的控制器看起来像这样：
public class AuthController : Controller
{
private readonly IAuthorizationManager manager;
// Manager being injected by Unity.
// container.RegisterType<IAuthorizationManager, AuthorizationManager>();
public AuthController(IAuthorizationManager manager)
{
this.manager = manager;
}
// Receives a LogInViewModel with all data needed to allow users to log in
[HttpPost]
public async Task<ActionResult> LogIn(LogInViewModel viewModel)
{
// FindAsync it's a method inherited from UserManager, that's
// using the Mongo repository passed to the base class
// in the AuthorizationManager constructor
var user = this.manager.FindAsync(viewModel.Email, viewModel.Password);
if(user != null){ // Log in user and create user session }
else { // Wrong username or password }
}
}
重要！
接口 IAuthorizationManager 用于交付基于 SOLID 原则的高质量软件。而且如果你仔细观察并深入思考，你会注意到这个接口必须具有所有UserManager的方法，以允许AuthController调用AuthorizationManager从UserManager类继承的所有方法
抱歉，帖子太长了。很难用几行来解释整个过程。我希望它有所帮助。如果您有任何疑问或问题，请评论此答案，我会尽快回复。