C# 使用autofac识别服务器3

我正在尝试将IdentityServer3实现到使用Autofac的现有项目中。我遇到的问题是，在设置自定义服务时，如果我运行项目并尝试进行身份验证，则会出现以下错误：

“尝试创建“TokenEndpointController”类型的控制器时出错。请确保该控制器具有无参数公共构造函数。”

现在我知道，当服务未正确设置时，这是一个通用的autofac错误。 这个错误实际上是在抱怨我的自定义UserService声明：

在类型“Business.IdentityServer.IdentityServerUserService”上使用“Autofac.Core.Activators.Reflection.DefaultConstructorFinder”找到的构造函数都不能使用可用的服务和参数调用： 无法解析构造函数“Void.ctor（Business.Providers.IUserProvider）”的参数“Business.Providers.IUserProvider userProvider”

现在，在我开始使用IdentityServer3之前，我已经有了一个用户提供程序，它是在autofac中设置的，如下所示：

builder.RegisterType<DatabaseContext>().As<DbContext>().InstancePerDependency();
builder.RegisterType<UserProvider>().As<IUserProvider>().InstancePerDependency();

public class IdentityServerUserService : UserServiceBase
{
    private readonly IUserProvider _userProvider;

    public IdentityServerUserService(IUserProvider userProvider)
    {
        _userProvider = userProvider;
    }

    public override async Task AuthenticateLocalAsync(LocalAuthenticationContext context)
    {
        var user = await _userProvider.FindAsync(context.UserName, context.Password);

        if (user != null && !user.Disabled)
        {
            // Get the UserClaims

            // Add the user to our context
            context.AuthenticateResult = new AuthenticateResult(user.Id, user.UserName, new List<Claim>());
        }
    }
}

    private static IdentityServerServiceFactory Configure(this IdentityServerServiceFactory factory, CormarConfig config)
    {
        var serviceOptions = new EntityFrameworkServiceOptions { ConnectionString = config.SqlConnectionString };
        factory.RegisterOperationalServices(serviceOptions);
        factory.RegisterConfigurationServices(serviceOptions);

        factory.CorsPolicyService = new Registration<ICorsPolicyService>(new DefaultCorsPolicyService { AllowAll = true }); // Allow all domains to access authentication
        factory.Register<DbContext>(new Registration<DbContext>(dr => dr.ResolveFromAutofacOwinLifetimeScope<DbContext>()));
        factory.UserService = new Registration<IUserService>(dr => dr.ResolveFromAutofacOwinLifetimeScope<IUserService>());
        factory.ClientStore = new Registration<IClientStore>(dr => dr.ResolveFromAutofacOwinLifetimeScope<IClientStore>());
        factory.ScopeStore = new Registration<IScopeStore>(dr => dr.ResolveFromAutofacOwinLifetimeScope<IScopeStore>());

        return factory;
    }

builder.RegisterType（）.As（）.InstancePerDependency（）；
builder.RegisterType（）.As（）.InstancePerDependence（）；

这在以前是有效的，所以我知道用户提供者实际上有它的所有依赖项

我的用户服务如下所示：

builder.RegisterType<DatabaseContext>().As<DbContext>().InstancePerDependency();
builder.RegisterType<UserProvider>().As<IUserProvider>().InstancePerDependency();

public class IdentityServerUserService : UserServiceBase
{
    private readonly IUserProvider _userProvider;

    public IdentityServerUserService(IUserProvider userProvider)
    {
        _userProvider = userProvider;
    }

    public override async Task AuthenticateLocalAsync(LocalAuthenticationContext context)
    {
        var user = await _userProvider.FindAsync(context.UserName, context.Password);

        if (user != null && !user.Disabled)
        {
            // Get the UserClaims

            // Add the user to our context
            context.AuthenticateResult = new AuthenticateResult(user.Id, user.UserName, new List<Claim>());
        }
    }
}

    private static IdentityServerServiceFactory Configure(this IdentityServerServiceFactory factory, CormarConfig config)
    {
        var serviceOptions = new EntityFrameworkServiceOptions { ConnectionString = config.SqlConnectionString };
        factory.RegisterOperationalServices(serviceOptions);
        factory.RegisterConfigurationServices(serviceOptions);

        factory.CorsPolicyService = new Registration<ICorsPolicyService>(new DefaultCorsPolicyService { AllowAll = true }); // Allow all domains to access authentication
        factory.Register<DbContext>(new Registration<DbContext>(dr => dr.ResolveFromAutofacOwinLifetimeScope<DbContext>()));
        factory.UserService = new Registration<IUserService>(dr => dr.ResolveFromAutofacOwinLifetimeScope<IUserService>());
        factory.ClientStore = new Registration<IClientStore>(dr => dr.ResolveFromAutofacOwinLifetimeScope<IClientStore>());
        factory.ScopeStore = new Registration<IScopeStore>(dr => dr.ResolveFromAutofacOwinLifetimeScope<IScopeStore>());

        return factory;
    }

公共类标识ServerUserService:UserServiceBase
{
专用只读IUserProvider\u用户提供程序；
公共标识服务器用户服务（IUserProvider userProvider）
{
_userProvider=userProvider；
}
公共覆盖异步任务AuthenticateLocalAsync（LocalAuthenticationContext）
{
var user=await\u userProvider.FindAsync（context.UserName，context.Password）；
if（user！=null&&！user.Disabled）
{
//获取用户声明
//将用户添加到我们的上下文中
context.AuthenticateResult=新的AuthenticateResult（user.Id，user.UserName，new List（））；
}
}
}

---

有人知道我如何解决这个问题吗？

这是因为我是如何配置工厂的。我现在有这样一个：

builder.RegisterType<DatabaseContext>().As<DbContext>().InstancePerDependency();
builder.RegisterType<UserProvider>().As<IUserProvider>().InstancePerDependency();

public class IdentityServerUserService : UserServiceBase
{
    private readonly IUserProvider _userProvider;

    public IdentityServerUserService(IUserProvider userProvider)
    {
        _userProvider = userProvider;
    }

    public override async Task AuthenticateLocalAsync(LocalAuthenticationContext context)
    {
        var user = await _userProvider.FindAsync(context.UserName, context.Password);

        if (user != null && !user.Disabled)
        {
            // Get the UserClaims

            // Add the user to our context
            context.AuthenticateResult = new AuthenticateResult(user.Id, user.UserName, new List<Claim>());
        }
    }
}

    private static IdentityServerServiceFactory Configure(this IdentityServerServiceFactory factory, CormarConfig config)
    {
        var serviceOptions = new EntityFrameworkServiceOptions { ConnectionString = config.SqlConnectionString };
        factory.RegisterOperationalServices(serviceOptions);
        factory.RegisterConfigurationServices(serviceOptions);

        factory.CorsPolicyService = new Registration<ICorsPolicyService>(new DefaultCorsPolicyService { AllowAll = true }); // Allow all domains to access authentication
        factory.Register<DbContext>(new Registration<DbContext>(dr => dr.ResolveFromAutofacOwinLifetimeScope<DbContext>()));
        factory.UserService = new Registration<IUserService>(dr => dr.ResolveFromAutofacOwinLifetimeScope<IUserService>());
        factory.ClientStore = new Registration<IClientStore>(dr => dr.ResolveFromAutofacOwinLifetimeScope<IClientStore>());
        factory.ScopeStore = new Registration<IScopeStore>(dr => dr.ResolveFromAutofacOwinLifetimeScope<IScopeStore>());

        return factory;
    }

private static IdentityServerServiceFactory配置（此IdentityServerServiceFactory工厂，CormarConfig配置）
{
var servicepoptions=new EntityFrameworkServiceOptions{ConnectionString=config.SqlConnectionString}；
注册操作服务（服务选项）；
工厂注册表配置服务（服务选项）；
factory.CorsPolicyService=new Registration（new DefaultCorsPolicyService{AllowAll=true}）；//允许所有域访问身份验证
工厂注册（新注册（dr=>dr.ResolveFromAutofacOwinLifetimeScope（））；
factory.UserService=新注册（dr=>dr.ResolveFromAutofacOwinLifetimeScope（））；
factory.ClientStore=新注册（dr=>dr.ResolveFromAutofacOwinLifetimeScope（））；
factory.ScopeStore=新注册（dr=>dr.ResolveFromAutofacOwinLifetimeScope（））；
返回工厂；
}

---

我的用户服务还是一样的，所以一切正常。

我也有这个问题。我看不到IUserProvider在哪里注册？您注册DbContext的方式的改变是否有意义？IUserProvider是我自己为

用户管理器

实现的，我在autofac模块中注册了它，IUserProvider不是接口吗？也许你的意思是UserManager是IUserProvider的一个实现，但我不确定UserManager是什么。是的，它是一个接口，如果你创建一个新项目，它会称之为ApplicationUserManager，但我讨厌这个名称。以下是一篇文章：