IdentityServer4 和 ASP.NET Core 2.2 与 ASP.NET Identity 集成答案

【问题标题】：IdentityServer4 and ASP.NET Core 2.2 Integrating with ASP.NET IdentityIdentityServer4 和 ASP.NET Core 2.2 与 ASP.NET Identity 集成
【发布时间】：2026-01-13 22:25:02
【问题描述】：

收到此错误

InvalidOperationException：没有注册类型“Microsoft.AspNetCore.Identity.UserManager`1[Microsoft.AspNetCore.Identity.IdentityUser]”的服务。

我正在尝试将 identityserver 和 asp.net 身份 ui 放在一个项目中。

关注此http://docs.identityserver.io/en/dev/quickstarts/6_aspnet_identity.html#new-project-for-asp-net-identity 文章以获取所需的额外代码。我做了以下步骤

创建 ASP.NET Core 2.2 MVC 应用，单帐户身份验证
对其进行了测试以确保它可以正常工作，注册用户，登录，一切正常。
添加了 nuget 包IdentityServer4.AspnetIdentity

在下方添加了 Config.cs 文件

public static class Config
{
public static IEnumerable<IdentityResource> GetIdentityResources()
{
    return new List<IdentityResource>
    {
        new IdentityResources.OpenId(),
        new IdentityResources.Profile(),
        new IdentityResources.Email(),
    };
}
public static IEnumerable<ApiResource> GetApiResources()
{
    return new List<ApiResource>
    {
        new ApiResource("eventsapi", "Events Api")
    };
}
public static IEnumerable<Client> GetClients()
{
    return new List<Client>
    {
        new Client
        {
            ClientId = "client",

            // no interactive user, use the clientid/secret for authentication
            AllowedGrantTypes = GrantTypes.ClientCredentials,

            // secret for authentication
            ClientSecrets =
            {
                new Secret("secret".Sha256())
            },

            // scopes that client has access to
            AllowedScopes = { "eventsapi" }
        }
    };
}
}

添加了 ApplicationUser.cs

public class ApplicationUser:IdentityUser
{
}

修改Startup.cs（注释代码是生成的）

  public class Startup
   {
     public Startup(IConfiguration configuration)
   {
      Configuration = configuration;
   }

public IConfiguration Configuration { get; }


public void ConfigureServices(IServiceCollection services)
{
    services.Configure<CookiePolicyOptions>(options =>
    {

        options.CheckConsentNeeded = context => true;
        options.MinimumSameSitePolicy = SameSiteMode.None;
    });

    services.AddDbContext<ApplicationDbContext>(options =>
        options.UseSqlServer(
            Configuration.GetConnectionString("DefaultConnection")));
    /*
    services.AddDefaultIdentity<IdentityUser>()
        .AddDefaultUI(UIFramework.Bootstrap4)
        .AddEntityFrameworkStores<ApplicationDbContext>();
    */
    //REPLACED ABOVE
    services.AddIdentity<ApplicationUser, IdentityRole>()
        .AddEntityFrameworkStores<ApplicationDbContext>()
        .AddDefaultTokenProviders();




    services.AddMvc().SetCompatibilityVersion(CompatibilityVersion.Version_2_2);

    //ADDDED
    services.AddIdentityServer()
        .AddDeveloperSigningCredential()
        .AddInMemoryPersistedGrants()
        .AddInMemoryIdentityResources(Config.GetIdentityResources())
        .AddInMemoryApiResources(Config.GetApiResources())
        .AddInMemoryClients(Config.GetClients())
        .AddAspNetIdentity<ApplicationUser>();

}


public void Configure(IApplicationBuilder app, IHostingEnvironment env)
{
    if (env.IsDevelopment())
    {
        app.UseDeveloperExceptionPage();
        app.UseDatabaseErrorPage();
    }
    else
    {
        app.UseExceptionHandler("/Home/Error");
         app.UseHsts();
    }

    app.UseHttpsRedirection();
    app.UseStaticFiles();
    app.UseCookiePolicy();

    //app.UseAuthentication();
    //REPLACED ABOVE
    app.UseIdentityServer();
    app.UseMvc(routes =>
    {
        routes.MapRoute(
            name: "default",
            template: "{controller=Home}/{action=Index}/{id?}");
    });
}

}

【问题讨论】：

您将在项目中的某处（在控制器或视图中）拥有此代码：UserManager<IdentityUser> userManager。找到所有这些并将它们更改为UserManager<ApplicationUser> userManager。

标签： c# asp.net-core identityserver4

【解决方案1】：

对于此错误，请尝试将IdentityUser 更改为Views\Shared\_LoginPartial.cshtml。

@using Microsoft.AspNetCore.Identity
@inject SignInManager<ApplicationUser> SignInManager
@inject UserManager<ApplicationUser> UserManager

<ul class="navbar-nav">
@if (SignInManager.IsSignedIn(User))
{
    <li class="nav-item">
        <a  class="nav-link text-dark" asp-area="Identity" asp-page="/Account/Manage/Index" title="Manage">Hello @User.Identity.Name!</a>
    </li>
    <li class="nav-item">
        <form  class="form-inline" asp-area="Identity" asp-page="/Account/Logout" asp-route-returnUrl="@Url.Action("Index", "Home", new { area = "" })">
            <button  type="submit" class="nav-link btn btn-link text-dark">Logout</button>
        </form>
    </li>
}
else
{
    <li class="nav-item">
        <a class="nav-link text-dark" asp-area="Identity" asp-page="/Account/Register">Register</a>
    </li>
    <li class="nav-item">
        <a class="nav-link text-dark" asp-area="Identity" asp-page="/Account/Login">Login</a>
    </li>
}
</ul>

然后，您需要注册AddDefaultUI，用于处理对Startup.cs中的action的身份区域请求喜欢

services.AddIdentity<ApplicationUser, IdentityRole>()
    .AddDefaultUI(UIFramework.Bootstrap4)
    .AddEntityFrameworkStores<ApplicationDbContext>()
    .AddDefaultTokenProviders();

【讨论】：