“尝试激活时无法解析类型为“Microsoft.Identity.Web.MicrosoftIdentityConsentAndConditionalAccessHandler”的服务

Question

我正在尝试连接到 Azure AD 和 Microsoft Graph 以获取用户照片。我正在使用 .NET 6 Razor Pages，这是我在 Program.cs 中的配置

string[] initialScopes = builder.Configuration.GetValue<string>("DownstreamApi:Scopes")?.Split(' ');

builder.Services
    .AddAuthentication(OpenIdConnectDefaults.AuthenticationScheme)
    .AddMicrosoftIdentityWebApp(builder.Configuration.GetSection("AzureAd"))
    .EnableTokenAcquisitionToCallDownstreamApi(initialScopes)
    .AddMicrosoftGraph(builder.Configuration.GetSection("DownstreamApi"))
    .AddInMemoryTokenCaches();

当我在此处放置断点时，我可以看到它具有我在 appsettings.json 设置的

initialScopes

值

在我的index.cshtml.cs中，这是我的代码：

[Authorize]
public class IndexModel : PageModel
{
    private readonly GraphServiceClient _graphServiceClient;

    private readonly MicrosoftIdentityConsentAndConditionalAccessHandler _consentHandler;

    private string[] _graphScopes;

    public IndexModel(GraphServiceClient graphServiceClient, 
        MicrosoftIdentityConsentAndConditionalAccessHandler consentHandler, IConfiguration configuration)
    {
        _graphServiceClient = graphServiceClient;
        _consentHandler = consentHandler;

        // Capture the Scopes for Graph that were used in the original request for an Access token (AT) for MS Graph as
        // they'd be needed again when requesting a fresh AT for Graph during claims challenge processing
        _graphScopes = configuration.GetValue<string>("DownstreamApi:Scopes")?.Split(' ');


    }

    [AuthorizeForScopes(ScopeKeySection = "DownstreamApi:Scopes")]
    public async Task OnGetAsync()
    {

    }        
}

但是在

app.Run();

处失败了。错误信息是：

“无法解析类型的服务 'Microsoft.Identity.Web.MicrosoftIdentityConsentAndConditionalAccessHandler' 尝试激活时

我对此进行了谷歌搜索，它说我需要

EnableTokenAcquisitionToCallDownstreamApi

，但我想我已经配置了这个。

Answer 1

我遇到了同样的问题，最终起作用的是添加以下代码。

services.AddServerSideBlazor()
   .AddMicrosoftIdentityConsentHandler();

此外，您还需要在 AddMicrosoftIdentityWebApp 中进行以下配置设置来应对 CAE 挑战。

“客户端能力”：[“cp1”]