C# 而WebApi访问I'；我得到的是作为响应的登录Html页面，而不是api结果？

我已将WebApp和WebAPI注册到同一Azure广告中

我正在尝试从WebApp调用WebAPI

我已在azure AD应用程序中将服务WebAPI添加到我的WebApp中。如下-

当我运行WebAPI时，登录成功后，它会给我一个登录屏幕，我可以访问WebAPI方法。这是正常的行为

当我运行WebApp时，它将显示相同的登录屏幕，登录成功后，我可以看到WebApp

现在我想从WebApp调用WebAPI方法，但我不想为WebAPI设置登录屏幕，因为当我运行WebApp时，我将获得登录屏幕，登录后，我希望通过使用同一个用户，我应该能够访问WebAPI，而无需再次执行登录操作，因为我有一个令牌，它将同时适用于WebApp和WebAPI

WebAPI代码-

Startup.Auth.cs

public partial class Startup
    {
        private static string clientId = ConfigurationManager.AppSettings["ida:ClientId"];
        private static string appKey = ConfigurationManager.AppSettings["ida:ClientSecret"];
        private static string aadInstance = EnsureTrailingSlash(ConfigurationManager.AppSettings["ida:AADInstance"]);
        private static string tenantId = ConfigurationManager.AppSettings["ida:TenantId"];
        private static string postLogoutRedirectUri = ConfigurationManager.AppSettings["ida:PostLogoutRedirectUri"];

        public static readonly string Authority = aadInstance + tenantId;

        // This is the resource ID of the AAD Graph API.  We'll need this to request a token to call the Graph API.
        string graphResourceId = "https://graph.windows.net";

       public void ConfigureAuth(IAppBuilder app)
    {
        app.SetDefaultSignInAsAuthenticationType(CookieAuthenticationDefaults.AuthenticationType);
        app.UseCookieAuthentication(new CookieAuthenticationOptions());
        app.UseOpenIdConnectAuthentication(new OpenIdConnectAuthenticationOptions
        {
            ClientId = ClientId,
            Authority = Authority,
            PostLogoutRedirectUri = PostLogoutRedirectUri
        });


    }
        }

        private static string EnsureTrailingSlash(string value)
        {
            if (value == null)
            {
                value = string.Empty;
            }

            if (!value.EndsWith("/", StringComparison.Ordinal))
            {
                return value + "/";
            }

            return value;
        }
    }

public partial class Startup
    {
        private static string clientId = ConfigurationManager.AppSettings["ida:ClientId"];
        private static string appKey = ConfigurationManager.AppSettings["ida:ClientSecret"];
        private static string aadInstance = EnsureTrailingSlash(ConfigurationManager.AppSettings["ida:AADInstance"]);
        private static string tenantId = ConfigurationManager.AppSettings["ida:TenantId"];
        private static string postLogoutRedirectUri = ConfigurationManager.AppSettings["ida:PostLogoutRedirectUri"];

        public static readonly string Authority = aadInstance + tenantId;

        // This is the resource ID of the AAD Graph API.  We'll need this to request a token to call the Graph API.
        string graphResourceId = "https://graph.windows.net";

        public void ConfigureAuth(IAppBuilder app)
        {
            ApplicationDbContext db = new ApplicationDbContext();

            app.SetDefaultSignInAsAuthenticationType(CookieAuthenticationDefaults.AuthenticationType);

            app.UseCookieAuthentication(new CookieAuthenticationOptions());

            app.UseOpenIdConnectAuthentication(
                new OpenIdConnectAuthenticationOptions
                {
                    ClientId = clientId,
                    Authority = Authority,
                    PostLogoutRedirectUri = postLogoutRedirectUri,

                    Notifications = new OpenIdConnectAuthenticationNotifications()
                    {
                        // If there is a code in the OpenID Connect response, redeem it for an access token and refresh token, and store those away.
                       AuthorizationCodeReceived = (context) => 
                       {
                           var code = context.Code;
                           ClientCredential credential = new ClientCredential(clientId, appKey);
                           string signedInUserID = context.AuthenticationTicket.Identity.FindFirst(ClaimTypes.NameIdentifier).Value;
                           AuthenticationContext authContext = new AuthenticationContext(Authority, new ADALTokenCache(signedInUserID));
                           AuthenticationResult result = authContext.AcquireTokenByAuthorizationCodeAsync(
                               code, new Uri(HttpContext.Current.Request.Url.GetLeftPart(UriPartial.Path)), credential, graphResourceId).Result;

                           return Task.FromResult(0);
                       }
                    }
                });
        }

        private static string EnsureTrailingSlash(string value)
        {
            if (value == null)
            {
                value = string.Empty;
            }

            if (!value.EndsWith("/", StringComparison.Ordinal))
            {
                return value + "/";
            }

            return value;
        }
    }

TestController.cs

[Authorize]
    public class TestController : ApiController
    {
        [HttpGet]
        [Route("api/getdata")]
        public IEnumerable<string> GetData()
        {
            return new string[] { "value1", "value2" };
        }
    }

[Authorize]
    public class HomeController : Controller
    {
        private static string clientIdWebApp = ConfigurationManager.AppSettings["ida:clientIdWebApp"];
        private static string clientIdWebApi = ConfigurationManager.AppSettings["ida:clientIdWebApi"];
        private static string clientSecretWebApp = ConfigurationManager.AppSettings["ida:clientSecretWebApp"];
        private static string aadInstance = (ConfigurationManager.AppSettings["ida:AADInstance"]);
        private static string tenantId = ConfigurationManager.AppSettings["ida:TenantId"];
        private static string PostLogoutRedirectUri = ConfigurationManager.AppSettings["ida:PostLogoutRedirectUri"];
        Uri redirectUri = new Uri(PostLogoutRedirectUri);
        public static readonly string Authority = aadInstance + tenantId;

        public ActionResult Index()
        {          
                return View();
        }

        public async System.Threading.Tasks.Task<ActionResult> About()
        {
            ViewBag.Message = "Your application description page.";
            try
            {
                AuthenticationResult result = null;

                string userObjectID = ClaimsPrincipal.Current.FindFirst("http://schemas.xmlsoap.org/ws/2005/05/identity/claims/nameidentifier").Value;
                AuthenticationContext authContext = new AuthenticationContext(Startup.Authority, new ADALTokenCache(userObjectID));
                ClientCredential credential = new ClientCredential(clientIdWebApp, clientSecretWebApp);
                //AcquireTokenSilentAsync should have to work as i'm accessing WebAPI using same user I logged in to WebApp 
                result = authContext.AcquireTokenSilentAsync(clientIdWebApi,credential, new UserIdentifier(userObjectID, UserIdentifierType.UniqueId)).Result;
                // gettign exception {"Failed to acquire token silently as no token was found in the cache. Call method AcquireToken"} but I got match id into cache.
                HttpClient client = new HttpClient();
                HttpRequestMessage request = new HttpRequestMessage(HttpMethod.Get, "https://MYWEBAPI/api/getdata");
                request.Headers.Authorization = new AuthenticationHeaderValue("Bearer", result.AccessToken);
                HttpResponseMessage response = await client.SendAsync(request);

                // Return the user's profile in the view.
                if (response.IsSuccessStatusCode)
                {
                    string responseString = await response.Content.ReadAsStringAsync();
                }
            }
            catch (AdalException ex)
            {
            }
            return View();
        }
    }

HomeController.cs

[Authorize]
    public class TestController : ApiController
    {
        [HttpGet]
        [Route("api/getdata")]
        public IEnumerable<string> GetData()
        {
            return new string[] { "value1", "value2" };
        }
    }

[Authorize]
    public class HomeController : Controller
    {
        private static string clientIdWebApp = ConfigurationManager.AppSettings["ida:clientIdWebApp"];
        private static string clientIdWebApi = ConfigurationManager.AppSettings["ida:clientIdWebApi"];
        private static string clientSecretWebApp = ConfigurationManager.AppSettings["ida:clientSecretWebApp"];
        private static string aadInstance = (ConfigurationManager.AppSettings["ida:AADInstance"]);
        private static string tenantId = ConfigurationManager.AppSettings["ida:TenantId"];
        private static string PostLogoutRedirectUri = ConfigurationManager.AppSettings["ida:PostLogoutRedirectUri"];
        Uri redirectUri = new Uri(PostLogoutRedirectUri);
        public static readonly string Authority = aadInstance + tenantId;

        public ActionResult Index()
        {          
                return View();
        }

        public async System.Threading.Tasks.Task<ActionResult> About()
        {
            ViewBag.Message = "Your application description page.";
            try
            {
                AuthenticationResult result = null;

                string userObjectID = ClaimsPrincipal.Current.FindFirst("http://schemas.xmlsoap.org/ws/2005/05/identity/claims/nameidentifier").Value;
                AuthenticationContext authContext = new AuthenticationContext(Startup.Authority, new ADALTokenCache(userObjectID));
                ClientCredential credential = new ClientCredential(clientIdWebApp, clientSecretWebApp);
                //AcquireTokenSilentAsync should have to work as i'm accessing WebAPI using same user I logged in to WebApp 
                result = authContext.AcquireTokenSilentAsync(clientIdWebApi,credential, new UserIdentifier(userObjectID, UserIdentifierType.UniqueId)).Result;
                // gettign exception {"Failed to acquire token silently as no token was found in the cache. Call method AcquireToken"} but I got match id into cache.
                HttpClient client = new HttpClient();
                HttpRequestMessage request = new HttpRequestMessage(HttpMethod.Get, "https://MYWEBAPI/api/getdata");
                request.Headers.Authorization = new AuthenticationHeaderValue("Bearer", result.AccessToken);
                HttpResponseMessage response = await client.SendAsync(request);

                // Return the user's profile in the view.
                if (response.IsSuccessStatusCode)
                {
                    string responseString = await response.Content.ReadAsStringAsync();
                }
            }
            catch (AdalException ex)
            {
            }
            return View();
        }
    }

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这将取决于API身份验证的配置。让我在这里更新我的完整代码