使用ADAL C#作为机密用户/守护程序服务器/服务器到服务器 – 401

401- Unauthorized authentication using REST API Dynamics CRM with Azure AD

和

Dynamics CRM Online 2016 – Daemon / Server application Azure AD authentication error to Web Api

和

Dynamics CRM 2016 Online Rest API with client credentials OAuth flow

我需要在天蓝云中的Web服务和Dynamics CRM Online 2016之间进行通信,而无需任何登录屏幕！该服务将有一个REST api,可以触发CRM上的CRUD操作(我也将实现身份验证)

我认为这称为“机密客户端”或“守护程序服务器”或只是“服务器到服务器”

我在Azure AD中正确设置了我的服务(“委托权限=在线访问动态作为组织用户”,没有其他选项)

我在VS中创建了一个ASP.NET WEB API项目,它在Azure中创建了我的WebService,并在CRM的Azure AD中创建了“应用程序”.

我的代码看起来像这样(请忽略EntityType和returnValue)：

public class WolfController : ApiController
  {
    private static readonly string Tenant = "xxxxx.onmicrosoft.com";
    private static readonly string ClientId = "dxxx53-42xx-43bc-b14e-c1e84b62752d";
    private static readonly string Password = "j+t/DXjn4PMVAHSvZGd5sptGxxxxxxxxxr5Ki8KU="; // client secret,valid for one or two years
    private static readonly string ResourceId = "https://tenantname-naospreview.crm.dynamics.com/";


    public static async Task<AuthenticationResult> AcquireAuthentificationToken()
    {
      AuthenticationContext authenticationContext = new AuthenticationContext("https://login.windows.net/"+ Tenant);
      ClientCredential clientCredentials = new ClientCredential(ClientId,Password);   
      return await authenticationContext.AcquireTokenAsync(ResourceId,clientCredentials);
    }

    // GET: just for calling the DataOperations-method via a GET,ignore the return
    public async Task<IEnumerable<Wolf>> Get()
    {
      AuthenticationResult result = await AcquireAuthentificationToken();
      await DataOperations(result);    

      return new Wolf[] { new Wolf() };
    }


    private static async Task DataOperations(AuthenticationResult authResult)
    {
      using (HttpClient httpClient = new HttpClient())
      {
        httpClient.BaseAddress = new Uri(ResourceId);
        httpClient.Timeout = new TimeSpan(0,2,0); //2 minutes
        httpClient.DefaultRequestHeaders.Add("OData-MaxVersion","4.0");
        httpClient.DefaultRequestHeaders.Add("OData-Version","4.0");
        httpClient.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
        httpClient.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer",authResult.AccessToken);

        Account account = new Account();
        account.name = "Test Account";
        account.telephone1 = "555-555";

        string content = String.Empty;
        content = JsonConvert.SerializeObject(account,new JsonSerializerSettings() {DefaultValueHandling = DefaultValueHandling.Ignore});            

        //Create Entity/////////////////////////////////////////////////////////////////////////////////////
        HttpRequestMessage request = new HttpRequestMessage(HttpMethod.Post,"api/data/v8.1/accounts");
        request.Content = new StringContent(content);
        request.Content.Headers.ContentType = MediaTypeHeaderValue.Parse("application/json");
        HttpResponseMessage response = await httpClient.SendAsync(request);
        if (response.IsSuccessStatusCode)
        {
          Console.WriteLine("Account '{0}' created.",account.name);
        }
        else //Getting Unauthorized here
        {
          throw new Exception(String.Format("Failed to create account '{0}',reason is '{1}'.",account.name,response.ReasonPhrase));
        } ... and more code

在调用我的GET请求时,我获得了401 Unauthorized,尽管我已经获得并发送了AccessToken.

有任何想法吗？

编辑：
我也试过这个博客中提供的代码(只有解决问题的来源,也没有用)：

https://samlman.wordpress.com/2015/06/04/getting-an-azure-access-token-for-a-web-application-entirely-in-code/

使用此代码：

public class WolfController : ApiController
  {
    private static readonly string Tenant = System.Configuration.ConfigurationManager.AppSettings["ida:Tenant"];
    private static readonly string TenantGuid = System.Configuration.ConfigurationManager.AppSettings["ida:TenantGuid"];
    private static readonly string ClientId = System.Configuration.ConfigurationManager.AppSettings["ida:ClientID"];
    private static readonly string Password = System.Configuration.ConfigurationManager.AppSettings["ida:Password"]; // client secret,valid for one or two years
    private static readonly string ResourceId = System.Configuration.ConfigurationManager.AppSettings["ida:ResourceID"];

    // GET: api/Wolf
    public async Task<IEnumerable<Wolf>> Get()
    {
      AuthenticationResponse authenticationResponse = await GetAuthenticationResponse();
      String result = await DoSomeDataOperations(authenticationResponse);

      return new Wolf[]
      {
              new Wolf()
              {
                Id = 1,Name = result
              }
      };
    }

    private static async Task<AuthenticationResponse> GetAuthenticationResponse()
    {
      //https://samlman.wordpress.com/2015/06/04/getting-an-azure-access-token-for-a-web-application-entirely-in-code/
      //create the collection of values to send to the POST

      List<KeyValuePair<string,string>> vals = new List<KeyValuePair<string,string>>();
      vals.Add(new KeyValuePair<string,string>("grant_type","client_credentials"));
      vals.Add(new KeyValuePair<string,string>("resource",ResourceId));
      vals.Add(new KeyValuePair<string,string>("client_id",ClientId));
      vals.Add(new KeyValuePair<string,string>("client_secret",Password));
      vals.Add(new KeyValuePair<string,string>("username","someUser@someTenant.onmicrosoft.com"));
      vals.Add(new KeyValuePair<string,string>("password","xxxxxx"));

      //create the post Url   
      string url = string.Format("https://login.microsoftonline.com/{0}/oauth2/token",TenantGuid);

      //make the request
      HttpClient hc = new HttpClient();

      //form encode the data we’re going to POST
      HttpContent content = new FormUrlEncodedContent(vals);

      //plug in the post body
      HttpResponseMessage hrm = hc.PostAsync(url,content).Result;

      AuthenticationResponse authenticationResponse = null;
      if (hrm.IsSuccessStatusCode)
      {
        //get the stream
        Stream data = await hrm.Content.ReadAsStreamAsync();
        DataContractJsonSerializer serializer = new DataContractJsonSerializer(typeof (AuthenticationResponse));
        authenticationResponse = (AuthenticationResponse) serializer.ReadObject(data);
      }
      else
      {
        authenticationResponse = new AuthenticationResponse() {ErrorMessage = hrm.StatusCode +" "+hrm.RequestMessage};
      }

      return authenticationResponse;
    }

    private static async Task<String> DoSomeDataOperations(AuthenticationResponse authResult)
    {
      if (authResult.ErrorMessage != null)
      {
        return "problem getting AuthToken: " + authResult.ErrorMessage;
      }


      using (HttpClient httpClient = new HttpClient())
      {
        httpClient.BaseAddress = new Uri(ResourceId);
        httpClient.Timeout = new TimeSpan(0,authResult.access_token);


        //Retreive Entity/////////////////////////////////////////////////////////////////////////////////////
        var retrieveResponse = await httpClient.GetAsync("/api/data/v8.0/feedback?$select=title,rating&$top=10");
        //var retrieveResponse = await httpClient.GetAsync("/api/data/v8.0/$metadata");

        if (!retrieveResponse.IsSuccessStatusCode)
        {
          return retrieveResponse.ReasonPhrase;

        }
        return "it worked!";
      }
    }