Question

我正在尝试为PowerBI报告执行数据集刷新。我创建了网关，我可以从管理门户进行数据集刷新。我可以通过管理门户中的UI（即上次刷新列）验证刷新是否成功。但是当我尝试从C＃webapi代码进行刷新时，我得到了下面提到的错误。

Error Message:
The remote server returned an error: (401) Unauthorized.

Stack Trace:
   at System.Net.HttpWebRequest.GetResponse()
   at BlueSkyPowerBIService.Controllers.PowerBIController.<RefreshDatasetsForReports>d__13.MoveNext() in C:\Krishnan\RSI\SourceCode\Bluesky Developement\BlueSky Development\BlueSkyPowerBIService\BlueSkyPowerBIService\Controllers\PowerBIController.cs:line 258

在刷新代码之前，我能够再次对Azure AD进行身份验证并成功生成auth令牌，但是当它调用API进行刷新时，它会因上述错误而崩溃。

请找到我用于数据刷新的代码

List<ReportDetails> reportDetailsList = new List<ReportDetails>();

            var result = new EmbedConfig();
            ReportDetails reportDetails = new ReportDetails();
            try
            {
                result = new EmbedConfig { Username = username, Roles = roles };
                var error = GetWebConfigErrors();
                if (error != null)
                {
                    result.ErrorMessage = error;
                    //return View(result);
                    return null;
                }
                var credential = new UserPasswordCredential(Username, Password);

                var authenticationContext = new AuthenticationContext(AuthorityUrl);
                var authenticationResult = await authenticationContext.AcquireTokenAsync(ResourceUrl, ClientId, credential);

                if (authenticationResult == null)
                {
                    result.ErrorMessage = "Authentication Failed.";
                    //return View(result);
                    return null;
                }

                var tokenCredentials = new TokenCredentials(authenticationResult.AccessToken, "Bearer");

                // Create a Power BI Client object. It will be used to call Power BI APIs.
                using (var client = new PowerBIClient(new Uri(ApiUrl), tokenCredentials))
                {
                    // Get a list of reports.
                    var reports = await client.Reports.GetReportsAsync();
                    for (int index = 0; index < reports.Value.Count; index++)
                    {
                        reportDetails = new ReportDetails();
                        Report report = reports.Value[index];

                        HttpWebRequest request;

                        if (report.Id == "6317f207-57d3-4f5f-9644-18bfbb9bef99")
                        {
                            var url = "https://api.powerbi.com/v1.0/myorg/groups/{0}/datasets/{1}/refreshes";
                            request = System.Net.HttpWebRequest.CreateHttp(String.Format(url, GroupId, report.DatasetId));

                            request.KeepAlive = true;
                            request.Method = "POST";
                            request.ContentLength = 0;

                            request.Headers.Add("Authorization", String.Format("Bearer {0}", authenticationResult.AccessToken));

                            using (Stream writer = request.GetRequestStream())
                            {
                                var response = (HttpWebResponse)request.GetResponse();
                                Console.WriteLine("Dataset refresh request{0}", response.StatusCode.ToString());
                            }
                        }
                    }//end for(int index=0; index< reports.Value.Count; index++)
                    return reportDetailsList;
                }
            }
            catch (HttpOperationException exc)
            {
                result.ErrorMessage = string.Format("Status: {0} ({1})\r\nResponse: {2}\r\nRequestId: {3}", exc.Response.StatusCode, (int)exc.Response.StatusCode, exc.Response.Content, exc.Response.Headers["RequestId"].FirstOrDefault());
            }
            catch (Exception exc)
            {
                result.ErrorMessage = exc.ToString();
            }

我已在“应用注册”

下的Azure门户中授予了所有必需的权限

为什么我收到此错误的任何想法？如何解决这个问题？

Answer 1

这看起来像是用于执行刷新的Azure Active Directory应用程序的权限的错误配置。如图here所示，我们需要注册本机应用程序并声明一些权限才能访问Power BI rest API。

您需要确保此应用具有Dataset.ReadWrite.All权限。您可以在Azure Active Directory -> App Registrations下的Azure门户中查看甚至更改应用程序的权限。如果您无法看到该应用程序，请从右侧的下拉菜单中选择All apps。

这就是我们的应用程序看起来如何成功使用通过其余API执行刷新

401 - 数据集刷新PowerBI期间未经授权的错误

1 个答案: