Solved: Issue to use Power Query to make a Post API call

yangty152 · ‎02-04-2022

I'm trying to follow a tutorial to make an API post call, but I cannot get it work. Can someone please help me check where I get it wrong? I removed the sensitive information but other than that, this is what I have, when I refresh, I recieve error below:

let
body = "{""grant_type"":""password"",""resource"":""https://analysis.windows.net/powerbi/api"",""client_id"":"""",""username"":"""",""password"":"""",""client_secret"":""""}",
url = "https://login.microsoftonline.com/common/oauth2/token/",
Data = Web.Contents(
url,
[
Headers=[#"Content-Type" = "application/json; charset=utf-8"],
Content=Text.ToBinary(body)
]
),
response = Json.Document(Data)
in
response

Anonymous · ‎02-09-2022

Hi @yangty152 ,

The error is that the URL(https://login.microsoftonline.com/common/oauth2/token/) you entered only accepts POST, OPTIONS requests. But has received a GET request.

Refer to the syntax posted in this thread:

 //Resource Uri for Power BI API
            string resourceUri = "https://analysis.windows.net/powerbi/api";

            //OAuth2 authority Uri
            string authorityUri = "https://login.microsoftonline.com/common/";

            //Get access token:
            // To call a Power BI REST operation, create an instance of AuthenticationContext and call AcquireToken
            // AuthenticationContext is part of the Active Directory Authentication Library NuGet package
            // To install the Active Directory Authentication Library NuGet package in Visual Studio,
            //  run "Install-Package Microsoft.IdentityModel.Clients.ActiveDirectory" from the nuget Package Manager Console.

            // AcquireToken will acquire an Azure access token
            // Call AcquireToken to get an Azure token from Azure Active Directory token issuance endpoint
            AuthenticationContext authContext = new AuthenticationContext(authorityUri);
            var token = authContext.AcquireTokenAsync(resourceUri, clientID, new Uri(redirectUri)).Result.AccessToken;

Best Regards,
Eyelyn Qin
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

View solution in original post

Anonymous · ‎02-09-2022

Hi @yangty152 ,

The error is that the URL(https://login.microsoftonline.com/common/oauth2/token/) you entered only accepts POST, OPTIONS requests. But has received a GET request.

Refer to the syntax posted in this thread:

 //Resource Uri for Power BI API
            string resourceUri = "https://analysis.windows.net/powerbi/api";

            //OAuth2 authority Uri
            string authorityUri = "https://login.microsoftonline.com/common/";

            //Get access token:
            // To call a Power BI REST operation, create an instance of AuthenticationContext and call AcquireToken
            // AuthenticationContext is part of the Active Directory Authentication Library NuGet package
            // To install the Active Directory Authentication Library NuGet package in Visual Studio,
            //  run "Install-Package Microsoft.IdentityModel.Clients.ActiveDirectory" from the nuget Package Manager Console.

            // AcquireToken will acquire an Azure access token
            // Call AcquireToken to get an Azure token from Azure Active Directory token issuance endpoint
            AuthenticationContext authContext = new AuthenticationContext(authorityUri);
            var token = authContext.AcquireTokenAsync(resourceUri, clientID, new Uri(redirectUri)).Result.AccessToken;

Best Regards,
Eyelyn Qin
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.