Java

Microsoft Teams OAuth2 Client Credentials Authentication

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Demonstrates how to authenticate with OAuth 2.0 using the client credentials grant type. Java

import com.chilkatsoft.*;

public class ChilkatExample {

  static {
    try {
        System.loadLibrary("chilkat");
    } catch (UnsatisfiedLinkError e) {
      System.err.println("Native code library failed to load.\n" + e);
      System.exit(1);
    }
  }

  public static void main(String argv[])
  {
    boolean success = false;

    // This requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    CkHttp http = new CkHttp();

    // Provide the information needed for Chilkat to automatically fetch the OAuth2.0 
    // access token as needed.
    // This is the new "Integrated OAuth2 Client Credentials" feature introduced in Chilkat v9.5.0.96.  
    CkJsonObject jsonOAuthCC = new CkJsonObject();

    // --------------------------------------------------------------------------------------------------------
    // You'll need to have registered an app in Azure beforehand.
    // 
    // Note: Creating a Team requires the following Application permissions:
    // Team.Create, Teamwork.Migrate.All, Group.ReadWrite.All**, Directory.ReadWrite.All**
    // 
    // See How to Create an Azure App Registration for OAuth 2.0 Client Credentials
    // --------------------------------------------------------------------------------------------------------

    // Use the values from your App Registration in Azure.
    jsonOAuthCC.UpdateString("client_id","e1cd2318-xxxx-4916-bfd6-xxxxxxxxxxxx");
    jsonOAuthCC.UpdateString("client_secret","K.d8Q~RoJxxxxvCj_u_xxxxxxxxxxxxxxxxxxxxx");

    // You'll always use this scope for client credentials, because the allowed actions
    // are determined by the App Permissions defined when you registered the app in Azure.
    jsonOAuthCC.UpdateString("scope","https://graph.microsoft.com/.default");

    // The token endpoint includes your tenant ID.  Use your tenant ID (not the tenant ID shown here).
    jsonOAuthCC.UpdateString("token_endpoint","https://login.microsoftonline.com/112d7ed6-71bf-4eba-a866-738364321bfc/oauth2/v2.0/token");

    // Provide the OAuth2 information. Chilkat will use this information to automatically fetch the OAuth2 access token as needed,
    http.put_AuthToken(jsonOAuthCC.emit());

    // ------------------------------------------------------------------------------
    // To create a Microsoft Team, we want to send an HTTP request like the following:
    // 
    // Note: The following is the minimal JSON for a request using Applicaton permissions (i.e. the access token retrieved using the client credentials grant).
    // 
    // POST https://graph.microsoft.com/v1.0/teams
    // Content-Type: application/json
    // 
    // {
    //    "template@odata.bind":"https://graph.microsoft.com/v1.0/teamsTemplates('standard')",
    //    "displayName":"My Sample Team",
    //    "description":"My Sample Team�s Description",
    //    "members":[
    //       {
    //          "@odata.type":"#microsoft.graph.aadUserConversationMember",
    //          "roles":[
    //             "owner"
    //          ],
    //          "user@odata.bind":"https://graph.microsoft.com/v1.0/users('0040b377-61d8-43db-94f5-81374122dc7e')"
    //       }
    //    ]
    // }

    CkJsonObject json = new CkJsonObject();
    json.UpdateString("\"template@odata.bind\"","https://graph.microsoft.com/v1.0/teamsTemplates('standard')");
    json.UpdateString("displayName","My Sample Team");
    json.UpdateString("description","My Sample Team�s Description");
    json.UpdateString("members[0].\"@odata.type\"","#microsoft.graph.aadUserConversationMember");
    json.UpdateString("members[0].roles[0]","owner");
    json.UpdateString("members[0].\"user@odata.bind\"","https://graph.microsoft.com/v1.0/users('4ee732c3-322e-4a6b-b729-2fd1eb5c6004')");

    json.put_EmitCompact(false);
    System.out.println(json.emit());

    http.SetRequestHeader("Content-type","application/json");

    CkHttpResponse resp = new CkHttpResponse();
    success = http.HttpJson("POST","https://graph.microsoft.com/v1.0/teams",json,"application/json",resp);
    if (success == false) {
        System.out.println(http.lastErrorText());
        return;
        }

    // A successful response is indicated by a 202 response status code and an empty response body.
    System.out.println("Response Status Code: " + resp.get_StatusCode());
    System.out.println("Response Body:");
    System.out.println(resp.bodyStr());

    if (resp.get_StatusCode() >= 400) {
        System.out.println("Response Header:");
        System.out.println(resp.header());
        System.out.println("Failed.");
        }
  }
}