Joh*_* Sp 6 .net c# console-application microsoft-graph-api
我正在console application用 C#构建一个。
我想调用Microsoft Graph API来访问和编辑我的SharePoint 中的一些 Excel 文件,以便我可以在我的组织中自动执行一些流程。
该应用程序的逻辑很简单。
Azure Active Directory以使用客户端凭据流对这个控制台应用程序进行身份验证,这意味着我们将提供一个 clientsID 和 AppKey。我从 Azure Active Directory > App Registrations 获取了 clientsID 和 AppKey 。

https://graph.microsoft.com/v1.0/me/
{
"error": {
"code": "InvalidAuthenticationToken",
"message": "Access token validation failure. Invalid audience.",
"innerError": {
"request-id": "0a3ec**************",
"date": "2019-10-15T13:54:33"
}
}
}Run Code Online (Sandbox Code Playgroud)
您将在下面找到我的应用程序的完整代码,其中包含获取访问令牌和调用 Graph API 的两种方法:
using Microsoft.IdentityModel.Clients.ActiveDirectory;
using System;
using System.Collections.Generic;
using System.Globalization;
using System.IdentityModel.Tokens;
using System.IO;
using System.Linq;
using System.Net;
using System.Net.Http;
using System.Net.Http.Headers;
using System.Text;
using System.Threading.Tasks;
using AuthenticationContext = Microsoft.IdentityModel.Clients.ActiveDirectory.AuthenticationContext;
namespace Project_Budget
{
class Program
{
private const string clientId = "14f1****************";
private const string aadInstance = "https://login.microsoftonline.com/{0}";
private const string tenant = "******.onmicrosoft.com";
private const string resource = "https://graph.windows.net";
private const string appKey = "IKV***********";
static string authority = String.Format(CultureInfo.InvariantCulture, aadInstance, tenant);
private static HttpClient httpClient = new HttpClient();
private static AuthenticationContext context = null;
private static ClientCredential credential = null;
static void Main(string[] args)
{
context = new AuthenticationContext(authority);
credential = new ClientCredential(clientId,appKey);
Task<string> token = GetToken();
token.Wait();
//Console.WriteLine(token.Result + "\n");
Task<string> graphCall = GetExcelFile(token.Result);
graphCall.Wait();
Console.WriteLine(graphCall.Result + "\n");
Console.ReadLine();
}
private static async Task<string> GetExcelFile(string result)
{
string apiJsonResult = null;
var apiCallString = "https://graph.microsoft.com/v1.0/me/";
httpClient.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", result);
var getResult = await httpClient.GetAsync(apiCallString);
if (getResult.Content != null)
{
apiJsonResult = await getResult.Content.ReadAsStringAsync();
}
return apiJsonResult;
}
private static async Task<string> GetToken()
{
AuthenticationResult result = null;
string token = null;
result = await context.AcquireTokenAsync(resource, credential); //authentication context object
token = result.AccessToken;
return token;
}
}
}Run Code Online (Sandbox Code Playgroud)
我已授予应用程序运行所需的所有访问权限。我也运行查询Graph Explorer并正常运行。
为什么我在控制台应用程序上收到此错误?
小智 4
理想情况下,资源实际上应该是
private const string resource = "https://graph.microsoft.com";
但您仍然需要选择应用程序中要定位的范围。您目前执行此操作的方式似乎确实获取/设置了由 Graph Explorer 为您完成的相关范围。
我建议遵循这个关于如何构建 .net core 控制台应用程序的快速入门教程,您应该立即启动并运行。它使用 MSAL 库,该库比您在场景中使用的 ADAL 库效果更好。
https://learn.microsoft.com/en-us/graph/tutorials/dotnet-core