使用客户端凭据从monday.com api获取asp.net核心c#上的令牌

Question

我知道这个错误

InvalidCastException:无法将“令牌”类型的对象强制转换为“Microsoft.AspNetCore.Mvc.IActionResult”

我做错什么了吗？我对编程很陌生，这是我第一次实习。我原以为这会是小菜一碟，但几天来我一直在做研究，试图在C# .NET 6中建立一个身份验证流(Auth2.0)

我只是现在太累了，我很感激你的帮助.我有客户身份，客户机密和客户签名。

        using Newtonsoft.Json;
        using Microsoft.AspNetCore.Mvc;
        using System.Diagnostics;
        using WebApplication1.Models;
        using RestSharp;
        using Microsoft.AspNetCore.Authorization;
        using Microsoft.Extensions.Configuration;
        using System;
        using System.Net.Http;
        using System.Net.Http.Json;
        using System.Threading.Tasks;
        using static System.Net.Mime.MediaTypeNames;
        using System;
        using System.Collections.Generic;
        using System.Net.Http;
        using System.Net.Http.Headers;
        using System.Threading.Tasks;
        using System.Web;
        
        
                public async Task<IActionResult> Index()
                {
                    using (var httpClient = new HttpClient())
                    {
                        string baseAddress = "https://auth.monday.com/oauth2/token";
        
                        string grant_type = "client_credentials";
                        string client_id = "id";
                        string client_secret = "secret";
        
                        var clientCreds = System.Text.Encoding.UTF8.GetBytes($"{client_id}:{client_secret}");
                        httpClient.DefaultRequestHeaders.Authorization =
                          new AuthenticationHeaderValue("Basic", System.Convert.ToBase64String(clientCreds));
        
                        var form = new Dictionary<string, string>
                {
                    {"grant_type", grant_type}
                };
        
                        HttpResponseMessage tokenResponse = await httpClient.PostAsync(baseAddress, new FormUrlEncodedContent(form));
                        var jsonContent = await tokenResponse.Content.ReadAsStringAsync();
                        Token tok = JsonConvert.DeserializeObject<Token>(jsonContent);
                        return (IActionResult)tok;
                    }
        
                    return View();
                }

Answer 1

我不太清楚你在阅读你的问题和代码后想要做什么，但你已经被告知了原因。运行时不能将“令牌”类型转换为IActionResult类型。

您应该在MS中查找InvalidCastException，以更好地理解转换是如何工作的。

当您返回'( IActionResult ) tok‘时，不能强迫tok成为IActionResult。

Answer 2

tok对象不是从IActionResult继承的，所以您要获得InvalidCastException。

将tok作为视图数据传递

using System.Threading.Tasks;
using System.Web;
    
public async Task<IActionResult> Index()
{
                using (var httpClient = new HttpClient())
                {
                    string baseAddress = "https://auth.monday.com/oauth2/token";
    
                    string grant_type = "client_credentials";
                    string client_id = "id";
                    string client_secret = "secret";
    
                    var clientCreds = System.Text.Encoding.UTF8.GetBytes($"{client_id}:{client_secret}");
                    httpClient.DefaultRequestHeaders.Authorization =
                      new AuthenticationHeaderValue("Basic", System.Convert.ToBase64String(clientCreds));
    
                    var form = new Dictionary<string, string>
            {
                {"grant_type", grant_type}
            };
    
                    HttpResponseMessage tokenResponse = await httpClient.PostAsync(baseAddress, new FormUrlEncodedContent(form));
                    var jsonContent = await tokenResponse.Content.ReadAsStringAsync();
                    Token tok = JsonConvert.DeserializeObject<Token>(jsonContent);
        ViewData["token"] = tok ;       
                    return View();
                }
    
    return View();
}

在索引视图中，使用

@{ var token = ViewData["token"] as Token;}