Youtube API access is granted but I still have Invalid Credentials error

问题

Trying to test search functions of the YoutubeAPI, but getting this

Could it be because of my channel(which is binded to my gmail account, which I currently using in console.developers.google) was banned?

UPD: Created new account, situation still the same

Well, what I've have done here:

1. created porject in console.developers.google
2. activated youtube data api(choosed app or somth like this, not the js one), downloaded json, which looks like that

3. First I call the Authorize method (new page shows, asking permission, where I just clicking allow button, and everything seems like ok), but then I trying to use Search and I get 401 error

heres the code

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;

namespace WebApplication3.Services.ServiceAuthoriaztion.Impl
{
    using System.Data.Entity.Core.Metadata.Edm;
    using System.IO;
    using System.Threading;
    using Google.Apis;
    using Google.Apis.Auth.OAuth2;
    using Google.Apis.Services;
    using Google.Apis.Util.Store;
    using Google.Apis.YouTube.v3;


    public class Youtube : ICustomService
    {
        private static YouTubeService _currentYouTubeService;

        public void Authorize()
        {
            UserCredential userCreds;
           ;
            var filePath = string.Format("{0}{1}",AppDomain.CurrentDomain.BaseDirectory, @"App_Data\client_id.json");
            using (var stream = new FileStream(filePath, FileMode.Open, FileAccess.Read))
            {
                userCreds = GoogleWebAuthorizationBroker.AuthorizeAsync(
                    GoogleClientSecrets.Load(stream).Secrets,
                    new[] {YouTubeService.Scope.YoutubeReadonly},
                    "user",
                    CancellationToken.None,
                    new FileDataStore("YouTubeData")
                    ).Result;
            }

            _currentYouTubeService = new YouTubeService(new BaseClientService.Initializer
            {
                HttpClientInitializer = userCreds,
                ApplicationName = "yttest"
            });

            SerachTest();

        }

        private void SerachTest()
        {
            var searchListRequest = _currentYouTubeService.Search.List("snippet");
            searchListRequest.Q = "Google"; // Replace with your search term.
            searchListRequest.MaxResults = 50;

            // Call the search.list method to retrieve results matching the specified query term.
            var searchListResponse = searchListRequest.Execute();

            var asa = new List<string>();

        }
    }
}

UPD2: Tried other type of app - not helped either. JSON file looks like that

回答1:

Okay, I decided start everything from scratch, so, I don't know what exactly helped me but here's a simple instructions about how I made it work. And also, here's the proof :)

So, first I created new project, set name of it DanilTestApp.

Second, turned on YouTube Data API there.

When I was creating new credentials, choosed OAuth Client ID and then, as a type, choosed Other.

After it was ready I just downloaded JSON.

Then in my code I decide to add refreshing token functionality, so now it looks like this

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;

namespace WebApplication3.Services.ServiceAuthoriaztion.Impl
{
    using System.Data.Entity.Core.Metadata.Edm;
    using System.IO;
    using System.Threading;
    using Google.Apis;
    using Google.Apis.Auth.OAuth2;
    using Google.Apis.Services;
    using Google.Apis.Util.Store;
    using Google.Apis.YouTube.v3;


    public class Youtube : ICustomService
    {
        private static YouTubeService _currentYouTubeService;

        public void Authorize()
        {
            UserCredential userCreds; 
            var filePath = string.Format("{0}{1}", AppDomain.CurrentDomain.BaseDirectory, @ "App_Data\client_id.json");
            using (var stream = new FileStream(filePath, FileMode.Open, FileAccess.Read))
            {
                userCreds = GoogleWebAuthorizationBroker.AuthorizeAsync(
                 GoogleClientSecrets.Load(stream).Secrets,
                 new[] {
          YouTubeService.Scope.YoutubeReadonly
                 },
                 "user",
                 CancellationToken.None,
                 new FileDataStore("YouTubeData")
                ).Result;
            }

            RefreshToken(userCreds);

            _currentYouTubeService = new YouTubeService(new BaseClientService.Initializer
            {
                HttpClientInitializer = userCreds,
                ApplicationName = "DanilTestApp"
            });

            SerachTest();

        }

        private void SerachTest()
        {
            var searchListRequest = _currentYouTubeService.Search.List("snippet");
            searchListRequest.Q = "Google"; // Replace with your search term.
            searchListRequest.MaxResults = 50;

            // Call the search.list method to retrieve results matching the specified query term.
            var searchListResponse = searchListRequest.Execute();

            var asa = new List<string>();

        }
        //might not work, but something like this, got working code at home, office right now
        private void UpdateTokenIfExpired(UserCredential credential)
        {
           if (credential.Token.IsExpired(credential.Flow.Clock))
           {

               Console.WriteLine("The access token has expired, refreshing it");
               if (credential.RefreshTokenAsync(CancellationToken.None).Result)
               {
                   Console.WriteLine("The access token is now refreshed");
               }
               else
               {
                   throw new Exception("refresh token failed");
               }

           }
       }

    }
}

来源：https://stackoverflow.com/questions/40573697/youtube-api-access-is-granted-but-i-still-have-invalid-credentials-error