这段使用github登陆的代码有问题吗

[kellynic]

官方文档：https://developer.github.com/v3/oauth/#1-redirect-users-to-request-github-access

	[Route("/oauth/[controller]")]
	public class GithubController : HomeBaseController
    {
		[HttpGet]
		public IActionResult 首页([FromServices] IConfigurationRoot cfg) {
			string state = Guid.NewGuid().ToString();
			Session.SetString("github_state", state);
			var client_id = WebUtility.UrlEncode(cfg["oauth:github:client_id"]);
			var redirect_uri = WebUtility.UrlEncode(cfg["oauth:github:redirect_uri"]);
			return Redirect($"https://github.com/login/oauth/authorize?client_id={client_id}&redirect_uri={redirect_uri}&state={state}&allow_signup=false");
		}
		[HttpGet("callback")]
		public IActionResult 回调([FromServices] IConfigurationRoot cfg, [FromQuery] string code,
			[FromQuery] string error, [FromQuery] string error_description, [FromQuery] string error_uri, [FromQuery] string state) {
			if (state != Session.GetString("github_state")) throw new Exception("state 值与 session 不一致");
			var client_id = WebUtility.UrlEncode(cfg["oauth:github:client_id"]);
			var client_secret = WebUtility.UrlEncode(cfg["oauth:github:client_secret"]);
			var redirect_uri = WebUtility.UrlEncode(cfg["oauth:github:redirect_uri"]);
			HttpClientHandler clientHandler = new HttpClientHandler { ClientCertificateOptions = ClientCertificateOption.Automatic };
			clientHandler.ServerCertificateCustomValidationCallback = (a, b, c, d) => true;
			HttpClient client = new HttpClient(clientHandler);
			StringContent content = new StringContent($"client_id={client_id}&client_secret={client_secret}&code={code}&redirect_uri={redirect_uri}&state={state}");
			var res = client.PostAsync("https://github.com/login/oauth/access_token", content).Result;
			// 上面这行代码出错，详细见后面说明

			string rt = res.Content.ReadAsStringAsync().Result;
			//access_token=e72e16c7e42f292c6912e7710c838347ae178b4a&scope=user%2Cgist&token_type=bearer
			Dictionary<string, string> rtnv = new Dictionary<string, string>();
			foreach(string tmp1 in rt.Replace("&", "&").Split('&')) {
				string[] tmp2 = tmp1.Split(new char[] { '=' }, 2);
				if (tmp2.Length != 2) continue;
				string k = WebUtility.UrlDecode(tmp2[0].Trim());
				string v = WebUtility.UrlDecode(tmp2[1].Trim());
				if (rtnv.ContainsKey(k)) rtnv[k] = v;
				else rtnv.Add(k, v);
			}
			string access_token;
			rtnv.TryGetValue("access_token", out access_token);

			return Redirect($"https://api.github.com/user?access_token?{access_token}");
		}
		bool serverCertificateCustomValidationCallback(HttpRequestMessage sender, X509Certificate2 certificate, X509Chain chain, SslPolicyErrors errors) {
			return true;
		}
	}

var res = client.PostAsync("https://github.com/login/oauth/access_token", content).Result; 这行代码出错
{System.Net.Http.WinHttpException: 服务器返回的信息无效或不可识别
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Runtime.CompilerServices.ConfiguredTaskAwaitable`1.ConfiguredTaskAwaiter.GetResult()
at System.Net.Http.WinHttpHandler.<StartRequest>d__101.MoveNext()}

本地开发环境地址：http://localhost:8888

[EnForGrass]

没看出问题呢，你可以按如下步骤检查一遍 　1.假如需要传递的两个参数是startId ,itemcount，传递的格式是Json。代码如下： var requestJson = JsonConvert.SerializeObject(new { client_id= "9cb284c7f59**248d0c2", client_secret= "b9bf39e345*75998b38714f23****bf86ac98fdb2" }); 　　代码的运行结果：{"client_id":"9cb284c7f59**248d0c2","client_secret":"b9bf39e345*75998b38714f23****bf86ac98fdb2"} 　　然后用System.Net.Http.StringContent把它打个包：

HttpContent httpContent = new StringContent(requestJson);

　　然后设置一下ContentType：

httpContent.Headers.ContentType = new MediaTypeHeaderValue("application/json");

2. 通过Http Post调用得到返回结果

var httpClient = new HttpClient();
var responseJson = httpClient.PostAsync("http://localhost:9000/api/demo/sitelist", httpContent)
    .Result.Content.ReadAsStringAsync().Result;

[kellynic]

引用 4 楼 Chinajiyong 的回复:

没看出问题呢，你可以按如下步骤检查一遍
　1.假如需要传递的两个参数是startId ,itemcount，传递的格式是Json。代码如下：
var requestJson = JsonConvert.SerializeObject(new { client_id= "9cb284c7f59**248d0c2", client_secret= "b9bf39e345*75998b38714f23****bf86ac98fdb2" });
　　代码的运行结果：{"client_id":"9cb284c7f59**248d0c2","client_secret":"b9bf39e345*75998b38714f23****bf86ac98fdb2"}

　　然后用System.Net.Http.StringContent把它打个包：

HttpContent httpContent = new StringContent(requestJson);

　　然后设置一下ContentType：

httpContent.Headers.ContentType = new MediaTypeHeaderValue("application/json");

2. 通过Http Post调用得到返回结果

var httpClient = new HttpClient();
var responseJson = httpClient.PostAsync("http://localhost:9000/api/demo/sitelist", httpContent)
    .Result.Content.ReadAsStringAsync().Result;

多谢大神的耐心解答，请看结果

[EnForGrass]

请先保证 client_id，client_secret这些参数正确， StringContent content = new StringContent($"client_id={client_id}&client_secret={client_secret}&code={code}&redirect_uri={redirect_uri}&state={state}"); 我一般习惯这样写

List<KeyValuePair<String, String>> paramList = new List<KeyValuePair<String, String>>();
                paramList.Add(new KeyValuePair<string, string>("client_id", "XXX"));

                response = httpClient.PostAsync(new Uri(url), new FormUrlEncodedContent(paramList)).Result;

[EnForGrass]

或者这种

HttpContent content = new StringContent(@"{ ""client_id"": ""XXX""}"); 

[kellynic]

引用 2 楼 Chinajiyong 的回复:

或者这种

HttpContent content = new StringContent(@"{ ""client_id"": ""XXX""}"); 

{
"client_id" : "9cb284c7f59**248d0c2",
"client_secret" : "b9bf39e345*75998b38714f23****bf86ac98fdb2",
"code" : "854ce37f96***7cdeca8",
"redirect_uri" : "http://localhost:8888/oauth/github/callback",
"state" : "1e1ddda1-247e-4e9b-b642-adc0613f0a18"
}

标 * 的为不想公布的参数，提交内容改成 json 方式，您看是否正常？



还是这里报错

An unhandled exception occurred while processing the request.
WinHttpException: 服务器返回的信息无效或不可识别