问对https://oauth2.googleapis.com/token的Post请求在代码中不断失败，在邮递员上工作

EN

Uri myUri = new Uri(request.AbsoluteUrl);
string googleCode = HttpUtility.ParseQueryString(myUri.Query).Get("code");

var googleClientId = "435335443.apps.googleusercontent.com";
var uri = "https://oauth2.googleapis.com/token";
var googleClientSecret = "Test123";
var _httpClient = new HttpClient();
var data = new GoogleAccessToken
           {
              clientId = googleClientId,
              clientSecret = googleClientSecret,
              grant_type = "authorization_code",
              redirect_uri = "http://localhost:53419/GoogleOAuth", //Same as one I used to get the code
              code = googleCode
          };

var jsonRequest = JsonConvert.SerializeObject(data);
var rawResponse = await _httpClient.PostAsync(uri, new StringContent(jsonRequest, Encoding.UTF8, "application/json"));

{"code":"657856987608768-asfdsacsdcsd","client_Id":"435335443.apps.googleusercontent.com","client_secret":"Test123","redirect_uri":"http://localhost:53419/GoogleOAuth","grant_type":"authorization_code"}

POST /token HTTP/1.1
Host: oauth2.googleapis.com
Content-Type: application/json


{
"code":"657856987608768-asfdsacsdcsd",
"client_id":"435335443.apps.googleusercontent.com",
"client_secret":"Test123",
"redirect_uri":"http://localhost:53419/GoogleOAuth",
"grant_type":"authorization_code"
}