Google api 我如何防止这种Google Analytics C#DotNetOpenAuth协议例外？

我在用电话。我遵循示例项目，但我一直从DotNetOpenAuth获得协议异常

以下是我现在拥有的：

public static void Main( string[] args )
{
   // Register the authenticator.
   NativeApplicationClient provider = new NativeApplicationClient(
      GoogleAuthenticationServer.Description, gaAppId, gaSecret );
   OAuth2Authenticator<NativeApplicationClient> auth = new OAuth2Authenticator<NativeApplicationClient>(
      provider, GetAuthorization );

   AnalyticsService analyticsService =
      new AnalyticsService( new BaseClientService.Initializer {
         Authenticator = auth,
         ApplicationName = @"Test Application",
      } );
   DataResource.GaResource.GetRequest request = analyticsService.Data.Ga.Get(
      gaId, @"2013-09-04", @"2013-09-18", "ga:totalEvents" );
   GaData data = request.Execute();

   Console.ReadKey();
}

private static IAuthorizationState GetAuthorization( NativeApplicationClient arg )
{
   // Get the auth URL:
   IAuthorizationState state =
      new AuthorizationState( new[] {AnalyticsService.Scopes.AnalyticsReadonly.GetStringValue()} );
   state.Callback = new Uri( NativeApplicationClient.OutOfBandCallbackUrl );

   // Retrieve the access token by using the authorization code:
   return arg.ProcessUserAuthorization( authCode, state );
}

这就是谷歌的回报：

HTTP/1.1 400 Bad Request
IRRELEVANT_HEADERS
{
  "error" : "invalid_request"
}

---

我在这里有点不知所措，不知道为什么会发生这样的事情，也不知道如何解决。我找不到其他有效的C#示例。这似乎是一种不同于过去的错误。你们中有谁知道我如何解决这个问题吗？

我进一步研究了peleyal提供的示例，并设法找到了问题所在。问题是我实际上并没有存储刷新令牌，而是存储了一个身份验证令牌。我应该使用身份验证令牌来生成刷新令牌

以下是简化的完整解决方案，供将来参考。差异可以在GetAuthorization函数中找到，该函数现在可以正确保存刷新令牌，并在刷新令牌不可用时打开浏览器窗口请求授权

private static refreshToken = null;

public static void Main( string[] args )
{
    // Register the authenticator.
    NativeApplicationClient provider = new NativeApplicationClient(
    GoogleAuthenticationServer.Description, gaAppId, gaSecret );
    OAuth2Authenticator<NativeApplicationClient> auth = new OAuth2Authenticator<NativeApplicationClient>(
        provider, GetAuthorization );

    AnalyticsService analyticsService = new AnalyticsService( new BaseClientService.Initializer {
        Authenticator = auth,
        ApplicationName = @"Test Application",
    } );
    DataResource.GaResource.GetRequest request = analyticsService.Data.Ga.Get( gaId, @"2013-09-04",
        @"2013-09-18", @"ga:totalEvents" );
    GaData data = request.Execute();

    Console.ReadKey();
}

private static IAuthorizationState GetAuthorization( NativeApplicationClient arg )
{
    // Get the auth URL:
    IAuthorizationState state = new AuthorizationState(
        new[] {AnalyticsService.Scopes.AnalyticsReadonly.GetStringValue()} );
    state.Callback = new Uri( NativeApplicationClient.OutOfBandCallbackUrl );

    if( !string.IsNullOrEmpty( refreshToken ) ) {
        try {
            state.RefreshToken = refreshToken;
            arg.RefreshToken( state );
        } catch {
            refreshToken = null;
        }
    }

    // If the refresh token is empty, request a new one by opening
    // a browser window. Allows the user to paste its authorization token
    // and saves the refresh token.
    if( string.IsNullOrEmpty( refreshToken ) ) {
        Uri authUri = arg.RequestUserAuthorization( state );

        // Request authorization from the user (by opening a browser window):
        Process.Start( authUri.ToString() );
        Console.Write( "  Authorization Code: " );
        string authCode = Console.ReadLine();
        Console.WriteLine();

        // Retrieve the access token by using the authorization code:
        state = arg.ProcessUserAuthorization( authCode, state );
        refreshToken = state.RefreshToken;
    }

    return state;
}

private static refreshttoken=null；
公共静态void Main（字符串[]args）
{
//注册验证器。
NativeApplicationClient提供程序=新的NativeApplicationClient(
GoogleAuthenticationServer.Description，gaAppId，gaSecret）；
OAuth2Authenticator auth=新的OAuth2Authenticator(
提供商，获取授权）；
AnalyticsService AnalyticsService=新的AnalyticsService（新的BaseClientService.Initializer{
Authenticator=auth，
ApplicationName=@“测试应用程序”，
} );
DataResource.GaResource.GetRequest请求=analyticsService.Data.Ga.Get（gaId，@“2013-09-04”，
@“2013-09-18”，简称“ga:totalEvents”）；
GaData data=request.Execute（）；
Console.ReadKey（）；
}
私有静态IAAuthorizationState GetAuthorization（NativeApplicationClient参数）
{
//获取身份验证URL：
IAAuthorizationState=新授权状态(
新[]{AnalyticsService.Scopes.AnalyticsReadonly.GetStringValue（）}）；
state.Callback=新Uri（NativeApplicationClient.OutOfBandCallbackUrl）；
如果（！string.IsNullOrEmpty（refreshToken））{
试一试{
state.RefreshToken=RefreshToken；
参数刷新令牌（状态）；
}抓住{
refreshToken=null；
}
}
//如果刷新令牌为空，请通过打开
//浏览器窗口。允许用户粘贴其授权令牌
//并保存刷新令牌。
if（string.IsNullOrEmpty（refreshToken））{
Uri authUri=arg.RequestUserAuthorization（状态）；
//请求用户授权（通过打开浏览器窗口）：
Process.Start（authUri.ToString（））；
控制台。写入（“授权代码：”）；
字符串authCode=Console.ReadLine（）；
Console.WriteLine（）；
//使用授权代码检索访问令牌：
state=arg.ProcessUserAuthorization（authCode，state）；
refreshToken=state.refreshToken；
}
返回状态；
}

您是否尝试在我们的样本存储库中运行我们的样本，比方说（任务样本-）。它应该适合你，按照自述说明，让我知道。工作完成后，检查工作示例和代码之间的差异。祝你好运@peleyal我运行了存储库中的样本，它们似乎工作正常。我的代码中一定有个bug。。。我注意到，该示例没有使用脱机刷新令牌，而使用刷新令牌（通过向授权请求url添加access\u type=offline&approval\u prompt=force）不起作用。我将仔细查看这些示例，看看是否可以找到差异，或者是否可以找到使用刷新令牌的示例。

private static refreshToken = null;

public static void Main( string[] args )
{
    // Register the authenticator.
    NativeApplicationClient provider = new NativeApplicationClient(
    GoogleAuthenticationServer.Description, gaAppId, gaSecret );
    OAuth2Authenticator<NativeApplicationClient> auth = new OAuth2Authenticator<NativeApplicationClient>(
        provider, GetAuthorization );

    AnalyticsService analyticsService = new AnalyticsService( new BaseClientService.Initializer {
        Authenticator = auth,
        ApplicationName = @"Test Application",
    } );
    DataResource.GaResource.GetRequest request = analyticsService.Data.Ga.Get( gaId, @"2013-09-04",
        @"2013-09-18", @"ga:totalEvents" );
    GaData data = request.Execute();

    Console.ReadKey();
}

private static IAuthorizationState GetAuthorization( NativeApplicationClient arg )
{
    // Get the auth URL:
    IAuthorizationState state = new AuthorizationState(
        new[] {AnalyticsService.Scopes.AnalyticsReadonly.GetStringValue()} );
    state.Callback = new Uri( NativeApplicationClient.OutOfBandCallbackUrl );

    if( !string.IsNullOrEmpty( refreshToken ) ) {
        try {
            state.RefreshToken = refreshToken;
            arg.RefreshToken( state );
        } catch {
            refreshToken = null;
        }
    }

    // If the refresh token is empty, request a new one by opening
    // a browser window. Allows the user to paste its authorization token
    // and saves the refresh token.
    if( string.IsNullOrEmpty( refreshToken ) ) {
        Uri authUri = arg.RequestUserAuthorization( state );

        // Request authorization from the user (by opening a browser window):
        Process.Start( authUri.ToString() );
        Console.Write( "  Authorization Code: " );
        string authCode = Console.ReadLine();
        Console.WriteLine();

        // Retrieve the access token by using the authorization code:
        state = arg.ProcessUserAuthorization( authCode, state );
        refreshToken = state.RefreshToken;
    }

    return state;
}