Google api 如何配置ServiceStack.net以使用OAuthProvider对Google进行身份验证

我想将ServiceStack.net配置为使用OAuthProvider对Google进行身份验证。以下是我当前的配置：

            Plugins.Add(new AuthFeature(() => new AuthUserSession(),
            new IAuthProvider[] {
                new OAuthProvider(appSettings, 
                    "https://accounts.google.com/o/oauth2/auth", 
                    "google", 
                    "Google Client ID", 
                    "Google Client secret")
            }));

但是，我得到以下错误：

    response Status
    error       Code ArgumentNullException
    message     String reference not set to an instance of a String. Parameter name: s
    stack Trace
[Auth: 8/19/2013 7:48:47 PM]: [REQUEST: {provider:google}] System.ArgumentNullException: String reference not set to an instance of a String. Parameter name: s at System.Text.Encoding.GetBytes(String s) at ServiceStack.ServiceInterface.Auth.OAuthUtils.PercentEncode(String s) at ServiceStack.ServiceInterface.Auth.OAuthAuthorizer.<>c__DisplayClass3.<MakeSignature>b__1(String k) at System.Linq.Enumerable.WhereSelectEnumerableIterator`2.MoveNext() at System.Linq.Buffer`1..ctor(IEnumerable`1 source) at System.Linq.Enumerable.ToArray[TSource](IEnumerable`1 source) at ServiceStack.ServiceInterface.Auth.OAuthAuthorizer.MakeSignature(String method, String base_uri, Dictionary`2 headers) at ServiceStack.ServiceInterface.Auth.OAuthAuthorizer.AcquireRequestToken() at ServiceStack.ServiceInterface.Auth.OAuthProvider.Authenticate(IServiceBase authService, IAuthSession session, Auth request) at ServiceStack.ServiceInterface.Auth.AuthService.Authenticate(Auth request, String provider, IAuthSession session, IAuthProvider oAuthConfig) at ServiceStack.ServiceInterface.Auth.AuthService.Post(Auth request) at lambda_method(Closure , Object , Object ) at ServiceStack.ServiceHost.ServiceRunner`1.Execute(IRequestContext requestContext, Object instance, TRequest request)

响应状态
错误代码异常
消息字符串引用未设置为字符串的实例。参数名称：s
堆栈跟踪
[Auth:8/19/2013 7:48:47 PM]：[REQUEST:{provider:google}]System.ArgumentNullException:字符串引用未设置为字符串的实例。参数名称：s位于System.Text.Encoding.GetBytes（字符串s）位于ServiceStack.ServiceInterface.Auth.OAuthUtils.PercentEncode（字符串s）位于ServiceStack.ServiceInterface.Auth.OAuthAuthorizer.c_uDisplayClass3.b_uu1（字符串k）位于System.Linq.Enumerable.WhereselectEnumerableInterator'2.MoveNext（）位于System.Linq.Buffer'1..（IEnumerable'1 source）ServiceStack.ServiceInterface.Auth.OAuthProvider.Authenticate（）处的System.Linq.Enumerable.ToArray[TSource]（IEnumerable`1 source）处的ServiceStack.ServiceInterface.Auth.OAuthAuthorizer.MakeSignature（String方法、字符串基uri、字典`2头）处在lambda_方法（闭包、对象、对象）下的ServiceStack.ServiceInterface.Auth.authService.Authenticate（Auth请求、字符串提供程序、IAuthSession会话、IAuthProvider oAuthConfig）上的（IServiceBase authService、IAuthSession会话、Auth请求）在ServiceStack.ServiceHost.ServiceRunner`1.Execute（IRequestContext请求上下文、对象实例、TRequest请求）

根据网络追踪，没有任何东西能击中谷歌

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谢谢！

我也遇到了这个问题。我的解决方案是仔细检查服务根目录中的Web.Config。我没有正确设置ServiceStack OAuth配置

使用以下键：

<add key="oauth.GoogleOpenId.RedirectUrl" value="http://bootstrapapi.apphb.com/friends"/>
<add key="oauth.GoogleOpenId.CallbackUrl" value="http://bootstrapapi.apphb.com/api/auth/GoogleOpenId"/>

new GoogleOpenIdOAuthProvider(appSettings), //Sign-in with Google OpenId