使用與asp.net web api的gmail api

Question

我想在asp.net web api項目中使用gmail api。這是我到目前爲止有：

 UserCredential credential; 
     var cleantSecretPath = HostingEnvironment.MapPath("~/client_secret.json"); 
     var rootPath = HostingEnvironment.MapPath("~/"); 

     if (rootPath != null) 
     { 
      var credentialPath = Path.Combine(rootPath, "Credentials"); 
      var directoryInfo = Directory.CreateDirectory(credentialPath); 
     } 

     var credentialsPath = HostingEnvironment.MapPath("~/Credentials/"); 

     using (var stream = new FileStream(cleantSecretPath, FileMode.Open, FileAccess.Read)) 
     { 
      var secret = GoogleClientSecrets.Load(stream).Secrets; 
      var dataStore = new FileDataStore("test"); 
      credential = GoogleWebAuthorizationBroker.AuthorizeAsync(secret, Scopes, _credentials.Email, CancellationToken.None, dataStore).Result; 
     } 

     var service = new GmailService(new BaseClientService.Initializer() 
     { 
      HttpClientInitializer = credential, 
      ApplicationName = ApplicationName, 
     }); 
     return 

它工作本地主機上，但只要我將其部署到Azure我收到一個錯誤：

<Error> 
    <Message>An error has occurred.</Message> 
    <ExceptionMessage>One or more errors occurred.</ExceptionMessage> 
    <ExceptionType>System.AggregateException</ExceptionType> 
    <StackTrace> 
    at System.Threading.Tasks.Task.ThrowIfExceptional(Boolean includeTaskCanceledExceptions) at System.Threading.Tasks.Task`1.GetResultCore(Boolean waitCompletionNotification) at System.Threading.Tasks.Task`1.get_Result() at BL.GmailServiceBl.GetGmailService() in D:\Development\DotNetProjects\GmailAnalysis\BL\GmailServiceBl.cs:line 53 at BL.AnalysisService..ctor(PersonCredentials credentials) in D:\Development\DotNetProjects\GmailAnalysis\BL\AnalysisService.cs:line 22 at WebAPI.Controllers.ValuesController.Get(PersonCredentials credentials) in D:\Development\DotNetProjects\GmailAnalysis\WebAPI\Controllers\ValuesController.cs:line 63 at lambda_method(Closure , Object , Object[]) at System.Web.Http.Controllers.ReflectedHttpActionDescriptor.ActionExecutor.<>c__DisplayClass10.<GetExecutor>b__9(Object instance, Object[] methodParameters) at System.Web.Http.Controllers.ReflectedHttpActionDescriptor.ActionExecutor.Execute(Object instance, Object[] arguments) at System.Web.Http.Controllers.ReflectedHttpActionDescriptor.ExecuteAsync(HttpControllerContext controllerContext, IDictionary`2 arguments, CancellationToken cancellationToken) --- End of stack trace from previous location where exception was thrown --- at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Web.Http.Controllers.ApiControllerActionInvoker.<InvokeActionAsyncCore>d__0.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Web.Http.Controllers.ActionFilterResult.<ExecuteAsync>d__2.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Web.Http.Controllers.AuthenticationFilterResult.<ExecuteAsync>d__0.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Web.Http.Dispatcher.HttpControllerDispatcher.<SendAsync>d__1.MoveNext() 
    </StackTrace> 
    <InnerException> 
     <Message>An error has occurred.</Message> 
     <ExceptionMessage>Access is denied</ExceptionMessage> 
     <ExceptionType>System.Net.HttpListenerException</ExceptionType> 
     <StackTrace> 
     at Microsoft.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at Microsoft.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccess(Task task) at Google.Apis.Auth.OAuth2.GoogleWebAuthorizationBroker.<AuthorizeAsync>d__1.MoveNext() in c:\code\github\google-api-dotnet-client\Tools\Google.Apis.Release\bin\Release\1.9.2\default\Src\GoogleApis.Auth.DotNet4\OAuth2\GoogleWebAuthorizationBroker.cs:line 59 
     </StackTrace> 
    </InnerException> 
</Error> 

我使用client_secret.json爲Web應用。有人能給我一個例子，或者指出我正確的方向。

Answer 1

這裏有一個工作的例子：

var filePath = HostingEnvironment.MapPath("~/build-info.json"); 
var fileStream = new FileStream(filePath, FileMode.Open, FileAccess.Read); 
string fileContent; 
using (var reader = new StreamReader(fileStream)) 
{ 
    fileContent = reader.ReadToEnd(); 
} 

我已經在本地運行這個並將其部署到蔚藍的Web應用程序，它在兩個位置工作。

所以像下面應該工作：

UserCredential credential; 
var filePath = HostingEnvironment.MapPath("~/client_secret.json"); 
using (var stream = new FileStream(filePath , FileMode.Open, FileAccess.Read)) 
{ 
    credential = await GoogleWebAuthorizationBroker.AuthorizeAsync(GoogleClientSecrets.Load(stream).Secrets, 
     new[] { GmailService.Scope.GmailReadonly }, 
     "user", CancellationToken.None); 
} 

Answer 2

幾天後解決類似的問題，我發現，這不是你應該怎麼做：

credential = GoogleWebAuthorizationBroker.AuthorizeAsync(secret, Scopes, _credentials.Email, CancellationToken.None, dataStore).Result; 

相反，應使用FlowMetadata方法進行身份驗證，demonstrated here.