我尝试登录本地主机，一切正常。
代码：
public static bool LoginGoogleCalendar(string clientId, string clientSecret, string idGCalendarUser, string calendarServiceScope, string folder)
{
try
{
UserCredential credential = GoogleWebAuthorizationBroker.AuthorizeAsync(
new ClientSecrets
{
ClientId = clientId,
ClientSecret = clientSecret,
},
new[] { calendarServiceScope },
idGCalendarUser,
CancellationToken.None, new FileDataStore(folder)).Result;
return true;
}
catch (Exception ex)
{
Elmah.ErrorSignal.FromCurrentContext().Raise(ex);
return false;
}
}
（我正确设置了文件数据存储的授权）
在 Google 开发者控制台中：
重定向 URI：http://localhost/authorize/Javascript Origins： http://localhost:8081
我使用 Visual Studio 2013， IIS 8
当我尝试登录服务器时，将阻止整个服务器几分钟，之后的答案是：System.Web.HttpException 请求超时。
在 Google 开发者控制台中：
重定向 URI：http://pippo.pluto.it/authorize/Javascript 起源：http://pippo.pluto.it
在服务器上：IIS 7
对我示例的引用：https://developers.google.com/google-apps/calendar/instantiate
我遇到了同样的问题。互联网上的很多例子告诉你使用这个类。对于 Web 应用程序，这不是要使用的类。此类非常适合"脱机"应用程序，但是当您在IIS服务器上使用此类时，它将尝试在服务器上打开弹出窗口，但它不会允许它。
我使用的类：GoogleAuthorizationCodeFlow
using Google.Apis.Analytics.v3;
using Google.Apis.Auth.OAuth2;
using Google.Apis.Auth.OAuth2.Flows;
using Google.Apis.Auth.OAuth2.Requests;
using Google.Apis.Auth.OAuth2.Web;
using Google.Apis.Services;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Web;
namespace GoogleOauth2DemoWebApp
{
public class GoogleOauth
{
public AnalyticsService Handle(string _userId, string _connectionString, string _googleRedirectUri, string _applicationName, string[] _scopes)
{
try
{
string UserId = _userId;//The user ID wil be for examlpe the users gmail address.
AnalyticsService service;
GoogleAuthorizationCodeFlow flow;
//use extended class to create google authorization code flow
flow = new ForceOfflineGoogleAuthorizationCodeFlow(new GoogleAuthorizationCodeFlow.Initializer
{
DataStore = new DbDataStore(_connectionString),//DataStore class to save the token in a SQL database.
ClientSecrets = new ClientSecrets { ClientId = "XXX-YOUR CLIENTID-XXX", ClientSecret = "XXX-YOURCLIENTSECRET-XXX" },
Scopes = _scopes,
});
var uri = HttpContext.Current.Request.Url.ToString();
string redirecturi = _googleRedirectUri;//This is the redirect URL set in google developer console.
var code = HttpContext.Current.Request["code"];
if (code != null)
{
var token = flow.ExchangeCodeForTokenAsync(UserId, code,
uri.Substring(0, uri.IndexOf("?")), CancellationToken.None).Result;
var test = HttpContext.Current.Request["state"];
// Extract the right state.
var oauthState = AuthWebUtility.ExtracRedirectFromState(
flow.DataStore, UserId, HttpContext.Current.Request["state"]).Result;
HttpContext.Current.Response.Redirect(oauthState);
}
else
{
var result = new AuthorizationCodeWebApp(flow, redirecturi, uri).AuthorizeAsync(UserId,
CancellationToken.None).Result;
if (result.RedirectUri != null)
{
// Redirect the user to the authorization server.
HttpContext.Current.Response.Redirect(result.RedirectUri);
}
else
{
// The data store contains the user credential, so the user has been already authenticated.
service = new AnalyticsService(new BaseClientService.Initializer()
{
HttpClientInitializer = result.Credential,
ApplicationName = _applicationName
});
return service;
}
}
return null;
}
catch (Exception ex)
{
throw ex;
}
}
internal class ForceOfflineGoogleAuthorizationCodeFlow : GoogleAuthorizationCodeFlow
{
public ForceOfflineGoogleAuthorizationCodeFlow(GoogleAuthorizationCodeFlow.Initializer initializer) : base(initializer) { }
public override AuthorizationCodeRequestUrl CreateAuthorizationCodeRequest(string redirectUri)
{
var ss = new Google.Apis.Auth.OAuth2.Requests.GoogleAuthorizationCodeRequestUrl(new Uri(AuthorizationServerUrl));
ss.AccessType = "offline";
ss.ApprovalPrompt = "force";
ss.ClientId = ClientSecrets.ClientId;
ss.Scope = string.Join(" ", Scopes);
ss.RedirectUri = redirectUri;
return ss;
}
};
}
}
我还使用数据存储类。 将令牌保存到服务器上的文件中不是最佳做法。我使用了一个SQL数据库。
数据存储类的示例。它会为你做一个表格，不是最好的方法，但测试足够好。
using Google.Apis.Json;
using Google.Apis.Util.Store;
using System;
using System.Collections.Generic;
using System.Data.SqlClient;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace GoogleOauth2DemoWebApp
{
public class DbDataStore : IDataStore
{
readonly string connectionString;
public string ConnectionString { get { return connectionString; } }
private Boolean _ConnectionExists { get; set; }
public Boolean connectionExists { get { return _ConnectionExists; } }
/// <summary>
/// Constructs a new file data store with the specified folder. This folder is created (if it doesn't exist
/// yet) under the current directory
/// </summary>
/// <param name="folder">Folder name</param>
public DbDataStore(String _connectionString)
{
connectionString = _connectionString;
SqlConnection myConnection = this.connectdb(); // Opens a connection to the database.
if (_ConnectionExists)
{
// check if the Table Exists;
try
{
SqlDataReader myReader = null;
SqlCommand myCommand = new SqlCommand("select 1 from GoogleUser where 1 = 0",
myConnection);
myReader = myCommand.ExecuteReader();
while (myReader.Read())
{
var hold = myReader["Column1"];
}
}
catch
{
// table doesn't exist we create it
SqlCommand myCommand = new SqlCommand("CREATE TABLE [dbo].[GoogleUser]( " +
" [username] [nvarchar](4000) NOT NULL," +
" [RefreshToken] [nvarchar](4000) NOT NULL," +
" [Userid] [nvarchar](4000) NOT NULL" +
" ) ON [PRIMARY]", myConnection);
myCommand.ExecuteNonQuery();
}
}
myConnection.Close();
}
/// <summary>
/// Stores the given value for the given key. It creates a new file (named <see cref="GenerateStoredKey"/>) in
/// <see cref="FolderPath"/>.
/// </summary>
/// <typeparam name="T">The type to store in the data store</typeparam>
/// <param name="key">The key</param>
/// <param name="value">The value to store in the data store</param>
public Task StoreAsync<T>(string key, T value)
{
if (string.IsNullOrEmpty(key))
{
throw new ArgumentException("Key MUST have a value");
}
var serialized = NewtonsoftJsonSerializer.Instance.Serialize(value);
SqlConnection myConnection = this.connectdb();
if (!_ConnectionExists)
{
throw new Exception("Not connected to the database");
}
// Try and find the Row in the DB.
using (SqlCommand command = new SqlCommand("select Userid from GoogleUser where UserName = @username", myConnection))
{
command.Parameters.AddWithValue("@username", key);
string hold = null;
SqlDataReader myReader = command.ExecuteReader();
while (myReader.Read())
{
hold = myReader["Userid"].ToString();
}
myReader.Close();
if (hold == null)
{
try
{
// New User we insert it into the database
string insertString = "INSERT INTO [dbo].[GoogleUser] ([username],[RefreshToken],[Userid]) " +
" VALUES (@key,@value,'1' )";
SqlCommand commandins = new SqlCommand(insertString, myConnection);
commandins.Parameters.AddWithValue("@key", key);
commandins.Parameters.AddWithValue("@value", serialized);
commandins.ExecuteNonQuery();
}
catch (Exception ex)
{
throw new Exception("Error inserting new row: " + ex.Message);
}
}
else
{
try
{
// Existing User We update it
string insertString = "update [dbo].[GoogleUser] " +
" set [RefreshToken] = @value " +
" where username = @key";
SqlCommand commandins = new SqlCommand(insertString, myConnection);
commandins.Parameters.AddWithValue("@key", key);
commandins.Parameters.AddWithValue("@value", serialized);
commandins.ExecuteNonQuery();
}
catch (Exception ex)
{
throw new Exception("Error updating user: " + ex.Message);
}
}
}
myConnection.Close();
return TaskEx.Delay(0);
}
/// <summary>
/// Deletes the given key. It deletes the <see cref="GenerateStoredKey"/> named file in <see cref="FolderPath"/>.
/// </summary>
/// <param name="key">The key to delete from the data store</param>
public Task DeleteAsync<T>(string key)
{
if (string.IsNullOrEmpty(key))
{
throw new ArgumentException("Key MUST have a value");
}
SqlConnection myConnection = this.connectdb();
if (!_ConnectionExists)
{
throw new Exception("Not connected to the database");
}
// Deletes the users data.
string deleteString = "delete from [dbo].[GoogleUser] " +
"where username = @key";
SqlCommand commandins = new SqlCommand(deleteString, myConnection);
commandins.Parameters.AddWithValue("@key", key);
commandins.ExecuteNonQuery();
myConnection.Close();
return TaskEx.Delay(0);
}
/// <summary>
/// Returns the stored value for the given key or <c>null</c> if the matching file (<see cref="GenerateStoredKey"/>
/// in <see cref="FolderPath"/> doesn't exist.
/// </summary>
/// <typeparam name="T">The type to retrieve</typeparam>
/// <param name="key">The key to retrieve from the data store</param>
/// <returns>The stored object</returns>
public Task<T> GetAsync<T>(string key)
{
//Key is the user string sent with AuthorizeAsync
if (string.IsNullOrEmpty(key))
{
throw new ArgumentException("Key MUST have a value");
}
TaskCompletionSource<T> tcs = new TaskCompletionSource<T>();
// Note: create a method for opening the connection.
SqlConnection myConnection = new SqlConnection(this.ConnectionString);
myConnection.Open();
// Try and find the Row in the DB.
using (SqlCommand command = new SqlCommand("select RefreshToken from GoogleUser where UserName = @username;", myConnection))
{
command.Parameters.AddWithValue("@username", key);
string RefreshToken = null;
SqlDataReader myReader = command.ExecuteReader();
while (myReader.Read())
{
RefreshToken = myReader["RefreshToken"].ToString();
}
if (RefreshToken == null)
{
// we don't have a record so we request it of the user.
tcs.SetResult(default(T));
}
else
{
try
{
// we have it we use that.
tcs.SetResult(NewtonsoftJsonSerializer.Instance.Deserialize<T>(RefreshToken));
}
catch (Exception ex)
{
tcs.SetException(ex);
}
}
}
return tcs.Task;
}
/// <summary>
/// Clears all values in the data store. This method deletes all files in <see cref="FolderPath"/>.
/// </summary>
public Task ClearAsync()
{
SqlConnection myConnection = this.connectdb();
if (!_ConnectionExists)
{
throw new Exception("Not connected to the database");
}
// Removes all data from the Table.
string truncateString = "truncate table [dbo].[GoogleUser] ";
SqlCommand commandins = new SqlCommand(truncateString, myConnection);
commandins.ExecuteNonQuery();
myConnection.Close();
return TaskEx.Delay(0);
}
/// <summary>Creates a unique stored key based on the key and the class type.</summary>
/// <param name="key">The object key</param>
/// <param name="t">The type to store or retrieve</param>
public static string GenerateStoredKey(string key, Type t)
{
return string.Format("{0}-{1}", t.FullName, key);
}
//Handel's creating the connection to the database
private SqlConnection connectdb()
{
SqlConnection myConnection = null;
try
{
myConnection = new SqlConnection(this.ConnectionString);
try
{
myConnection.Open();
// ensuring that we are able to make a connection to the database.
if (myConnection.State == System.Data.ConnectionState.Open)
{
_ConnectionExists = true;
}
else
{
throw new ArgumentException("Error unable to open connection to the database.");
}
}
catch (Exception ex)
{
throw new ArgumentException("Error opening Connection to the database: " + ex.Message);
}
}
catch (Exception ex)
{
throw new ArgumentException("Error creating Database Connection: " + ex.Message);
}
return myConnection;
}
}
}
使用该类：
GoogleOauth g = new GoogleOauth();
AnalyticsService service = g.Handle(userEmailAddress,
connectionString, redirectUrl,
"YOURAPLICATIONNAME",
new[] {AnalyticsService.Scope.AnalyticsReadonly});
DataResource.RealtimeResource.GetRequest request = service.Data.Realtime.Get(String.Format("ga:{0}", profileId), "rt:activeUsers");
RealtimeData feed = request.Execute();
如果人们感兴趣，我可以将示例项目上传到github。