桌面应用程序的多个 Google 访问权限
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【中文标题】桌面应用程序的多个 Google 访问权限【英文标题】:Multiple Google access permissions for a desktop application 【发布时间】:2015-09-05 12:01:41 【问题描述】:我正在用 C# 编写一个桌面应用程序,它应该能够访问 Google Apps“帐户”上的所有用户,并为每个用户检索日历事件。我已将日历 API 和 Admin SDK 添加到我的“项目”中。
这两种方法(如下)都可以单独使用,但是当我想为这两个 API 授权我的应用时,我会收到以下权限错误。
权限不足 [403]
invalid_grant", 描述:"令牌已被吊销。
这让我想知道是否可以在应用程序启动时请求所有权限,而不是单独授权“功能”?
static string[] CalendarScopes = CalendarService.Scope.CalendarReadonly ;
static string[] DirectoryScopes = DirectoryService.Scope.AdminDirectoryUserReadonly ;
private static void GoogleCalendar()
UserCredential credential;
using (var stream = new FileStream("client_secret.json", FileMode.Open, FileAccess.Read))
string credPath = Environment.GetFolderPath(Environment.SpecialFolder.Personal);
credPath = Path.Combine(credPath, ".credentials");
credential = GoogleWebAuthorizationBroker.AuthorizeAsync(
GoogleClientSecrets.Load(stream).Secrets,
CalendarScopes,
"user",
CancellationToken.None,
new FileDataStore(credPath, true)).Result;
// Create Google Calendar API service.
var service = new CalendarService(new BaseClientService.Initializer()
HttpClientInitializer = credential,
ApplicationName = ApplicationName,
);
// Define parameters of request.
EventsResource.ListRequest request = service.Events.List("primary");
request.TimeMin = DateTime.Now;
request.ShowDeleted = false;
request.SingleEvents = true;
//request.MaxResults = 10;
request.OrderBy = EventsResource.ListRequest.OrderByEnum.StartTime;
// List events.
Events events = request.Execute();
Console.WriteLine("Upcoming events:");
if (events.Items != null && events.Items.Count > 0)
foreach (var eventItem in events.Items)
string when = eventItem.Start.DateTime.ToString();
if (String.IsNullOrEmpty(when))
when = eventItem.Start.Date;
Console.WriteLine("0 (1)", eventItem.Summary, when);
else
Console.WriteLine("No upcoming events found.");
Console.Read();
private static void GoogleDirectory()
UserCredential credential;
using (var stream =
new FileStream("client_secret.json", FileMode.Open, FileAccess.Read))
string credPath = Environment.GetFolderPath(
Environment.SpecialFolder.Personal);
credPath = Path.Combine(credPath, ".credentials");
credential = GoogleWebAuthorizationBroker.AuthorizeAsync(
GoogleClientSecrets.Load(stream).Secrets,
DirectoryScopes,
"user",
CancellationToken.None,
new FileDataStore(credPath, true)).Result;
Console.WriteLine("Credential file saved to: " + credPath);
// Create Directory API service.
var service = new DirectoryService(new BaseClientService.Initializer()
HttpClientInitializer = credential,
ApplicationName = ApplicationName,
);
// Define parameters of request.
UsersResource.ListRequest request = service.Users.List();
request.Customer = "my_customer";
request.MaxResults = 10;
request.OrderBy = UsersResource.ListRequest.OrderByEnum.Email;
// List users.
IList<User> users = null;
try
users = request.Execute().UsersValue;
catch (Exception ex)
throw;
Console.WriteLine("Users:");
if (users != null && users.Count > 0)
foreach (var userItem in users)
Console.WriteLine("0 (1)", userItem.PrimaryEmail,
userItem.Name.FullName);
else
Console.WriteLine("No users found.");
Console.Read();
【问题讨论】:
您遇到什么错误?是的,您可以请求具有应用程序所需的所有范围的访问令牌。虽然不推荐这样做。 我已经更新了我的问题,但有例外。为什么不建议对多个范围使用访问令牌? 【参考方案1】:尤里卡!我想通了,怎么解决这个问题,其实很简单。
解决方案是“合并”这些方法。这意味着,我只需使用访问令牌检查一次凭据。我还将目录添加到范围数组中。
static string[] Scopes = CalendarService.Scope.CalendarReadonly, DirectoryService.Scope.AdminDirectoryUserReadonly ;
private static void GoogleThis()
UserCredential credential;
using (var stream = new FileStream("client_secret.json", FileMode.Open, FileAccess.Read))
string credPath = Environment.GetFolderPath(Environment.SpecialFolder.Personal);
credPath = Path.Combine(credPath, ".credentials");
credential = GoogleWebAuthorizationBroker.AuthorizeAsync(
GoogleClientSecrets.Load(stream).Secrets,
Scopes,
"user",
CancellationToken.None,
new FileDataStore(credPath, true)).Result;
// Create Google Calendar API service.
var eventService = new CalendarService(new BaseClientService.Initializer()
HttpClientInitializer = credential,
ApplicationName = ApplicationName,
);
// Define parameters of request.
EventsResource.ListRequest eventRequest = eventService.Events.List("primary");
eventRequest.TimeMin = DateTime.Now;
eventRequest.ShowDeleted = false;
eventRequest.SingleEvents = true;
//request.MaxResults = 10;
eventRequest.OrderBy = EventsResource.ListRequest.OrderByEnum.StartTime;
// List events.
Events events = eventRequest.Execute();
Console.WriteLine("Upcoming events:");
if (events.Items != null && events.Items.Count > 0)
foreach (var eventItem in events.Items)
string when = eventItem.Start.DateTime.ToString();
if (String.IsNullOrEmpty(when))
when = eventItem.Start.Date;
Console.WriteLine("0 (1)", eventItem.Summary, when);
else
Console.WriteLine("No upcoming events found.");
// Create Directory API service.
var dirService = new DirectoryService(new BaseClientService.Initializer()
HttpClientInitializer = credential,
ApplicationName = ApplicationName,
);
// Define parameters of request.
UsersResource.ListRequest dirRequest = dirService.Users.List();
dirRequest.Customer = "my_customer";
dirRequest.MaxResults = 10;
dirRequest.OrderBy = UsersResource.ListRequest.OrderByEnum.Email;
// List users.
IList<User> users = null;
try
users = dirRequest.Execute().UsersValue;
Console.WriteLine("Users:");
if (users != null && users.Count > 0)
foreach (var userItem in users)
Console.WriteLine("0 (1)", userItem.PrimaryEmail,
userItem.Name.FullName);
else
Console.WriteLine("No users found.");
catch (Exception ex)
throw;
【讨论】:
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