ASP.NET Core MVC Google 身份验证令牌

Question

我正在使用 ASP.NET Core 7.0 MVC。 我已按照 https://learn.microsoft.com/aspnet/core/security/authentication/social/google-logins 设置我的谷歌登录：

WebApplicationBuilder webApplicationBuilder = WebApplication.CreateBuilder(args);
ConfigurationManager configurationManager = webApplicationBuilder.Configuration;
IServiceCollection serviceDescriptors = webApplicationBuilder.Services;
serviceDescriptors.AddAuthentication(options => {
    options.DefaultScheme = CookieAuthenticationDefaults.AuthenticationScheme;
    options.DefaultChallengeScheme = GoogleDefaults.AuthenticationScheme;
})
.AddCookie()
.AddGoogle(googleOptions => {
    googleOptions.ClientId = webApplicationBuilder.Configuration["Authentication:Google:ClientId"];
    googleOptions.ClientSecret = webApplicationBuilder.Configuration["Authentication:Google:ClientSecret"];
    googleOptions.Scope.Add("CalendarService.Scope.CalendarReadonly");
    googleOptions.SaveTokens = true;
});

现在我需要像这样连接到 Google Calendar API：

GoogleCredential? cred = GoogleCredential.FromAccessToken(token);
CalendarService service = new CalendarService(new BaseClientService.Initializer {
    HttpClientInitializer = cred,
    ApplicationName = ApplicationName
});
EventsResource.ListRequest request = service.Events.List("primary");
request.ShowDeleted = false;
request.SingleEvents = true;
request.OrderBy = EventsResource.ListRequest.OrderByEnum.StartTime;
Events events;
events = request.Execute();

我搜索了很多资源，但我无法从登录中找到登录令牌，有人可以帮助我吗？

我想找到用户AccessToken来访问Google Calendar API。

Answer 1

如果您想获取访问令牌，可以添加保存令牌的选项，然后在 OnCreatingTicket 方法时获取它。

更多详情，可以参考以下代码：

 builder.Services.AddAuthentication(options =>
{
     options.DefaultChallengeScheme = "Google"; // Use the scheme name you've configured for Google authentication
}).AddGoogle("Google",googleOptions =>
{
    googleOptions.ClientId = " ";
    googleOptions.ClientSecret = " ";
    googleOptions.SaveTokens = true;

    googleOptions.Events = new OAuthEvents
    {
        OnCreatingTicket = context =>
       {

           var accessToken = context.AccessToken;
      
           //then you could store the access token inside the claims and use it later
           var identity = (ClaimsIdentity)context.Principal.Identity;
           identity.AddClaim(new Claim("access_token", accessToken));
           return Task.CompletedTask;

       }
    };
});

结果：