如果我已经拥有Access Token的值,如何创建UserCredential的实例？

Question

所以我有这个代码
我的问题是如果我已经通过OAuth验证了如何配置UserCredential？

目前的情况是代码将显示另一个重定向到谷歌的登录页面.由于我已经使用asp.net MVC通过OAuth进行了身份验证,我已经拥有令牌如何摆脱GoogleWebAuthorizationBroker并直接传递令牌？

string[] scopes = new string[] {PlusService.Scope.PlusLogin,
                                             PlusService.Scope.UserinfoEmail,
                                             PlusService.Scope.UserinfoProfile};

UserCredential credential = 
GoogleWebAuthorizationBroker.AuthorizeAsync(new ClientSecrets
{
    ClientId = "xxx.apps.googleusercontent.com",
    ClientSecret = "xxxx"
},
    scopes,
    Environment.UserName,
    CancellationToken.None,
    new FileDataStore("Store")).Result;

PlusService service = new PlusService(new BaseClientService.Initializer()
{
    HttpClientInitializer = credential,
    ApplicationName = "ArcaneChatV2",
});

PeopleResource.ListRequest listPeople = service.People.List("me", PeopleResource.ListRequest.CollectionEnum.Visible);
listPeople.MaxResults = 10;
PeopleFeed peopleFeed = listPeople.Execute();
var people = new List<Person>();

我对这种东西不熟悉.

Answer 1

假设您已经拥有令牌,则可以执行以下操作

string[] scopes = new string[] {
    PlusService.Scope.PlusLogin,
    PlusService.Scope.UserinfoEmail,
    PlusService.Scope.UserinfoProfile
};

var flow = new GoogleAuthorizationCodeFlow(new GoogleAuthorizationCodeFlow.Initializer
{
    ClientSecrets = new ClientSecrets
    {
        ClientId = "xxx.apps.googleusercontent.com",
        ClientSecret = "xxxx"
    },
    Scopes = scopes,
    DataStore = new FileDataStore("Store")
});

var token = new TokenResponse { 
    AccessToken = "[your_access_token_here]",
    RefreshToken = "[your_refresh_token_here]"
};

var credential = new UserCredential(flow, Environment.UserName, token); 

然后,您可以将凭据传递给服务的初始化程序

参考Google API客户端库> .NET> OAuth 2.0

Answer 2

我们也可以直接从访问令牌创建GoogleCredential并使用它。UserCredential我只是认为这可能对某人有帮助。这是初始化的代码片段GmailService：

GoogleCredential cred = GoogleCredential.FromAccessToken(accessToken);
GmailService service = new GmailService(new BaseClientService.Initializer {HttpClientInitializer = cred});