如何通过 Oauth2 身份验证使用 Google Contacts API [英] How to use Google Contacts API via Oauth2 authentication
问题描述
我有以下代码可以使用谷歌日历 API (https://developer.google.com/google-apps/calendar/) 使用 OAuth2.它运作良好.
I have this below code to get calendar entries using the google Calendar API (https://developers.google.com/google-apps/calendar/) which uses OAuth2. It works well.
private IList<string> scopes = new List<string>();
private CalendarService calendarService;
private void InitializeCalendarService()
{
// Add the calendar specific scope to the scopes list
scopes.Add(CalendarService.Scopes.Calendar.GetStringValue());
// Display the header and initialize the sample
CommandLine.EnableExceptionHandling();
CommandLine.DisplayGoogleSampleHeader("Google.Api.Calendar.v3 Sample");
// Create the authenticator
//FullClientCredentials credentials = PromptingClientCredentials.EnsureFullClientCredentials();
var provider = new NativeApplicationClient(GoogleAuthenticationServer.Description);
FullClientCredentials credentials = new FullClientCredentials();
credentials.ClientId = "XYZ.apps.googleusercontent.com";
credentials.ClientSecret = "XYZ";
credentials.ApiKey = "XYZ";
provider.ClientIdentifier = credentials.ClientId;
provider.ClientSecret = credentials.ClientSecret;
OAuth2Authenticator<NativeApplicationClient> auth = new OAuth2Authenticator<NativeApplicationClient>(provider, GetAuthorization);
// Create the calendar service using an initializer instance
BaseClientService.Initializer initializer = new BaseClientService.Initializer();
initializer.Authenticator = auth;
calendarService = new CalendarService(initializer);
CalendarList list = calendarService.CalendarList.List().Execute();
// do something with the list .. the list is all good
}
public IAuthorizationState GetAuthorization(NativeApplicationClient client)
{
// You should use a more secure way of storing the key here as
// .NET applications can be disassembled using a reflection tool.
const string STORAGE = "google.samples.dotnet.calendar";
const string KEY = "s0mekey";
// Check if there is a cached refresh token available.
IAuthorizationState state = AuthorizationMgr.GetCachedRefreshToken(STORAGE, KEY);
if ((state != null))
{
try
{
client.RefreshToken(state);
return state;
// we are done
}
catch (DotNetOpenAuth.Messaging.ProtocolException ex)
{
CommandLine.WriteError("Using an existing refresh token failed: " + ex.Message);
CommandLine.WriteLine();
}
}
// Retrieve the authorization from the user
string[] array = new string[scopes.Count];
scopes.CopyTo(array,0);
state = AuthorizationMgr.RequestNativeAuthorization(client, array);
AuthorizationMgr.SetCachedRefreshToken(STORAGE, KEY, state);
return state;
}
如何使用类似的 OAuth2Authenticator 来获取联系人?
How can I use the similar OAuth2Authenticator to fetch Contacts?
我可以使用以下代码获取联系人，但它不是无密码的，我需要使用 Oath2 使其正常工作.下面的示例使用 Gdata 联系人 api v2.我可以看到我可以通过 OAuth2Authenticator，但我不确定如何正确执行(我无法在 google 站点上看到 C# 中的任何有效示例)并根据用户选择的内容获取访问代码.我看不到如何将 OAuth2Authenticator 与联系人 api v3 (https://developers.google.com/google-apps/contacts/v3/)
I am able to fetch contacts using the below code, but its not password-less, I need to get it working using Oath2. The example below uses Gdata contacts api v2. I can see that i can pass through OAuth2Authenticator but im not exactly sure how to do it correctly (i cant see any valid examples in C# on the google site) and fetch the access code based on what the user is selecting. I cant see how to use OAuth2Authenticator with the contacts api v3 (https://developers.google.com/google-apps/contacts/v3/)
RequestSettings rsLoginInfo = new RequestSettings("", email,pwd);
rsLoginInfo.AutoPaging = true;
ContactsRequest cRequest = new ContactsRequest(rsLoginInfo);
// fetch contacts list
Feed<Contact> feedContacts = cRequest.GetContacts();
foreach (Contact gmailAddresses in feedContacts.Entries)
{
// Looping to read email addresses
foreach (EMail emailId in gmailAddresses.Emails)
{
lstContacts.Add(emailId.Address);
}
}
推荐答案
我最终通过在用户选择 Google 帐户并授予访问权限时让浏览器控件读取文档标题值来获取访问代码来完成此操作.
I ended up doing this by fetching the access code by having a browser control read the Document title value when the user selects the google account and grants access.
>
例如:
生成网址
RedirectURI = "urn:ietf:wg:oauth:2.0:oob"
OAuth2Parameters parameters = new OAuth2Parameters()
{
ClientId = clientId,
ClientSecret = clientSecret,
RedirectUri = redirectUri,
Scope = requiredScope
};
// Request authorization from the user (by opening a browser window):
string url = OAuthUtil.CreateOAuth2AuthorizationUrl(parameters);
var loginUri = new Uri(url);
// This form has browser control
GoogleLoginForm form = new GoogleLoginForm(loginUri, redirectUri);
var dr = form.ShowDialog();
if (dr == System.Windows.Forms.DialogResult.OK)
{
parameters.AccessCode = form.OAuthVerifierToken;
}
然后在 GoogleLoginForm 中:我们有一个浏览器控件和注册的 browserControl_Navigated 事件，然后执行以下操作.DocumentTitle 包含用于生成令牌的 AccessCode.
Then In GoogleLoginForm : We have a browser control and registered browserControl_Navigated event and the do the below. The DocumentTitle contains the AccessCode which is used to generate the token.
private void GoogleLoginForm_Load(object sender, EventArgs e)
{
wbGoogleLogin.Url = _loginUri;
}
private void wbGoogleLogin_Navigated(object sender, WebBrowserNavigatedEventArgs e)
{
string fullPath = e.Url.ToString();
WebBrowser control = sender as WebBrowser;
if (control != null && !string.IsNullOrEmpty(control.DocumentTitle) && control.DocumentTitle.Contains("Success code"))
{
_OAuthVerifierToken = control.DocumentTitle.Replace("Success code=","");
DialogResult = DialogResult.OK;
}
}
这样就可以在同一段代码中完成，而无需编写某种复杂的回调服务来将访问令牌读回我们的系统.
This way it can be done in the same piece of code, without having to write a complicated callback service of some sort to read the access token back into our system.
不确定为什么日历 API 内置了这个，而联系人 API 没有.
Not exactly sure why the calendar api has this built in, and the contacts API doesn't.
这篇关于如何通过 Oauth2 身份验证使用 Google Contacts API的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
