如何使用Google OAuth 2.0配置授權服務對象

在以下鏈接中有代碼可以使用OAuth 2.0訪問Google日曆API。不幸的是，它使用草案10客戶端庫，這顯然已被棄用。如何使用Google OAuth 2.0配置授權服務對象

https://developers.google.com/google-apps/calendar/instantiate

最新的客戶端庫是谷歌的API-Java的客戶端1.12.0-β。從草案10客戶端庫開始，我可以做出很多改變，但我無法確定如何爲當前客戶端庫重寫此代碼。

不贊成使用的代碼如下所示。

import com.google.api.client.auth.oauth2.draft10.AccessTokenResponse; 
import com.google.api.client.googleapis.auth.oauth2.draft10.GoogleAccessProtectedResource; 
import com.google.api.client.googleapis.auth.oauth2.draft10.GoogleAccessTokenRequest.GoogleAuthorizationCodeGrant; 
import com.google.api.client.googleapis.auth.oauth2.draft10.GoogleAuthorizationRequestUrl; 

import com.google.api.client.http.HttpTransport; 
import com.google.api.client.http.javanet.NetHttpTransport; 
import com.google.api.client.json.jackson.JacksonFactory; 

import com.google.api.services.calendar.Calendar; 

import java.io.BufferedReader; 
import java.io.IOException; 
import java.io.InputStreamReader; 

... 

public void setUp() throws IOException { 
    HttpTransport httpTransport = new NetHttpTransport(); 
    JacksonFactory jsonFactory = new JacksonFactory(); 

    // The clientId and clientSecret are copied from the API Access tab on 
    // the Google APIs Console 
    String clientId = "YOUR_CLIENT_ID"; 
    String clientSecret = "YOUR_CLIENT_SECRET"; 

    // Or your redirect URL for web based applications. 
    String redirectUrl = "urn:ietf:wg:oauth:2.0:oob"; 
    String scope = "https://www.googleapis.com/auth/calendar"; 

    // Step 1: Authorize --> 
    String authorizationUrl = new GoogleAuthorizationRequestUrl(clientId, redirectUrl, scope) 
    .build(); 

    // Point or redirect your user to the authorizationUrl. 
    System.out.println("Go to the following link in your browser:"); 
    System.out.println(authorizationUrl); 

    // Read the authorization code from the standard input stream. 
    BufferedReader in = new BufferedReader(new InputStreamReader(System.in)); 
    System.out.println("What is the authorization code?"); 
    String code = in.readLine(); 
    // End of Step 1 <-- 

    // Step 2: Exchange --> 
    AccessTokenResponse response = new GoogleAuthorizationCodeGrant(httpTransport,  jsonFactory, 
    clientId, clientSecret, code, redirectUrl).execute(); 
    // End of Step 2 <-- 

    GoogleAccessProtectedResource accessProtectedResource = new GoogleAccessProtectedResource(
    response.accessToken, httpTransport, jsonFactory, clientId, clientSecret, 
    response.refreshToken); 

    Calendar service = new Calendar(httpTransport, accessProtectedResource, jsonFactory); 
    service.setApplicationName("YOUR_APPLICATION_NAME"); 
    ... 
} 
...

任何人都可以告訴如何重寫此代碼，以便它可以與當前客戶端庫一起使用嗎？

來源

2012-11-13 Laurence