我可以使用YouTube Data API添加注释，使用下面来自YouTube Data API示例代码的代码。
但是每次打开浏览器，我都要登录并选择我的谷歌帐户。我该如何更改，以便保存登录并在不中断的情况下执行程序?
/**
* Sample Java code for youtube.commentThreads.insert
* See instructions for running these code samples locally:
* https://developers.google.com/explorer-help/guides/code_samples#java
*/
import com.google.api.client.auth.oauth2.Credential;
import com.google.api.client.extensions.java6.auth.oauth2.AuthorizationCodeInstalledApp;
import com.google.api.client.extensions.jetty.auth.oauth2.LocalServerReceiver;
import com.google.api.client.googleapis.auth.oauth2.GoogleAuthorizationCodeFlow;
import com.google.api.client.googleapis.auth.oauth2.GoogleClientSecrets;
import com.google.api.client.googleapis.javanet.GoogleNetHttpTransport;
import com.google.api.client.googleapis.json.GoogleJsonResponseException;
import com.google.api.client.http.javanet.NetHttpTransport;
import com.google.api.client.json.JsonFactory;
import com.google.api.client.json.jackson2.JacksonFactory;
import com.google.api.services.youtube.YouTube;
import com.google.api.services.youtube.model.Comment;
import com.google.api.services.youtube.model.CommentSnippet;
import com.google.api.services.youtube.model.CommentThread;
import com.google.api.services.youtube.model.CommentThreadSnippet;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.security.GeneralSecurityException;
import java.util.Arrays;
import java.util.Collection;
public class ApiExample {
private static final String CLIENT_SECRETS= "client_secret.json";
private static final Collection<String> SCOPES =
Arrays.asList("https://www.googleapis.com/auth/youtube.force-ssl");
private static final String APPLICATION_NAME = "API code samples";
private static final JsonFactory JSON_FACTORY = JacksonFactory.getDefaultInstance();
/**
* Create an authorized Credential object.
*
* @return an authorized Credential object.
* @throws IOException
*/
public static Credential authorize(final NetHttpTransport httpTransport) throws IOException {
// Load client secrets.
InputStream in = ApiExample.class.getResourceAsStream(CLIENT_SECRETS);
GoogleClientSecrets clientSecrets =
GoogleClientSecrets.load(JSON_FACTORY, new InputStreamReader(in));
// Build flow and trigger user authorization request.
GoogleAuthorizationCodeFlow flow =
new GoogleAuthorizationCodeFlow.Builder(httpTransport, JSON_FACTORY, clientSecrets, SCOPES)
.build();
Credential credential =
new AuthorizationCodeInstalledApp(flow, new LocalServerReceiver()).authorize("user");
return credential;
}
/**
* Build and return an authorized API client service.
*
* @return an authorized API client service
* @throws GeneralSecurityException, IOException
*/
public static YouTube getService() throws GeneralSecurityException, IOException {
final NetHttpTransport httpTransport = GoogleNetHttpTransport.newTrustedTransport();
Credential credential = authorize(httpTransport);
return new YouTube.Builder(httpTransport, JSON_FACTORY, credential)
.setApplicationName(APPLICATION_NAME)
.build();
}
/**
* Call function to create an API service object. Define and
* execute API request. Print API response.
*
* @throws GeneralSecurityException, IOException, GoogleJsonResponseException
*/
public static void main(String[] args)
throws GeneralSecurityException, IOException, GoogleJsonResponseException {
YouTube youtubeService = getService();
// Define the CommentThread object, which will be uploaded as the request body.
CommentThread commentThread = new CommentThread();
// Add the snippet object property to the CommentThread object.
CommentThreadSnippet snippet = new CommentThreadSnippet();
Comment topLevelComment = new Comment();
CommentSnippet commentSnippet = new CommentSnippet();
commentSnippet.setTextOriginal("This is the start of a comment thread.");
topLevelComment.setSnippet(commentSnippet);
snippet.setTopLevelComment(topLevelComment);
snippet.setVideoId("gQquhwSy-_w");
commentThread.setSnippet(snippet);
// Define and execute the API request
YouTube.CommentThreads.Insert request = youtubeService.commentThreads()
.insert("snippet", commentThread);
CommentThread response = request.execute();
System.out.println(response);
}
}
Google提供了一组示例程序，用于举例说明其用于Java的客户端库(也用于其他一些实现编程语言/环境)的用法。
在这里，您可以找到实现用户凭证数据持久化的源文件Auth.java:
/**
* Shared class used by every sample. Contains methods for authorizing a user and caching credentials.
*/
public class Auth {
/**
* Define a global instance of the HTTP transport.
*/
public static final HttpTransport HTTP_TRANSPORT = new NetHttpTransport();
/**
* Define a global instance of the JSON factory.
*/
public static final JsonFactory JSON_FACTORY = new JacksonFactory();
/**
* This is the directory that will be used under the user's home directory where OAuth tokens will be stored.
*/
private static final String CREDENTIALS_DIRECTORY = ".oauth-credentials";
/**
* Authorizes the installed application to access user's protected data.
*
* @param scopes list of scopes needed to run youtube upload.
* @param credentialDatastore name of the credential datastore to cache OAuth tokens
*/
public static Credential authorize(List<String> scopes, String credentialDatastore) throws IOException {
// Load client secrets.
Reader clientSecretReader = new InputStreamReader(Auth.class.getResourceAsStream("/client_secrets.json"));
GoogleClientSecrets clientSecrets = GoogleClientSecrets.load(JSON_FACTORY, clientSecretReader);
// Checks that the defaults have been replaced (Default = "Enter X here").
if (clientSecrets.getDetails().getClientId().startsWith("Enter")
|| clientSecrets.getDetails().getClientSecret().startsWith("Enter ")) {
System.out.println(
"Enter Client ID and Secret from https://console.developers.google.com/project/_/apiui/credential "
+ "into src/main/resources/client_secrets.json");
System.exit(1);
}
// This creates the credentials datastore at ~/.oauth-credentials/${credentialDatastore}
FileDataStoreFactory fileDataStoreFactory = new FileDataStoreFactory(new File(System.getProperty("user.home") + "/" + CREDENTIALS_DIRECTORY));
DataStore<StoredCredential> datastore = fileDataStoreFactory.getDataStore(credentialDatastore);
GoogleAuthorizationCodeFlow flow = new GoogleAuthorizationCodeFlow.Builder(
HTTP_TRANSPORT, JSON_FACTORY, clientSecrets, scopes).setCredentialDataStore(datastore)
.build();
// Build the local server and bind it to port 8080
LocalServerReceiver localReceiver = new LocalServerReceiver.Builder().setPort(8080).build();
// Authorize.
return new AuthorizationCodeInstalledApp(flow, localReceiver).authorize("user");
}
}
您可能会发现Auth类的许多相关用例，例如，在data子文件夹中，程序CommentThreads.java。