Java tutorial
package GoogleAPI; /* * Copyright (c) 2012 Google Inc. * * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except * in compliance with the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software distributed under the License * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express * or implied. See the License for the specific language governing permissions and limitations under * the License. */ import com.google.api.client.http.FileContent; import com.google.api.services.drive.Drive; import com.google.api.services.drive.model.File; import com.google.api.services.drive.model.FileList; 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.media.MediaHttpUploader; import com.google.api.client.http.HttpTransport; import com.google.api.client.json.JsonFactory; import com.google.api.client.json.jackson2.JacksonFactory; import com.google.api.client.util.Preconditions; import com.google.api.client.util.store.DataStoreFactory; import com.google.api.client.util.store.FileDataStoreFactory; import com.google.api.services.drive.DriveScopes; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.util.ArrayList; import java.util.Collections; import java.util.List; /** * A sample application that runs multiple requests against the Drive API. The requests this sample * makes are: * <ul> * <li>Does a resumable media upload</li> * <li>Updates the uploaded file by renaming it</li> * <li>Does a resumable media download</li> * <li>Does a direct media upload</li> * <li>Does a direct media download</li> * </ul> * * @author rmistry@google.com (Ravi Mistry) */ public class DriveService { /** * Be sure to specify the name of your application. If the application name is {@code null} or * blank, the application will log a warning. Suggested format is "MyCompany-ProductName/1.0". */ private static final String APPLICATION_NAME = "MrThien"; /** Directory to store user credentials. */ private static final java.io.File DATA_STORE_DIR = new java.io.File(System.getProperty("user.home"), ".store/drive_delegation"); /** * Global instance of the {@link DataStoreFactory}. The best practice is to make it a single * globally shared instance across your application. */ private static FileDataStoreFactory dataStoreFactory; /** Global instance of the HTTP transport. */ private static HttpTransport httpTransport; /** Global instance of the JSON factory. */ private static final JsonFactory JSON_FACTORY = JacksonFactory.getDefaultInstance(); /** Global Drive API client. */ private static Drive service; /** Authorizes the installed application to access user's protected data. */ private static Credential authorize() throws Exception { // load client secrets InputStream in = DriveService.class.getResourceAsStream("/client_secret.json"); GoogleClientSecrets clientSecrets = GoogleClientSecrets.load(JSON_FACTORY, new InputStreamReader(in)); if (clientSecrets.getDetails().getClientId().startsWith("Enter") || clientSecrets.getDetails().getClientSecret().startsWith("Enter ")) { System.out.println("Enter Client ID and Secret from https://code.google.com/apis/console/?api=drive " + "into drive-cmdline-sample/src/main/resources/client_secrets.json"); System.exit(1); } // set up authorization code flow GoogleAuthorizationCodeFlow flow = new GoogleAuthorizationCodeFlow.Builder(httpTransport, JSON_FACTORY, clientSecrets, Collections.singleton(DriveScopes.DRIVE_FILE)).setDataStoreFactory(dataStoreFactory) .build(); // authorize return new AuthorizationCodeInstalledApp(flow, new LocalServerReceiver()).authorize("user"); } public static void main(String UPLOAD_FILE_PATH, String ContentType) { Preconditions.checkArgument(!UPLOAD_FILE_PATH.startsWith("Enter "), "Please enter the upload file path and download directory in %s", DriveService.class); try { java.io.File UPLOAD_FILE = new java.io.File(UPLOAD_FILE_PATH); service = getDriveService(); // run commands View.header1("Starting Resumable Media Upload"); File uploadedFile = uploadFile(true, UPLOAD_FILE, ContentType); /* View.header1("Starting Simple Media Upload"); uploadedFile = uploadFile(true, UPLOAD_FILE, ContentType);*/ View.header1("Success!"); return; } catch (IOException e) { System.err.println(e.getMessage()); } catch (Throwable t) { t.printStackTrace(); } System.exit(1); } /** Uploads a file using either resumable or direct media upload. */ private static File uploadFile(boolean useDirectUpload, java.io.File UPLOAD_FILE, String ContentType) throws IOException { File fileMetadata = new File(); fileMetadata.setTitle(UPLOAD_FILE.getName()); FileContent mediaContent = new FileContent(ContentType, UPLOAD_FILE); Drive.Files.Insert insert = service.files().insert(fileMetadata, mediaContent); MediaHttpUploader uploader = insert.getMediaHttpUploader(); uploader.setDirectUploadEnabled(useDirectUpload); uploader.setProgressListener(new FileUploadProgressListener()); return insert.execute(); } public static List<String> searchFile(String name) throws Exception { service = getDriveService(); String pageToken = ""; List<String> files = new ArrayList<String>(); do { FileList result = service.files().list().setQ("title contains '" + name + "'").setSpaces("drive") .execute(); for (File file : result.getItems()) files.add(file.getTitle()); pageToken = result.getNextPageToken(); } while (pageToken != null); return files; } public static Drive getDriveService() throws Exception { Drive drive; httpTransport = GoogleNetHttpTransport.newTrustedTransport(); dataStoreFactory = new FileDataStoreFactory(DATA_STORE_DIR); Credential credential = authorize(); // // set up the global Drive instance drive = new Drive.Builder(httpTransport, JSON_FACTORY, credential).setApplicationName(APPLICATION_NAME) .build(); return drive; } }