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UploadBasic.java
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UploadBasic.java
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// Copyright 2022 Google LLC
//
// 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.
// [START drive_upload_basic]
import com.google.api.client.googleapis.json.GoogleJsonResponseException;
import com.google.api.client.http.FileContent;
import com.google.api.client.http.HttpRequestInitializer;
import com.google.api.client.http.javanet.NetHttpTransport;
import com.google.api.client.json.gson.GsonFactory;
import com.google.api.services.drive.Drive;
import com.google.api.services.drive.DriveScopes;
import com.google.api.services.drive.model.File;
import com.google.auth.http.HttpCredentialsAdapter;
import com.google.auth.oauth2.GoogleCredentials;
import java.io.IOException;
import java.util.Arrays;
/* Class to demonstrate use of Drive insert file API */
public class UploadBasic {
/**
* Upload new file.
*
* @return Inserted file metadata if successful, {@code null} otherwise.
* @throws IOException if service account credentials file not found.
*/
public static String uploadBasic() throws IOException {
// Load pre-authorized user credentials from the environment.
// TODO(developer) - See https://developers.google.com/identity for
// guides on implementing OAuth2 for your application.
GoogleCredentials credentials = GoogleCredentials.getApplicationDefault()
.createScoped(Arrays.asList(DriveScopes.DRIVE_FILE));
HttpRequestInitializer requestInitializer = new HttpCredentialsAdapter(
credentials);
// Build a new authorized API client service.
Drive service = new Drive.Builder(new NetHttpTransport(),
GsonFactory.getDefaultInstance(),
requestInitializer)
.setApplicationName("Drive samples")
.build();
// Upload file photo.jpg on drive.
File fileMetadata = new File();
fileMetadata.setName("photo.jpg");
// File's content.
java.io.File filePath = new java.io.File("files/photo.jpg");
// Specify media type and file-path for file.
FileContent mediaContent = new FileContent("image/jpeg", filePath);
try {
File file = service.files().create(fileMetadata, mediaContent)
.setFields("id")
.execute();
System.out.println("File ID: " file.getId());
return file.getId();
} catch (GoogleJsonResponseException e) {
// TODO(developer) - handle error appropriately
System.err.println("Unable to upload file: " e.getDetails());
throw e;
}
}
}
// [END drive_upload_basic]