// Copyright 2018 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 calendar_quickstart] 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.http.javanet.NetHttpTransport; import com.google.api.client.json.JsonFactory; import com.google.api.client.json.jackson2.JacksonFactory; import com.google.api.client.util.DateTime; import com.google.api.client.util.store.FileDataStoreFactory; import com.google.api.services.calendar.Calendar; import com.google.api.services.calendar.CalendarScopes; import com.google.api.services.calendar.model.Event; import com.google.api.services.calendar.model.Events; import java.io.FileNotFoundException; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.security.GeneralSecurityException; import java.util.Collections; import java.util.List; public class CalendarQuickstart { private static final String APPLICATION_NAME = "Google Calendar API Java Quickstart"; private static final JsonFactory JSON_FACTORY = JacksonFactory.getDefaultInstance(); private static final String TOKENS_DIRECTORY_PATH = "tokens"; /** * Global instance of the scopes required by this quickstart. * If modifying these scopes, delete your previously saved tokens/ folder. */ private static final List<String> SCOPES = Collections.singletonList(CalendarScopes.CALENDAR_READONLY); private static final String CREDENTIALS_FILE_PATH = "/credentials.json"; /** * Creates an authorized Credential object. * @param HTTP_TRANSPORT The network HTTP Transport. * @return An authorized Credential object. * @throws IOException If the credentials.json file cannot be found. */ private static Credential getCredentials(final NetHttpTransport HTTP_TRANSPORT) throws IOException { // Load client secrets. InputStream in = CalendarQuickstart.class.getResourceAsStream(CREDENTIALS_FILE_PATH); if (in == null) { throw new FileNotFoundException("Resource not found: " + CREDENTIALS_FILE_PATH); } GoogleClientSecrets clientSecrets = GoogleClientSecrets.load(JSON_FACTORY, new InputStreamReader(in)); // Build flow and trigger user authorization request. GoogleAuthorizationCodeFlow flow = new GoogleAuthorizationCodeFlow.Builder( HTTP_TRANSPORT, JSON_FACTORY, clientSecrets, SCOPES) .setDataStoreFactory(new FileDataStoreFactory(new java.io.File(TOKENS_DIRECTORY_PATH))) .setAccessType("offline") .build(); LocalServerReceiver receiver = new LocalServerReceiver.Builder().setPort(8888).build(); return new AuthorizationCodeInstalledApp(flow, receiver).authorize("user"); } public static void main(String... args) throws IOException, GeneralSecurityException { // Build a new authorized API client service. final NetHttpTransport HTTP_TRANSPORT = GoogleNetHttpTransport.newTrustedTransport(); Calendar service = new Calendar.Builder(HTTP_TRANSPORT, JSON_FACTORY, getCredentials(HTTP_TRANSPORT)) .setApplicationName(APPLICATION_NAME) .build(); // List the next 10 events from the primary calendar. DateTime now = new DateTime(System.currentTimeMillis()); Events events = service.events().list("primary") .setMaxResults(10) .setTimeMin(now) .setOrderBy("startTime") .setSingleEvents(true) .execute(); List<Event> items = events.getItems(); if (items.isEmpty()) { System.out.println("No upcoming events found."); } else { System.out.println("Upcoming events"); for (Event event : items) { DateTime start = event.getStart().getDateTime(); if (start == null) { start = event.getStart().getDate(); } System.out.printf("%s (%s)\n", event.getSummary(), start); } } } } // [END calendar_quickstart]