cane.brothers.google.api.samples.spreadsheet.oauth2.SpreadsheetEntriesSample.java Source code

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Here is the source code for cane.brothers.google.api.samples.spreadsheet.oauth2.SpreadsheetEntriesSample.java

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/*
 * Copyright (c) 2010 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.
 */

package cane.brothers.google.api.samples.spreadsheet.oauth2;

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.HttpTransport;
import com.google.api.client.json.JsonFactory;
import com.google.api.client.json.jackson2.JacksonFactory;
import com.google.api.client.util.store.DataStoreFactory;
import com.google.api.client.util.store.FileDataStoreFactory;
import com.google.gdata.client.GoogleService;
import com.google.gdata.client.spreadsheet.SpreadsheetService;
import com.google.gdata.data.spreadsheet.SpreadsheetEntry;
import com.google.gdata.data.spreadsheet.SpreadsheetFeed;

import java.io.IOException;
import java.io.InputStreamReader;
import java.net.URL;
import java.util.Arrays;
import java.util.List;

/**
 * Command-line sample (for the Google Spreadsheet API using OAuth 2.0 for login) to show in console
 * all spreadsheet entries on google drive.
 *
 * @author Mikhail Niedre
 */
public class SpreadsheetEntriesSample {

    /**
     * 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 = "CaneBrothers-SpreadsheetSample/3.0";

    /** OAuth 2.0 scopes. */
    private static final List<String> SCOPES = Arrays.asList("https://spreadsheets.google.com/feeds");

    private static final String SPREADSHEETS_FEED = "https://spreadsheets.google.com/feeds/spreadsheets/private/full";

    /** Directory to store user credentials. */
    private static final java.io.File DATA_STORE_DIR = new java.io.File(System.getProperty("user.home"),
            ".store/oauth2_3_sample");

    private static final String CLIENT_SECRETS = "/client_secrets.json";

    /**
     * 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();

    private static GoogleClientSecrets clientSecrets;

    /** Authorizes the installed application to access user's protected data. */
    private static Credential authorize() throws Exception {

        // load client secrets
        clientSecrets = GoogleClientSecrets.load(JSON_FACTORY,
                new InputStreamReader(SpreadsheetEntriesSample.class.getResourceAsStream(CLIENT_SECRETS)));

        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/ "
                    + "into client_secrets.json");
            System.exit(1);
        }

        httpTransport = GoogleNetHttpTransport.newTrustedTransport();
        dataStoreFactory = new FileDataStoreFactory(DATA_STORE_DIR);

        // set up authorization code flow
        GoogleAuthorizationCodeFlow flow = new GoogleAuthorizationCodeFlow.Builder(httpTransport, JSON_FACTORY,
                clientSecrets, SCOPES).setDataStoreFactory(dataStoreFactory).build();

        AuthorizationCodeInstalledApp app = new AuthorizationCodeInstalledApp(flow, new LocalServerReceiver());

        // authorize
        return app.authorize("user");
    }

    public static void main(String[] args) {
        try {
            // authorization
            Credential credential = authorize();

            // connect to google service with credential
            GoogleService googleService = new SpreadsheetService(APPLICATION_NAME);
            googleService.setOAuth2Credentials(credential);

            // Define the URL to request. This should never change.
            URL SPREADSHEET_FEED_URL = new URL(SPREADSHEETS_FEED);

            // Make a request to the API and get all spreadsheets.
            SpreadsheetFeed feed = googleService.getFeed(SPREADSHEET_FEED_URL, SpreadsheetFeed.class);
            List<SpreadsheetEntry> spreadsheets = feed.getEntries();

            // Iterate through all of the spreadsheets returned
            for (SpreadsheetEntry spreadsheet : spreadsheets) {
                // Print the title of this spreadsheet to the screen
                System.out.println(spreadsheet.getTitle().getPlainText());
            }

            // success!
            return;
        }

        catch (IOException e) {
            System.err.println(e.getMessage());
        }

        catch (Throwable t) {
            t.printStackTrace();
        }

        System.exit(1);
    }
}