Tilman
117 lines
4.8 KiB
Java
117 lines
4.8 KiB
Java
/* Copyright (c) 2008 Google Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package sample.oauth;
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import com.google.gdata.client.GoogleService;
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import com.google.gdata.client.authn.oauth.GoogleOAuthHelper;
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import com.google.gdata.client.authn.oauth.GoogleOAuthParameters;
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import com.google.gdata.client.authn.oauth.OAuthHmacSha1Signer;
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import com.google.gdata.client.authn.oauth.OAuthSigner;
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import com.google.gdata.data.BaseEntry;
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import com.google.gdata.data.BaseFeed;
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import com.google.gdata.data.Feed;
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import java.net.URL;
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/**
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* Sample application demonstrating how to do 2-Legged OAuth in the Google Data
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* Java Client. See the comments below to learn about the details.
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*
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*
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*/
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public class TwoLeggedOAuthExample {
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public static void main(String[] args) throws Exception {
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////////////////////////////////////////////////////////////////////////////
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// STEP 1: Gather the user's information
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////////////////////////////////////////////////////////////////////////////
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// This step collects information from the user, such as the consumer key
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// and which service to query. This is just a general setup routine, and
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// the method by which you collect user information may be different in your
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// implementation.
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UserInputHelper inputController =
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new TwoLeggedOAuthUserInputHelper();
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UserInputVariables variables = inputController.getVariables();
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////////////////////////////////////////////////////////////////////////////
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// STEP 2: Set up the OAuth objects
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////////////////////////////////////////////////////////////////////////////
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// You first need to initialize a few OAuth-related objects.
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// GoogleOAuthParameters holds all the parameters related to OAuth.
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// OAuthSigner is responsible for signing the OAuth base string.
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GoogleOAuthParameters oauthParameters = new GoogleOAuthParameters();
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// Set your OAuth Consumer Key (which you can register at
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// https://www.google.com/accounts/ManageDomains).
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oauthParameters.setOAuthConsumerKey(variables.getConsumerKey());
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// Initialize the OAuth Signer. 2-Legged OAuth must use HMAC-SHA1, which
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// uses the OAuth Consumer Secret to sign the request. The OAuth Consumer
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// Secret can be obtained at https://www.google.com/accounts/ManageDomains.
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oauthParameters.setOAuthConsumerSecret(variables.getSignatureKey());
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OAuthSigner signer = new OAuthHmacSha1Signer();
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// Finally create a new GoogleOAuthHelperObject. This is the object you
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// will use for all OAuth-related interaction.
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GoogleOAuthHelper oauthHelper = new GoogleOAuthHelper(signer);
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////////////////////////////////////////////////////////////////////////////
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// STEP 3: Make a request to Google
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////////////////////////////////////////////////////////////////////////////
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// Set the scope for this particular service.
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oauthParameters.setScope(variables.getScope());
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// Append the "xoauth_requestor_id" parameter to the feed url. This
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// parameter indicates which user you are loading the data for.
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String feedUrlString = variables.getFeedUrl();
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feedUrlString += "?xoauth_requestor_id="
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+ variables.getVariable("xoauth_requestor_id");
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URL feedUrl = new URL(feedUrlString);
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System.out.println("Sending request to " + feedUrl.toString());
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System.out.println();
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GoogleService googleService =
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new GoogleService(variables.getGoogleServiceName(),
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"2-legged-oauth-sample-app");
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// Set the OAuth credentials which were obtained from the steps above.
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googleService.setOAuthCredentials(oauthParameters, signer);
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// Make the request to Google
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BaseFeed resultFeed = googleService.getFeed(feedUrl, Feed.class);
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System.out.println("Response Data:");
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System.out.println("=====================================================");
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System.out.println("| TITLE: " + resultFeed.getTitle().getPlainText());
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if (resultFeed.getEntries().size() == 0) {
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System.out.println("|\tNo entries found.");
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} else {
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for (int i = 0; i < resultFeed.getEntries().size(); i++) {
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BaseEntry entry = (BaseEntry) resultFeed.getEntries().get(i);
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System.out.println("|\t" + (i + 1) + ": "
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+ entry.getTitle().getPlainText());
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}
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}
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System.out.println("=====================================================");
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}
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}
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