Java tutorial
/* * Copyright 2011 the original author or authors. * * 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 org.easit.core.controllers.twitter; import javax.inject.Inject; import org.springframework.social.DuplicateStatusException; import org.springframework.social.connect.Connection; import org.springframework.social.connect.ConnectionFactory; import org.springframework.social.connect.ConnectionRepository; import org.springframework.social.connect.web.ConnectInterceptor; import org.springframework.social.twitter.api.Twitter; import org.springframework.util.MultiValueMap; import org.springframework.util.StringUtils; import org.springframework.web.context.request.WebRequest; public class TwitterAfterConnectInterceptor implements ConnectInterceptor<Twitter> { @Inject private ConnectionRepository connectionRepository; @Override public void preConnect(ConnectionFactory<Twitter> provider, MultiValueMap<String, String> parameters, WebRequest request) { if (StringUtils.hasText(request.getParameter(POST_TWEET_PARAMETER))) { request.setAttribute(POST_TWEET_ATTRIBUTE, Boolean.TRUE, WebRequest.SCOPE_SESSION); } } @Override public void postConnect(Connection<Twitter> connection, WebRequest request) { request.setAttribute("connectedToTwitter", connection.test(), WebRequest.SCOPE_SESSION); request.setAttribute("connectedToAny", connectionRepository.findAllConnections().size() > 0, WebRequest.SCOPE_SESSION); if (request.getAttribute(POST_TWEET_ATTRIBUTE, WebRequest.SCOPE_SESSION) != null) { try { connection.updateStatus("Connected!"); } catch (DuplicateStatusException e) { } request.removeAttribute(POST_TWEET_ATTRIBUTE, WebRequest.SCOPE_SESSION); } } private static final String POST_TWEET_PARAMETER = "postTweet"; private static final String POST_TWEET_ATTRIBUTE = "twitterConnect." + POST_TWEET_PARAMETER; }