Java tutorial
/* * Copyright (c) 2009, 2010, 2011, 2012, B3log Team * * 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.b3log.solo.event.comment; import java.util.logging.Level; import java.util.logging.Logger; import org.b3log.latke.Keys; import org.b3log.latke.event.AbstractEventListener; import org.b3log.latke.event.Event; import org.b3log.latke.event.EventException; import org.b3log.latke.mail.MailService; import org.b3log.latke.mail.MailService.Message; import org.b3log.latke.mail.MailServiceFactory; import org.b3log.latke.util.Strings; import org.b3log.solo.SoloServletListener; import org.b3log.solo.event.EventTypes; import org.b3log.solo.model.Comment; import org.b3log.solo.model.Preference; import org.b3log.solo.repository.CommentRepository; import org.b3log.solo.model.Page; import org.b3log.solo.repository.impl.CommentRepositoryImpl; import org.b3log.solo.service.PreferenceQueryService; import org.json.JSONObject; /** * This listener is responsible for processing page comment reply. * * @author <a href="mailto:DL88250@gmail.com">Liang Ding</a> * @version 1.0.1.1, Oct 31, 2011 * @since 0.3.1 */ public final class PageCommentReplyNotifier extends AbstractEventListener<JSONObject> { /** * Logger. */ private static final Logger LOGGER = Logger.getLogger(PageCommentReplyNotifier.class.getName()); /** * Comment repository. */ private CommentRepository commentRepository = CommentRepositoryImpl.getInstance(); /** * Mail service. */ private MailService mailService = MailServiceFactory.getMailService(); /** * Preference query service. */ private PreferenceQueryService preferenceQueryService = PreferenceQueryService.getInstance(); @Override public void action(final Event<JSONObject> event) throws EventException { final JSONObject eventData = event.getData(); final JSONObject comment = eventData.optJSONObject(Comment.COMMENT); final JSONObject page = eventData.optJSONObject(Page.PAGE); LOGGER.log(Level.FINER, "Processing an event[type={0}, data={1}] in listener[className={2}]", new Object[] { event.getType(), eventData, PageCommentReplyNotifier.class.getName() }); final String originalCommentId = comment.optString(Comment.COMMENT_ORIGINAL_COMMENT_ID); if (Strings.isEmptyOrNull(originalCommentId)) { LOGGER.log(Level.FINER, "This comment[id={0}] is not a reply", comment.optString(Keys.OBJECT_ID)); return; } try { final String commentEmail = comment.getString(Comment.COMMENT_EMAIL); final JSONObject originalComment = commentRepository.get(originalCommentId); final String originalCommentEmail = originalComment.getString(Comment.COMMENT_EMAIL); if (originalCommentEmail.equalsIgnoreCase(commentEmail)) { return; } final JSONObject preference = preferenceQueryService.getPreference(); if (null == preference) { throw new EventException("Not found preference"); } final String blogTitle = preference.getString(Preference.BLOG_TITLE); final String adminEmail = preference.getString(Preference.ADMIN_EMAIL); final String commentContent = comment.getString(Comment.COMMENT_CONTENT) .replaceAll(SoloServletListener.ENTER_ESC, "<br/>"); final String commentSharpURL = comment.getString(Comment.COMMENT_SHARP_URL); final Message message = new Message(); message.setFrom(adminEmail); message.addRecipient(originalCommentEmail); final JSONObject replyNotificationTemplate = preferenceQueryService.getReplyNotificationTemplate(); final String mailSubject = replyNotificationTemplate.getString("subject").replace("${blogTitle}", blogTitle); message.setSubject(mailSubject); final String pageTitle = page.getString(Page.PAGE_TITLE); final String blogHost = preference.getString(Preference.BLOG_HOST); final String pageLink = "http://" + blogHost + page.getString(Page.PAGE_PERMALINK); final String commentName = comment.getString(Comment.COMMENT_NAME); final String commentURL = comment.getString(Comment.COMMENT_URL); String commenter = null; if (!"http://".equals(commentURL)) { commenter = "<a target=\"_blank\" " + "href=\"" + commentURL + "\">" + commentName + "</a>"; } else { commenter = commentName; } final String mailBody = replyNotificationTemplate.getString("body").replace("${postLink}", pageLink) .replace("${postTitle}", pageTitle).replace("${replier}", commenter) .replace("${replyURL}", "http://" + blogHost + commentSharpURL) .replace("${replyContent}", commentContent); message.setHtmlBody(mailBody); LOGGER.log(Level.FINER, "Sending a mail[mailSubject={0}, mailBody=[{1}] to [{2}]", new Object[] { mailSubject, mailBody, originalCommentEmail }); mailService.send(message); } catch (final Exception e) { LOGGER.log(Level.SEVERE, e.getMessage(), e); throw new EventException("Reply notifier error!"); } } /** * Gets the event type {@linkplain EventTypes#ADD_COMMENT_TO_PAGE}. * * @return event type */ @Override public String getEventType() { return EventTypes.ADD_COMMENT_TO_PAGE; } }