Java tutorial
/** * Copyright 2014 David L. Whitehurst * * 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.musicrecital.webapp.pages; import org.apache.tapestry5.EventContext; import org.apache.tapestry5.Link; import org.apache.tapestry5.alerts.AlertManager; import org.apache.tapestry5.alerts.Duration; import org.apache.tapestry5.alerts.Severity; import org.apache.tapestry5.annotations.InjectPage; import org.apache.tapestry5.ioc.Messages; import org.apache.tapestry5.ioc.annotations.Inject; import org.apache.tapestry5.services.PageRenderLinkSource; import org.musicrecital.service.UserManager; import org.musicrecital.webapp.services.EmailService; import org.musicrecital.webapp.util.RequestUtil; import org.slf4j.Logger; import org.springframework.security.core.userdetails.UsernameNotFoundException; import javax.servlet.http.HttpServletRequest; /** * Generates a password recovery token and sends it via email to user. * */ public class PasswordRecoveryToken { @Inject private Logger logger; @Inject private Messages messages; @Inject private UserManager userManager; @Inject private AlertManager alertManager; @Inject private HttpServletRequest request; @Inject private PageRenderLinkSource pageRenderLinkSource; private String username; Object onActivate(EventContext ctx) { // ensure that the username has been set if (ctx == null || ctx.getCount() == 0) { logger.warn("Username not specified, notifying user that it's a required field."); alertManager.alert(Duration.TRANSIENT, Severity.ERROR, messages.format("errors.required", messages.get("user.username"))); return Login.class; } // Expect username is the first item in the context int userIdx = 0; this.username = ctx.get(String.class, userIdx).trim(); logger.debug("Sending recovery token for username: " + username); try { userManager.sendPasswordRecoveryEmail(username, RequestUtil.getAppURL(request) + getLink()); } catch (final UsernameNotFoundException ignored) { // lets ignore this Throwable exceptionToLog = ignored.getCause() != null ? ignored.getCause() : ignored; logger.error(exceptionToLog.getLocalizedMessage()); } alertManager.alert(Duration.TRANSIENT, Severity.INFO, messages.get("updatePassword.recoveryToken.sent")); return Login.class; } /** * Build link for for password reset * @return URI */ public String getLink() { Link link = pageRenderLinkSource.createPageRenderLinkWithContext(PasswordUpdate.class); link.addParameter("username", "{username}"); link.addParameter("token", "{token}"); return link.toURI(); } }