Java tutorial
package de.metas.procurement.webui.ui.view; import java.net.URI; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.beans.factory.annotation.Autowired; import com.google.gwt.thirdparty.guava.common.base.Throwables; import com.vaadin.navigator.View; import com.vaadin.navigator.ViewChangeListener.ViewChangeEvent; import com.vaadin.server.Page; import com.vaadin.ui.CustomComponent; import de.metas.procurement.webui.Application; import de.metas.procurement.webui.MFProcurementUI; import de.metas.procurement.webui.event.UIEventBus; import de.metas.procurement.webui.event.UserLoggedInEvent; import de.metas.procurement.webui.model.User; import de.metas.procurement.webui.service.ILoginService; import de.metas.procurement.webui.ui.component.MFNavigator; /* * #%L * de.metas.procurement.webui * %% * Copyright (C) 2016 metas GmbH * %% * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as * published by the Free Software Foundation, either version 2 of the * License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public * License along with this program. If not, see * <http://www.gnu.org/licenses/gpl-2.0.html>. * #L% */ @SuppressWarnings("serial") public class PasswordResetView extends CustomComponent implements View { public static final String NAME = "password-reset"; private static final String STYLE = "PasswordResetView"; private final transient Logger logger = LoggerFactory.getLogger(getClass()); @Autowired(required = true) ILoginService loginService; public PasswordResetView() { super(); Application.autowire(this); addStyleName(STYLE); } @Override public void enter(final ViewChangeEvent event) { try { final String parameters = event.getParameters(); final String passwordResetKey = parameters; final User user = loginService.resetPassword(passwordResetKey); final String afterLoginMessage = "New password: " + user.getPassword(); UIEventBus.post(UserLoggedInEvent.of(user, afterLoginMessage)); } catch (Exception e) { // TODO: shall we display a notification to the user? logger.warn("Error while reseting password", e); MFProcurementUI.getCurrentNavigator().navigateToDefaultView(); } } public static final URI buildPasswordResetURI(final String passwordResetKey) { try { final URI uri = Page.getCurrent().getLocation(); final String query = null; final String fragment = MFNavigator.createURIFragment(NAME, passwordResetKey); final URI resetURI = new URI(uri.getScheme(), uri.getAuthority(), uri.getPath(), query, fragment); System.out.println(resetURI); return resetURI; } catch (Exception e) { throw Throwables.propagate(e); } } }