Java tutorial
/* * Copyright (C) 2015 marco-g8 * * 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 3 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/>. */ package com.gisnet.cancelacion.web.controller; import java.util.ArrayList; import java.util.List; import org.springframework.ui.Model; import org.springframework.web.servlet.mvc.support.RedirectAttributes; /** * * @author marco-g8 */ public class Utils { public static List<String> getMensajes(Model model) { List<String> messages; if (model.containsAttribute("mensajes")) { messages = (List<String>) model.asMap().get("mensajes"); } else { messages = new ArrayList<>(); model.addAttribute("mensajes", messages); } return messages; } public static List<String> getFlashMensajes(Model model, RedirectAttributes redirectAttributes) { List<String> messages = getMensajes(model); redirectAttributes.addFlashAttribute("mensajes", messages); return messages; } }