Java tutorial
/* * The MIT License * * Copyright (c) 2015, Mahmoud Ben Hassine (mahmoud@benhassine.fr) * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ package io.github.benas.todolist.web.servlet.user.account; import io.github.benas.todolist.web.common.util.TodoListUtils; import io.github.todolist.core.domain.User; import io.github.todolist.core.service.api.UserService; import org.springframework.context.ApplicationContext; import org.springframework.web.context.support.WebApplicationContextUtils; import javax.servlet.ServletConfig; import javax.servlet.ServletException; import javax.servlet.annotation.WebServlet; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import javax.servlet.http.HttpSession; import java.io.IOException; import java.text.MessageFormat; import java.util.ResourceBundle; import static io.github.benas.todolist.web.util.Views.ACCOUNT_PAGE; /** * @author Mahmoud Ben Hassine (mahmoud@benhassine.fr) */ @WebServlet(name = "UpdateAccountServlet", urlPatterns = "/user/account/update.do") public class UpdateAccountServlet extends HttpServlet { private UserService userService; private ResourceBundle resourceBundle; @Override public void init(ServletConfig servletConfig) throws ServletException { ApplicationContext applicationContext = WebApplicationContextUtils .getWebApplicationContext(servletConfig.getServletContext()); userService = applicationContext.getBean(UserService.class); resourceBundle = ResourceBundle.getBundle("todolist"); } @Override protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { String name = request.getParameter("name"); String email = request.getParameter("email"); HttpSession session = request.getSession(); User user = (User) session.getAttribute(TodoListUtils.SESSION_USER); if (isAlreadyUsed(email) && isDifferent(email, user.getEmail())) { request.setAttribute("error", MessageFormat.format(resourceBundle.getString("account.email.alreadyUsed"), email)); request.setAttribute("user", user); request.getRequestDispatcher(ACCOUNT_PAGE).forward(request, response); return; } user.setName(name); user.setEmail(email); userService.update(user); request.setAttribute("updateProfileSuccessMessage", resourceBundle.getString("account.profile.update.success")); request.getRequestDispatcher("/user/account").forward(request, response); } private boolean isDifferent(String newEmail, String currentEmail) { return !newEmail.equals(currentEmail); } private boolean isAlreadyUsed(String email) { return userService.getUserByEmail(email) != null; } }