Java tutorial
package org.eg.sc.web; import java.util.List; import javax.annotation.Resource; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpSession; import org.apache.struts2.ServletActionContext; import org.eg.sc.entity.Order; import org.eg.sc.entity.OrderCar; import org.eg.sc.entity.Product; import org.eg.sc.entity.User; import org.eg.sc.service.ShoppingCartService; import org.springframework.stereotype.Controller; import com.opensymphony.xwork2.ActionSupport; /* * Copyright (C) 2014 tqlbigdatatangqianlong <tqlbigdata@163.com> * * 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/>. */ /** * ?? * * @author: tqlbigdata * @mailto:tqlbigdata@163.com * @date: 20141124 * @blog : http://tqlbigdata.github.io/ * @review */ @Controller public class ShopCartAction extends ActionSupport { private static final long serialVersionUID = 1L; @Resource private ShoppingCartService shoppingCartServiceImpl; private User user; private Product product; private OrderCar car; public String queryAllProduct() { List<Product> products = shoppingCartServiceImpl.queryAllProduct(); HttpServletRequest request = ServletActionContext.getRequest(); request.setAttribute("products", products); HttpSession session = ServletActionContext.getRequest().getSession(); OrderCar car = (OrderCar) session.getAttribute("Car"); if (car == null) { car = new OrderCar(); session.setAttribute("Car", car); } return SUCCESS; } public String login() { User u = shoppingCartServiceImpl.login(user); if (u == null) { return ERROR; } else { HttpSession session = ServletActionContext.getRequest().getSession(); // OrderCar car = (OrderCar) session.getAttribute("Car"); // OrderCar car = new OrderCar(); session.setAttribute("User", u); // session.setAttribute("Car", car); return "list"; } } public String addToCart() { HttpSession session = ServletActionContext.getRequest().getSession(); OrderCar car = (OrderCar) session.getAttribute("Car"); if (car == null) { car = new OrderCar(); car.addProduct(product); session.setAttribute("Car", car); } else { car.addProduct(product); } return "list"; } public String saveOrder() { Order order = new Order(); HttpSession session = ServletActionContext.getRequest().getSession(); car = (OrderCar) session.getAttribute("Car"); User user = (User) session.getAttribute("User"); order.setStatus(1); order.setUser(user); order.setCost(car.getTotalPrice()); order.setItems(car.getItems()); car.clear(); shoppingCartServiceImpl.saveOrder(order); return "cart"; } public ShoppingCartService getShoppingCartServiceImpl() { return shoppingCartServiceImpl; } public void setShoppingCartServiceImpl(ShoppingCartService shoppingCartServiceImpl) { this.shoppingCartServiceImpl = shoppingCartServiceImpl; } public User getUser() { return user; } public void setUser(User user) { this.user = user; } public Product getProduct() { return product; } public void setProduct(Product product) { this.product = product; } public OrderCar getCar() { return car; } public void setCar(OrderCar car) { this.car = car; } }