当当网java购物网站全套代码 struts框架（包含数据建表sql文件）

package org.whatisjava.dangdang.bo; import java.io.Serializable; import java.io.UnsupportedEncodingException; import java.util.ArrayList; import java.util.HashMap; import java.util.Iterator; import java.util.List; import org.apache.log4j.Logger; import org.whatisjava.dangdang.dao.ProductDao; import org.whatisjava.dangdang.domain.Product; import org.whatisjava.dangdang.exception.DaoException; import org.whatisjava.dangdang.util.DaoFactory; public class Cart implements Serializable { private static final long serialVersionUID = 1L; private static Logger logger = Logger.getLogger(Cart.class); ProductDao productDao = DaoFactory.getProductDao(); private Integer userId; // CartItem.product.id private HashMap<Integer, CartItem> items; /** * * @param user */ public Cart(Integer userId) { this.userId = userId; items = new HashMap<Integer, CartItem>(); } public Integer getUserId() { return userId; } /** * * @param product * @return */ public boolean addItem(Integer productId) throws DaoException { if (!items.containsKey(productId)) { Product product = productDao.findProductById(productId); if(product != null){ CartItem cartItem = new CartItem(); cartItem.setProduct(product); cartItem.setDrop(false); cartItem.setNumber(1); this.items.put(productId, cartItem); return true; } } return false; } /** * * @param productId * @param num * @return */ public boolean updateNum(Integer productId, int num) { CartItem cartItem = items.get(productId); if (num < 1) { return this.drop(productId); } else { cartItem.setNumber(num); return true; } } /** * * @param productId * @return */ public boolean drop(Integer productId) { CartItem cartItem = items.get(productId); if (!cartItem.isDrop()) { cartItem.setDrop(true); return true; } return false; } /** * * @param productId * @return */ public boolean recovery(Integer productId) { CartItem cartItem = items.get(productId); if (cartItem.isDrop()) { cartItem.setDrop(false); return true; } return false; } /** * */ public void clear() { items.clear(); } /** * * @return * @throws UnsupportedEncodingException */ public String serialize() { StringBuffer sb = new StringBuffer(); sb.append(getUserId()).append("@"); Iterator it = items.keySet().iterator(); while (it.hasNext()) { CartItem cartItem = (CartItem) items.get(it.next()); Product product = cartItem.getProduct(); sb.append(product.getId()).append("-"); sb.append(cartItem.getNumber()).append("-"); if (cartItem.isDrop()) { sb.append(1); } else { sb.append(0); } sb.append("|"); } return sb.toString(); } /** * * @param content * @throws DaoException * @throws UnsupportedEncodingException */ public void load(String content) { Integer userId = Integer.parseInt(content.substring(0, content .indexOf("@"))); if (userId == getUserId()) { content = content.substring(content.indexOf("@" + 1)); String[] itemsStr = content.split("|"); for (int i = 0; i < itemsStr.length; i++) { CartItem cartItem = new CartItem(); String[] cartItemStr = itemsStr[i].split("-"); Integer productId = Integer.parseInt(cartItemStr[0]); Integer num = Integer.parseInt(cartItemStr[1]); boolean drop; if(cartItemStr[3]=="1"){ drop = true; } else { drop = false; } Product product = productDao.findProductById(productId); cartItem.setProduct(product); cartItem.setNumber(num); cartItem.setDrop(drop); items.put(productId, cartItem); } } } /** * * @return */ public boolean isEmpty() { return items.isEmpty(); } /** * * @return */ public List<CartItem> getItems() { List<CartItem> list = new ArrayList<CartItem>(); Iterator<Integer> it = items.keySet().iterator(); while (it.hasNext()) { CartItem item = items.get(it.next()); if (!item.isDrop()) { list.add(item); } } return list; } /** * * @return */ public List<CartItem> getDropItems() { List<CartItem> list = new ArrayList<CartItem>(); Iterator<Integer> it = items.keySet().iterator(); while (it.hasNext()) { CartItem item = items.get(it.next()); if (item.isDrop()) { list.add(item); } } return list; } /** * * @return */ public double getTotalPrice() { double totalPrice = 0; Iterator iterator = items.keySet().iterator(); while (iterator.hasNext()) { CartItem cartItem = (CartItem) iterator.next(); Product product = cartItem.getProduct(); totalPrice += (double) cartItem.getNumber() * product.getFixedPrice(); } return totalPrice; } /** * * @return */ public double getDangPrice() { double totalPrice = 0; Iterator iterator = items.keySet().iterator(); while (iterator.hasNext()) { CartItem cartItem = (CartItem) iterator.next(); Product product = cartItem.getProduct(); totalPrice += (double) cartItem.getNumber() * product.getDangPrice(); } return totalPrice; } }