JavaWeb(SSH入门项目，适合初学者，适用学生毕业设计)网上购书系统+SQL Server 2005数据库

package org.bookstore.action; import java.util.Date; import java.util.Iterator; import java.util.Map; import org.bookstore.model.Book; import org.bookstore.model.Orderitem; import org.bookstore.model.Orders; import org.bookstore.model.User; import org.bookstore.service.IBookService; import org.bookstore.service.IOrderService; import org.bookstore.tool.Cart; import com.opensymphony.xwork2.ActionContext; import com.opensymphony.xwork2.ActionSupport; public class ShoppingAction extends ActionSupport { private int bookid; private int quantity; private IBookService bookService; private IOrderService orderService; public int getBookid() { return bookid; } public void setBookid(int bookid) { this.bookid = bookid; } public int getQuantity() { return quantity; } public void setQuantity(int quantity) { this.quantity = quantity; } public void setBookService(IBookService bookService) { this.bookService=bookService; } public String addToCart() throws Exception{ //得到要购买的图书 Book book=bookService.getBookById(bookid); //创建一个订单项 Orderitem orderitem=new Orderitem(); //把要购买的书籍添加到订单项 orderitem.setBook(book); //设置要购买图书数量 orderitem.setQuantity(quantity); Map session=ActionContext.getContext().getSession(); //获得购物车对象 Cart cart=(Cart)session.get("cart"); //如果没有就创建一个 if(cart==null){ cart=new Cart(); } //把图书的ID和订单项添加入购物车 cart.addBook(bookid, orderitem); //把购物车放入Session中 session.put("cart",cart); return SUCCESS; } public String updateCart() throws Exception{ Map session=ActionContext.getContext().getSession(); Cart cart=(Cart)session.get("cart"); //直接调用购物车模型中的方法实现修改图书数量 cart.updateCart(bookid, this.getQuantity()); System.out.println(this.getQuantity()); session.put("cart", cart); return SUCCESS; } public String checkout() throws Exception{ Map session=ActionContext.getContext().getSession(); User user=(User)session.get("user"); Cart cart=(Cart)session.get("cart"); if(user==null || cart ==null) return ActionSupport.ERROR;//如果没有登录返回登录界面 Orders order=new Orders(); order.setOrderdate(new Date()); order.setUser(user); for(Iterator it =cart.getItems().values().iterator();it.hasNext();){ Orderitem orderitem=(Orderitem)it.next(); orderitem.setOrders(order); order.getOrderitems().add(orderitem); } orderService.saveOrder(order); Map request=(Map)ActionContext.getContext().get("request"); request.put("order",order); return SUCCESS; } public IOrderService getOrderService() { return orderService; } public void setOrderService(IOrderService orderService) { this.orderService = orderService; } }