网上商城7--订单模块

CREATE TABLE `orders` (
`oid` int(11) NOT NULL AUTO_INCREMENT,
`total` double DEFAULT NULL,
`ordertime` datetime DEFAULT NULL,
`state` int(11) DEFAULT NULL,
`name` varchar(20) DEFAULT NULL,
`addr` varchar(100) DEFAULT NULL,
`phone` varchar(20) DEFAULT NULL,
`uid` int(11) DEFAULT NULL,
PRIMARY KEY (`oid`),
KEY `FKC3DF62E5AA3D9C7` (`uid`),
CONSTRAINT `FKC3DF62E5AA3D9C7` FOREIGN KEY (`uid`) REFERENCES `user` (`uid`)
) ENGINE=InnoDB AUTO_INCREMENT=2 DEFAULT CHARSET=utf8;

CREATE TABLE `orderitem` (
`itemid` int(11) NOT NULL AUTO_INCREMENT,
`count` int(11) DEFAULT NULL,
`subtotal` double DEFAULT NULL,
`pid` int(11) DEFAULT NULL,
`oid` int(11) DEFAULT NULL,
PRIMARY KEY (`itemid`),
KEY `FKE8B2AB6166C01961` (`oid`),
KEY `FKE8B2AB6171DB7AE4` (`pid`),
CONSTRAINT `FKE8B2AB6166C01961` FOREIGN KEY (`oid`) REFERENCES `orders` (`oid`),
CONSTRAINT `FKE8B2AB6171DB7AE4` FOREIGN KEY (`pid`) REFERENCES `product` (`pid`)
) ENGINE=InnoDB AUTO_INCREMENT=2 DEFAULT CHARSET=utf8;

public class Order {
private Integer oid;
private Double total;
private Date ordertime;
private String name;
private String addr;
private String phone;
private Integer state;
// 与用户的关联关系
private User user;
// 与订单项关联关系
private Set<OrderItem> orderItems = new HashSet<OrderItem>();
....
}

public class OrderItem {
private Integer itemid;
private Integer count;
private Double subtotal;
private Product product;
private Order order;
....
}

public String createOrder() {
// 将Order对象存入到数据库中:
// 封装Order对象:
Order order = new Order();
// 封装总价---从购物车的信息获得.
// 获得购物车:
Cart cart = (Cart) ServletActionContext.getRequest().getSession()
.getAttribute("cart");
// 判断:
if (cart == null) {
this.addActionError("亲!您还没有购物!请先去购物!");
return "msg";
}
// 设置所属用户:
User existUser = (User) ServletActionContext.getRequest().getSession()
.getAttribute("existUser");
if (existUser == null) {
this.addActionError("亲!您还没有登录!请先去登录!");
return "msg";
}
order.setUser(existUser);
order.setTotal(cart.getTotal());
// 封装时间
order.setOrdertime(new Date());
// 封装状态
order.setState(1); // 1 未付款 2 已经付款,未发货 3.已经发货,没有确认收货 4.订单完成.
// 为订单设置订单项集合:
for (CartItem cartItem : cart.getCartItems()) {
// 将购物项的数据封装到订单项中.
OrderItem orderItem = new OrderItem();
orderItem.setCount(cartItem.getCount());
orderItem.setSubtotal(cartItem.getSubtotal());
orderItem.setProduct(cartItem.getProduct());
orderItem.setOrder(order);
// 放入订单的集合:
order.getOrderItems().add(orderItem);
}
// 购物车清空了.
cart.clearCart();
// 调用Service保存订单的操作:
orderService.save(order);

// 将订单存入到值栈中:
ActionContext.getContext().getValueStack().set("order", order);
// 页面跳转:
return "createOrderSuccess";
}

5.查询某个订单: