public String userLogin()
 {
  String sql="from TUser where userName=? and userPw=?";
  Object[] con={userName,userPw};
  List userList=userDAO.getHibernateTemplate().find(sql,con);
  if(userList.size()==0)
  {
   this.setMessage("用戶名或密碼錯誤");
   this.setPath("qiantai/index.html");
  }
  else
  {
    Map session= ServletActionContext.getContext().getSession();
    TUser user=(TUser)userList.get(0);
    session.put("user", user);
    Cart cart=new Cart();          //用戶登陸成功后生成購物車，并將其放入到session中。
    session.put("cart", cart);
    this.setMessage("成功登錄");
    this.setPath("qiantai/index.html");
  }
  return "succeed";
 }

public String addToCart()
 {
  TGoods goods=goodsDAO.findById(goodsId);
  TOrderItem orderItem=new TOrderItem();
  orderItem.setGoods(goods);
  orderItem.setGoodsQuantity(quantity);
  Map session= ServletActionContext.getContext().getSession();
  Cart cart = (Cart)session.get("cart");     //將session中的cart取出，也就是上邊存儲在session中的cart
  cart.addGoods(goodsId, orderItem);
  session.put("cart",cart);              //再把cart放入session
  //this.setMessage("");
  this.setPath("myCart.action");
  return "succeed";
 }
 public String myCart()     //獲取我的購物車
 {
  return ActionSupport.SUCCESS;
 }
 public String orderQueren()                 //確認提交訂單
 {
  Map request=(Map)ServletActionContext.getContext().get("request");
  return ActionSupport.SUCCESS;
 }
 public String orderSubmit()  //訂單提交
 {
  Map session= ServletActionContext.getContext().getSession();
  Cart cart = (Cart)session.get("cart");  //將cart取出
  TUser user=(TUser)session.get("user");    //將用戶取出
  TOrder order=new TOrder();
  order.setOrderBianhao(new SimpleDateFormat("yyyyMMddhhmmss").format(new Date()));  //設(shè)定訂單編號
  order.setOrderDate(new SimpleDateFormat("yyyy-MM-dd hh:mm:ss").format(new Date()));  //確認訂單的日期
  order.setOrderZhuangtai("no");   //訂單狀態(tài)默認為未受理                                      
  order.setOrderUserId(user.getUserId());     //設(shè)定訂單的用戶ID
        order.setOrderJine(cart.getTotalPrice());       //商品的價格
  orderDAO.save(order);                 //保存訂單
   
  for (Iterator it = cart.getItems().values().iterator(); it.hasNext();)
     //把訂單里的商品存入數(shù)據(jù)庫
  {
   TOrderItem orderItem = (TOrderItem) it.next();
   orderItem.setOrderId(order.getOrderId());
   orderItem.setGoodsId(orderItem.getGoods().getGoodsId());
   orderItemDAO.save(orderItem);
  }
  cart.getItems().clear();  //清空購物車
  session.put("cart", cart);
  
  Map request=(Map)ServletActionContext.getContext().get("request");
  request.put("order", order);
  return ActionSupport.SUCCESS;
   }
   Public String myOrder() //根據(jù)用戶查詢訂單
 {
  Map session= ServletActionContext.getContext().getSession();
  TUser user=(TUser)session.get("user");    //獲取用戶
  String sql="from TOrder where orderUserId="+user.getUserId();
  List orderList=orderDAO.getHibernateTemplate().find(sql);    //調(diào)用orderDAO中的find方法，執(zhí)行sql語句
  Map request=(Map)ServletActionContext.getContext().get("request");  
  request.put("orderList", orderList);     
  return ActionSupport.SUCCESS;
 }
  public String orderMana()     //訂單管理
 {
  String sql="from TOrder order by orderUserId";
  List orderList=orderDAO.getHibernateTemplate().find(sql);
  Map request=(Map)ServletActionContext.getContext().get("request");
  request.put("orderList", orderList);
  return ActionSupport.SUCCESS;
 }
   Public String  orderDel()   //用戶自己刪除訂單
 {
  TOrder order=orderDAO.findById(orderId);
  orderDAO.delete(order);
   
  Map session= ServletActionContext.getContext().getSession();
  TUser user=(TUser)session.get("user");
  
  this.setMessage("刪除成功");
  this.setPath("myOrder.action?userId="+user.getUserId());     //跳轉(zhuǎn)到 myOrder.action
  return "succeed";
 }
  public String orderDelByAd()    //管理員刪除訂單
 {
  TOrder order=orderDAO.findById(orderId);
  orderDAO.delete(order);
  String sql="delete from TOrderItem where orderId="+orderId;
  orderItemDAO.getHibernateTemplate().bulkUpdate(sql);
  
  this.setMessage("刪除成功");
  this.setPath("orderMana.action");
  return "succeed";
 }
  public String orderShouli()        //對訂單進行受理
 {
  TOrder order=orderDAO.findById(orderId);
  order.setOrderZhuangtai("yes");//已經(jīng)受理訂單
  orderDAO.attachDirty(order);
  this.setMessage("受理訂單成功");
  this.setPath("orderMana.action");
  return "succeed";
 }
    public String orderDetail()                 //訂單明細
 {
  String sql="from TOrderItem where orderId="+orderId;
  List orderItemList=orderItemDAO.getHibernateTemplate().find(sql);
  for(int i=0;i<orderItemList.size();i++)
  {
   TOrderItem orderItem=(TOrderItem)orderItemList.get(i);
   orderItem.setGoods(goodsDAO.findById(orderItem.getGoodsId()));
  }       //取出訂單里的商品
  Map request=(Map)ServletActionContext.getContext().get("request");
  request.put("orderItemList", orderItemList);
  return ActionSupport.SUCCESS;
 }

package com.util;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import com.model.TGoods;
import com.model.TOrderItem;
public class Cart    //定義購物車類
{
 protected Map<Integer, TOrderItem> items;
 public Cart()   //定義構(gòu)造方法
 {
  if (items == null)
  {
   items = new HashMap<Integer, TOrderItem>();
  }
 }
 public void addGoods(Integer goodsId, TOrderItem orderItem)   //添加購物車
 {

  if (items.containsKey(goodsId))                                   
  {
   TOrderItem _orderitem = items.get(goodsId);
   _orderitem.setGoodsQuantity(_orderitem.getGoodsQuantity()+ orderItem.getGoodsQuantity());  //如果購買商品重復(fù)，則加上數(shù)量
   items.put(goodsId, _orderitem);
  } else
  {
   items.put(goodsId, orderItem);
  }
 }
  Public void delGoods(Integer goodsId)     //刪除購物車
 {
  items.remove(goodsId);
 }
  public void updateCart(Integer goodsId, int quantity)    //更新購物車的數(shù)量
 {
  TOrderItem orderItem = items.get(goodsId);
  orderItem.setGoodsQuantity(quantity);
  items.put(goodsId, orderItem);
 }
public int getTotalPrice() //計算總的價格
 {
  int totalPrice = 0;
  for (Iterator it = items.values().iterator(); it.hasNext();)
  {
   TOrderItem orderItem = (TOrderItem) it.next();
   TGoods goods = orderItem.getGoods();
   int quantity = orderItem.getGoodsQuantity();
   totalPrice += goods.getGoodsTejia() * quantity; //單價乘以數(shù)量
  }
  return totalPrice;
 }
}