createorderaction.java

网上购物程序 Java 实现在线购物的简单功能

package cn.com.shoppingonline;

import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Vector;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.ActionMessage;
import org.apache.struts.action.ActionMessages;
import org.apache.struts.action.DynaActionForm;

public final class CreateOrderAction extends Action{  
	public ActionForward execute(
		ActionMapping mapping,
		ActionForm form,
		HttpServletRequest request,  
		HttpServletResponse response) throws Exception {
			
   		DynaActionForm orderForm = (DynaActionForm) form;         
		String realname = (String)orderForm.get("realname");
		String address = (String)orderForm.get("address");
		String zip = (String)orderForm.get("zip");
		String tel = (String)orderForm.get("tel");
		String email = (String)orderForm.get("email");
		String memo = (String)orderForm.get("memo");
		String payment = (String)orderForm.get("payment");

		String PageForward;
		ActionMessages errors = new ActionMessages();
        HttpSession session = request.getSession();
 		Vector shopCartList=(Vector)session.getAttribute(Constants.SHOPCART_KEY);
		Member member = (Member)session.getAttribute(Constants.LOGIN_USER_KEY);
		/*
		 * 判断用户是否登陆
		 */		
		if (member==null) {
			errors.add(ActionMessages.GLOBAL_MESSAGE,
				new ActionMessage("errors.userUnLogin"));
			if (!errors.isEmpty()) {
				saveErrors(request, errors);
			} 
  			return  mapping.findForward("toWrong");  //用户未登陆
		}
		/*
		 * 判断购物车是否为空
		 */		
		else if (shopCartList==null||shopCartList.size()==0){
            errors.add(ActionMessages.GLOBAL_MESSAGE,
                           new ActionMessage("errors.nullShopCart"));
			if (!errors.isEmpty()) {
				saveErrors(request, errors);
			} 
 			PageForward="toWrong";  
		}
		else{
	 		//借助Hibernate完成与数据库相关的操作
			DbOperate	 db=new DbOperate();
			Order order=new Order();
			/*
			 *保存订单
			 */			
			SimpleDateFormat df  = new SimpleDateFormat("MMddhhmmss");
			String orderno = member.getUsername() + df.format(new Date()); //��ɶ������
			order.setOrderno(orderno);
			order.setUserid(member.getId());
			order.setRealname(realname);
			order.setAddress(address);
			order.setZip(zip);
			order.setTel(tel);
			order.setEmail(email);
			df  = new SimpleDateFormat("yyyy-MM-dd hh:mm");
			order.setTime( df.format(new Date()));
			order.setPayment(payment);
			order.setMemo(memo);
			order.setTag(0);
			db.save(order); 
			/*
			 * 保存购物车信息至订单细目表
			 */
			order=db.getOrder(orderno);
			double totalPrice=0;
			ShopCart shopCart = new ShopCart();
       		for(int i = 0; i < shopCartList.size() ;i++){
       			shopCart = (ShopCart)shopCartList.get(i);
       			shopCart.setOrderid(order.getId());
       			db.save(shopCart);
       			/*
       			 * 修改商品销售数量
       			 */
       			shopCart.getProduct().setSalecount(shopCart.getProduct().getSalecount() + shopCart.getCount());
      			db.update(shopCart.getProduct());
       			totalPrice=totalPrice+shopCart.getPrice();
       		}
			order.setPrice(totalPrice);
			db.update(order);
			session.setAttribute(Constants.ORDER_DETAIL_KEY,order);
			/*
			 * 清空购物车
			 */			
			shopCartList.clear();				
			session.setAttribute(Constants.SHOPCART_KEY,shopCartList);
 			PageForward="toOrderOk";
		}
	   	return (mapping.findForward(PageForward));
 	}
 	
}