docheckoutaction.java

网上购物系统 管理员模块和用户模块

/*
 * Generated by MyEclipse Struts
 * Template path: templates/java/JavaClass.vtl
 */
package com.yourcompany.struts.action;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import m.ShoppingCart;
import m.User;

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 db.UserDB;

/** 
 * MyEclipse Struts
 * Creation date: 01-07-2009
 * 
 * XDoclet definition:
 * @struts.action validate="true"
 * @struts.action-forward name="f" path="/CheckOutF.jsp"
 * @struts.action-forward name="s" path="/CheckOutS.jsp"
 */
public class DoCheckOutAction extends Action {
	/*
	 * Generated Methods
	 */

	/** 
	 * Method execute
	 * @param mapping
	 * @param form
	 * @param request
	 * @param response
	 * @return ActionForward
	 */
	public ActionForward execute(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response) {
		
		UserDB db=new UserDB();
		User user=(User)request.getSession().getAttribute("User");
		ShoppingCart cart=(ShoppingCart)request.getSession().getAttribute("cart");
		String name=user.getName();
		double money=user.getMoney();
		if(cart==null)
		{
			cart=new ShoppingCart();
			request.getSession().setAttribute("cart", cart);
		}
		//2.
		if(cart.getTotalCost()>user.getMoney())
		{
			return mapping.findForward("f");
		}
		else
		{
			double money1=money-cart.getTotalCost();
			db.updateMoney(name,money1);
			user.updateMoney(cart.getTotalCost());
			request.getSession().setAttribute("User", user);
			return mapping.findForward("s");
		}
	}
}