ordersaction.java

学JAVA时

//Created by MyEclipse Struts
// XSL source (default): platform:/plugin/com.genuitec.eclipse.cross.easystruts.eclipse_4.0.0/xslt/JavaClass.xsl

package com.zhang.struts.action;

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 com.zhang.struts.dao.*;
import com.zhang.struts.form.OrdersForm;
import com.zhang.struts.po.Book;
import com.zhang.struts.util.*;

/** 
 * MyEclipse Struts
 * Creation date: 06-03-2006
 * 
 * XDoclet definition:
 * @struts.action path="/orders" name="ordersForm" input="/succeed.jsp" scope="request" validate="true"
 * @struts.action-forward name="ordersfail" path="/ordersfail.jsp"
 * @struts.action-forward name="orderssucceed" path="/orderssucceed.jsp"
 */
public class OrdersAction extends Action {

	// --------------------------------------------------------- Instance Variables

	// --------------------------------------------------------- Methods

	/** 
	 * Method execute
	 * @param mapping
	 * @param form
	 * @param request
	 * @param response
	 * @return ActionForward
	 */
	
	//购物车信息Action
	public ActionForward execute(
		ActionMapping mapping,
		ActionForm form,
		HttpServletRequest request,
		HttpServletResponse response) {
		OrdersForm ordersForm = (OrdersForm) form;
		// TODO Auto-generated method stub
		
		    HttpSession session= request.getSession(true);
		    //第一次进入没有 cart
		    ShoppingCart cart=(ShoppingCart)session.getAttribute("shoppingCart");
		    
		    if(cart == null){
		    	cart = new ShoppingCart();	    	
		    	String id = ordersForm.getId();
		    	DBManager db = new DBManager();
		    	Book book = db.searchBookById(id);
		    	cart.add(id,book);
		    	session.setAttribute("shoppingCart",cart);
		    	return mapping.findForward("orderssucceed");
		    }else{
		    	String id = ordersForm.getId();
		    	DBManager db = new DBManager();
		    	Book book = db.searchBookById(id);
		    	cart.add(id,book);
		    	session.setAttribute("shoppingCart",cart);
		    	return mapping.findForward("orderssucceed");
			
		}
	}
}