cartaction.java

struts hibernate框架 商场买卖

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

import java.util.Hashtable;

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.actions.DispatchAction;

import com.shopping.bo.cart.CartManager;

public class CartAction extends DispatchAction {


	public ActionForward add(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response) {
		Integer item_id = Integer.parseInt(request.getParameter("itemId"));
		//Integer action = Integer.parseInt(request.getParameter("action"));
		HttpSession session = request.getSession();
		Hashtable<Integer, Integer> ht = null;
		Integer item_quantity;
		
			Object o = session.getAttribute("ht");
	        
	        if(o == null)
	        {
	        	ht = new Hashtable<Integer, Integer>();
	        }
	        else 
	               ht = (Hashtable)o;

			if (ht.containsKey(item_id)) {// 购物车中存在此商品则累加个数
				item_quantity = ht.get(item_id)+1;
				ht.put(item_id, new Integer(item_quantity));
				session.setAttribute("ht", ht);
				return mapping.findForward("success");
			} else {// 购物车中不存在此商品
				item_quantity =1;
				ht.put(item_id, new Integer(item_quantity));
				session.setAttribute("ht", ht);
				return mapping.findForward("success");
			}
		
	}
	public ActionForward update(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response) {
		Integer item_id = Integer.parseInt(request.getParameter("itemId"));
		//Integer action = Integer.parseInt(request.getParameter("action"));
		HttpSession session = request.getSession();
		Hashtable<Integer, Integer> ht = null;
		Integer item_quantity;

		item_quantity = Integer.parseInt(request.getParameter("quantity"));
		ht = (Hashtable)session.getAttribute("ht");
		ht.put(item_id, item_quantity);
		session.setAttribute("ht", ht);
		return mapping.findForward("success");
	}
	
	public ActionForward delete(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response) {
		Integer item_id = Integer.parseInt(request.getParameter("itemId"));
		//Integer action = Integer.parseInt(request.getParameter("action"));
		HttpSession session = request.getSession();
		Hashtable<Integer, Integer> ht = null;
		Integer item_quantity;
			ht = (Hashtable)session.getAttribute("ht");
			ht.remove(item_id);
			session.setAttribute("ht", ht);
			return mapping.findForward("success");
		
	}
	
	public ActionForward deleteAll(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response) {
		//Integer item_id = Integer.parseInt(request.getParameter("itemId"));
		//Integer action = Integer.parseInt(request.getParameter("action"));
		HttpSession session = request.getSession();
		Hashtable<Integer, Integer> ht = null;
		session.setAttribute("totalPrice",0);
    	session.setAttribute("total_quantity",0);
		session.setAttribute("ht", ht);
		return mapping.findForward("success");
		
	}
	
}