modifycartservlet.java

网上商城代码

package com.fendou.servlet;

import java.io.IOException;
import java.io.PrintWriter;
import java.util.List;

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

import com.fendou.vo.Goods;

public class ModifyCartServlet extends HttpServlet {

	
	public ModifyCartServlet() {
		super();
	}

	public void destroy() {
		super.destroy();
	}

	
	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {

		doPost(request,response);
	}

	
	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
        HttpSession session =request.getSession();
        List list=(List)session.getAttribute("cart");
        String[] goodsIDs=request.getParameterValues("goodsID");
        String[] goodsCounts=request.getParameterValues("goodsCount");
        if(goodsIDs!=null && goodsCounts!=null && list!=null){
        	for(int i=0;i<goodsIDs.length;i++){
        	    Goods goods=(Goods)list.get(i);
        	    long goodsID=Long.parseLong(goodsIDs[i]);
        	    int goodsCount=Integer.parseInt(goodsCounts[i]);
        	    goods.setGoodsCount(goodsCount);
        	}
        }
        session.setAttribute("cart", list);
		request.getRequestDispatcher("showCart").forward(request, response);
	}

	
	public void init() throws ServletException {
		
	}

}