购物车代码

购物车

//shopping.html

//<%@page contentType="text/html;charset=gb2312" %>//要这句话保存为shopping.jsp,不要它保存为shopping.html也可以。

please select the item that you want to buy

book:old man and the sea//你卖的货物

x-box game machine//你卖的货物

mp3 player//你卖的货物

cce//你卖的货物

book:jsp programming//你卖的货物

cd "the endless love"//你卖的货物

dvd "gone with the wind"//你卖的货物

----------------------------------------------------------------------------------------------------------------- //carts.jsp

<%@page contentType="text/html;charset=gb2312" %>

<%

cart.processRequest();

%>

you have chosen these items://你选择的货物

<%

String []items=cart.getItems();

for(int i=0;i

{

%>

1. <%=items[i] %>

<%

}

%>

---

<%@include file="shopping.htm" %>

------------------------------------------------------------------------------------------------------------------- //DummyCart.java

package test;

import javax.servlet.http.*;

import java.util.Vector;

import java.util.Enumeration;

public class DummyCart

{

Vector v = new Vector();

String submit=null;

String item= null;

private void addItem(String name) {

v.addElement(name);

}

private void removeItem(String name) {

v.removeElement(name);

}

public void setItem(String s)

{

item=s;

}

public void setSubmit(String s)

{

submit=s;

}

public String[] getItems()

{

String []s=new String[v.size()];

v.copyInto(s);

return s;

}

public void processRequest() {

if(submit==null)

addItem(item);

if(submit.equals("add"))

addItem(item);

else if (submit.equals("remove"))

removeItem(item);

reset();

}

private void reset()

{

submit=null;

item=null;

}

}