cucart.java

一本书中的原代码,有用多例子,很好用

package test;
import javax.servlet.http.*;
import java.util.Vector;
import java.util.Enumeration;
public class CuCart 
{
    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 name)
    {
        item=name;
    }
    public void setSubmit(String s) 
    {
        submit=s;
    }
    public String[] getItems() 
    {
        String[] s=new String[v.size()];
        v.copyInto(s);
        return s;
    }
    public void processRequest(HttpServletRequest request)
    {
        if(submit==null)
            addItem(item);
        if(submit.equals("添加"))
            addItem(item);
        else if (submit.equals("删除"))
            removeItem(item);
        reset();
    }
    private void reset() 
    {
        submit=null;
        item=null;
    }
}