shoppingcar.java

JSP课件以及一个网上书店系统程序,带数据库

package test.db;
import javax.servlet.http.*;
//import javax.servlet.http.*;
import java.util.Vector;
import java.util.Enumeration;
public class ShoppingCar {
  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("Add")) AddItem(item);
    else if(submit.equals("Remove")) this.RemoveItem(item);
    reset();
  }
  private void reset(){
    submit=null;
    item=null;
  }
}