shoppingcart.java

来自「Begining JSP Web Development外文书籍源代码」· Java 代码 · 共 55 行

package com.wrox.sessions;

import java.util.Vector;
import javax.servlet.http.HttpServletRequest;

public class ShoppingCart extends Object {

  private Vector cart = null;
  String product = null;
  String submit = null;

  public ShoppingCart() {
    cart = new Vector();
  }

  public void setProduct(String product) {
    this.product = product;
  } 

  public void setSubmit(String submit) {
    this.submit = submit;
  } 

  public Vector getProducts() {
    return cart;
  } 

  public void addProduct(String product) {
    cart.add(product);
  } 

  public void removeProduct(String product) {
    cart.remove(product);
  } 

  public void processRequest(HttpServletRequest req) {
    if (submit != null) {
      if (submit.equals("add")) {
        addProduct(product);
      } else {
        removeProduct(product);
      }
      reset();
    } 
  } 

  public void reset() {
    submit = null;
    product = null;
  } 
}