usercontainer.java

采用Struts框架做的网上啤酒买卖系统

package com.cavaness.beer4all.framework;

import java.util.Locale;
import javax.servlet.http.HttpSessionBindingListener;
import javax.servlet.http.HttpSessionBindingEvent;
import com.cavaness.beer4all.common.view.UserView;

//这个类用来储存指定的用户信息，继承了HttpSessionBindingListener接口
public class UserContainer implements HttpSessionBindingListener {
  private ShoppingCart cart = null;  //用户的购物车
  private UserView userView = null;   //用户的信息
  private Locale locale;     //用户系统的locale信息

  //构造函数
  public UserContainer() {
    super();
    initialize();        //初始化
  }

  //当前会话被撤消时执行该方法
  public void valueUnbound(HttpSessionBindingEvent event) {
    cleanUp();        //清处用户信息
  }

  public ShoppingCart getCart() {
    return cart;     //返回一个购物车信息
  }

  public void setCart(ShoppingCart newCart) {
    cart = newCart;    //设置一个购物车信息
  }

  public void setLocale(Locale aLocale) {
    locale = aLocale;    //设置locale信息
  }

  public Locale getLocale() {
    return locale;    //获取系统locale信息
  }

  public void valueBound(HttpSessionBindingEvent event) {
  // interface method.//必需实现的接口方法
  }

  public UserView getUserView() {
    return userView;     //获取用户信息
  }

  public void setUserView(UserView newView) {
    userView = newView;   //设置一个用户信息
  }

  private void initialize() {
    cart = new ShoppingCart();     //新建一个用户的购物车
  }

  public void cleanUp() {
    setUserView( null );          //清除用户信息
  }
}