cartbean.java

采用MVC模式,完成了对用户的管理(删除用户),对图书的管理(增,删,改,查),订单管理(购买图书,删除图书,修改图书的数量).

package cart;

import javax.ejb.Stateful;
import java.util.*;
import javax.ejb.Remove;
@Stateful
public class CartBean implements CartRemote{
    private String customerName;
    private ArrayList<String> contents;

    public void initialize(String person)// throws BookException 
    {      
            customerName = person;
            contents = new ArrayList<String>();
    }
    public String getCustomerName(){
    return customerName;
    }
  

    public void addBook(String title) {
        contents.add(title);
    }
    public void removeBook(String title)// throws BookException
    {
        boolean result = contents.remove(title);
        }
    public List<String> getContents() {
        return contents;
    }
    @Remove()
    public void remove() {
        contents = null;
    }
}