cart.java

webWork+Spring+Hibernate整合开发网络书城,通过这个项目

package org.thj.bookstore.model;

import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;

import org.thj.bookstore.vo.Book;
import org.thj.bookstore.vo.Orderitem;

public class Cart {

	protected Map<Integer,Orderitem> items;
	
	public Cart(){
		
		if(items == null){
			items = new HashMap<Integer, Orderitem>();
		}
	}
	
	public void addBook(Integer bookid,Orderitem orderitem){
		
		if(items.containsKey(bookid)){
			
			Orderitem _orderitem = items.get(bookid);
			_orderitem.setQuantity(_orderitem.getQuantity() + orderitem.getQuantity());
			items.put(bookid,_orderitem);
		}
		else{
			
			items.put(bookid, orderitem);
		}
	}
	
	public void updateCart(Integer bookid,int quantity){
		
		Orderitem orderitem = items.get(bookid);
		orderitem.setQuantity(quantity);
		items.put(bookid,orderitem);
	}
	
	public int getTotalPrice(){
		
		int totalPrice = 0;
		for(Iterator it = items.values().iterator();it.hasNext();){
			
			Orderitem orderitem = (Orderitem)it.next();
			Book book = orderitem.getBook();
			int quantity = orderitem.getQuantity();
			totalPrice += book.getPrice() * quantity;
		}
		return totalPrice;
	}

	public Map<Integer, Orderitem> getItems() {
		return items;
	}
	
	
}