control.java

来自「用STRUTS ,HIBERNATE, SPRING 三种框架整合做的实战项目」· Java 代码 · 共 54 行

package com.ghy.data.order;


import java.util.ArrayList;
public class Control  {
	
	public ArrayList addGoods(OrderItem orderItem , ArrayList arrayList) {
		if (arrayList.size()==0) {
			arrayList.add(orderItem);
		}
		else {
			boolean find = false;
			for (int i = 0; i < arrayList.size(); i++) {
				OrderItem orderItem1 = (OrderItem) arrayList.get(i);
				// 如果存在直接修改购物车中相应物品信息
				if (orderItem1.getBookid().equals(orderItem.getBookid())) {
					// 修改数量
					orderItem1.setAmount(orderItem1.getAmount() + 1);
					// 修改总价
					orderItem1.setSubtotal();
					// 更新该物品信息
					arrayList.set(i, orderItem1);
					find = true;
					break;
				}
			}
			// 如果不存在，则添加这个物品
			if (!find) {
				arrayList.add(orderItem);
			}
		}
		return arrayList ;
	}
	//第一个参数为FORM过来的集合，第二个参数为CART过来的集合
	public ArrayList updateGoods(ArrayList listFromOrder , ArrayList listFromCart) {
		OrderItem orderItem1 ;
		OrderItem orderItem2 ;
		ArrayList arrayList = new ArrayList();
		for (int i = 0; i < listFromCart.size(); i++)
		{
			 orderItem1 = (OrderItem)listFromOrder.get(i);
			 orderItem2 = (OrderItem)listFromCart.get(i);
			 if(orderItem1.getChecked()==null)
			 {
				 orderItem2.setAmount(orderItem1.getAmount());
				 orderItem2.setSubtotal(); 
				 arrayList.add(orderItem2);
			 }
		}
		return arrayList ;
		
	}
}