shoppingcart.java

来自「JDBC数据库高级编程源代码」· Java 代码 · 共 42 行

package jdbcbook.ch05;

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

// 一个简单的购物车处理程序
public class ShoppingCart
{
	Vector vtBooks = null;

	// 构造函数
	public ShoppingCart()
	{
		vtBooks = new Vector();
	}

	// 处理页面请求
	public void processRequest( HttpServletRequest request )
	{
		String submit = request.getParameter( "submit" );
		if( submit!=null )
		{
			String book = request.getParameter( "book" );
			if( "Add".equals( submit ) )
			{
				vtBooks.add( book );
			}
			else
			{
				vtBooks.remove( book );
			}

		}
	}

	// 返回购物车中的图书
	public Vector getBooks()
	{
		return vtBooks;
	}
}