addorderlineaction.java

该系统的主要功能是

/*
 * Generated by MyEclipse Struts
 * Template path: templates/java/JavaClass.vtl
 */
package com.laoniu.web.action;

import java.util.Map;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;

import com.laoniu.bean.Book;
import com.laoniu.bean.Orderline;
import com.laoniu.bean.ShoppingCart;
import com.laoniu.web.form.AddOrderlineForm;

/** 
 * MyEclipse Struts
 * Creation date: 04-28-2008
 * 
 * XDoclet definition:
 * @struts.action path="/addOrderline" name="addOrderlineForm" input="/listBookStore.jsp" scope="request" validate="true"
 * @struts.action-forward name="return" path="/listBookStore.jsp"
 */
public class AddOrderlineAction extends Action {
	/*
	 * Generated Methods
	 */

	/** 
	 * Method execute
	 * @param mapping
	 * @param form
	 * @param request
	 * @param response
	 * @return ActionForward
	 */
	public ActionForward execute(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response) {
		AddOrderlineForm addOrderlineForm = (AddOrderlineForm) form;
		
		//获得的数据
		Long id=new Long(addOrderlineForm.getId());
		Long num=new Long(addOrderlineForm.getNum());
		HttpSession session=request.getSession();
		ShoppingCart cart=(ShoppingCart)session.getAttribute("cart");
		
		Map<Long,Book> map=(Map<Long,Book>)session.getServletContext().getAttribute("books");
		Book book=(Book)map.get(id);
		//封装类，这里只存储了id和数量
		Orderline orderline=new Orderline();
		orderline.setBook(book);
		orderline.setNum(num);
		//添加订单明细
		cart.addLine(orderline);
		//修改后，是不是还得把属性再放回Session中。
		//session.setAttribute("cart", cart);
		return mapping.findForward("return");
	}
}