buyaction.java

网上书店后台管理源码基于struts1.2+oracle数据库

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

import java.util.*;

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 org.apache.struts.action.ActionMessage;
import org.apache.struts.action.ActionMessages;
import org.apache.struts.action.DynaActionForm;

import com.dongfang.dao.BookDAO;
import com.dongfang.po.Book;
import com.dongfang.po.Contants;
import com.dongfang.vo.ShopCart;

/** 
 * MyEclipse Struts
 * Creation date: 09-04-2007
 * 
 * XDoclet definition:
 * @struts.action path="/buy" name="bookIdForm" input="/wrong.jsp" scope="request" validate="true"
 */
public class BuyAction 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) {
		DynaActionForm bookIdForm = (DynaActionForm) form;// TODO Auto-generated method stub
		Integer bookId = (Integer)bookIdForm.get("bookId");
		
		BookDAO bookdao = new BookDAO();
		
		ShopCart compShopCart = new ShopCart();
		HttpSession session = request.getSession();
		List shopCartList = (ArrayList)session.getAttribute(Contants.SHOPCART_KEY);
		boolean isBought = false;
		if(shopCartList==null)
		{
			shopCartList = new ArrayList();
		}
		else
		{
			for(int i=0;i<shopCartList.size();i++)
			{
				compShopCart = (ShopCart)shopCartList.get(i);
				if(compShopCart.getBook().getId()==bookId.intValue())
				{
					isBought = true; 
				}
			}
		}
		if(!isBought)
		{
			Book book = bookdao.getBookById(bookId.intValue());
			ShopCart shopCart = new ShopCart();
			shopCart.setBook(book);
			shopCart.setCount(1);
			shopCart.setPrice(book.getSaleprice());
			shopCartList.add(shopCart);	
			session.setAttribute(Contants.SHOPCART_KEY,shopCartList);
			return mapping.findForward("toShopCart");
		}
		else
		{
			ActionMessages errors = new ActionMessages();
			errors.add("isBought", new ActionMessage("errors.alreadyBought"));
			if(!errors.isEmpty())
			{
				this.saveErrors(request, errors);
			}
			return mapping.findForward("toWrong");
		}
		
	}
}