bookbuyaction.java

本系统实现了网上书店功能

//Created by MyEclipse Struts
// XSL source (default): platform:/plugin/com.genuitec.eclipse.cross.easystruts.eclipse_4.1.0/xslt/JavaClass.xsl

package com.action;

import java.util.Vector;

import javax.servlet.ServletContext;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import javax.sql.DataSource;

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.DynaActionForm;

import com.bean.Book;
import com.bean.ShopCart;
import com.util.DBBook;

/** 
 * MyEclipse Struts
 * Creation date: 12-20-2006
 * 
 * XDoclet definition:
 * @struts.action path="/bookBuy" name="bookDetailForm" input="/failure.jsp" scope="request" validate="true"
 * @struts.action-forward name="success" path="/bookShopCart.jsp"
 * @struts.action-forward name="failure" path="/failure.jsp"
 */
public class BookBuyAction extends Action {

	// --------------------------------------------------------- Instance Variables

	// --------------------------------------------------------- Methods

	/** 
	 * Method execute
	 * @param mapping
	 * @param form
	 * @param request
	 * @param response
	 * @return ActionForward
	 * @throws Exception 
	 */
	public ActionForward execute(
		ActionMapping mapping,
		ActionForm form,
		HttpServletRequest request,
		HttpServletResponse response) throws Exception {
		DynaActionForm bookDetailForm = (DynaActionForm) form;
		String bookId = bookDetailForm.getString("bookId");
		HttpSession session =request.getSession();
		ServletContext context = servlet.getServletContext();
		DataSource ds = (DataSource)context.getAttribute("conmysql");
		Vector shopCartList = (Vector)session.getAttribute("SHOPCARTLIST");
		if(shopCartList==null||shopCartList.size()<1){
			shopCartList = new Vector();
		}
		boolean bought = false;
		if(shopCartList!=null){
			for(int i=0;i<shopCartList.size();i++){
				ShopCart shopCartItem=(ShopCart)shopCartList.get(i);
				if(shopCartItem.getBookID()==Integer.parseInt(bookId))
					bought=true;
			}
		}
		if(bought==false){
		DBBook dbbook = new DBBook(ds);
		Book book = dbbook.getBookDetail(bookId);
		ShopCart shopCart = new ShopCart();
		
		shopCart.setBookID(book.getBookID());
		shopCart.setAuthor(book.getAuthor());
		shopCart.setBookName(book.getBookName());
		shopCart.setContent(book.getContent());
		shopCart.setBookClassID(book.getBookClassID());
		shopCart.setIsbn(book.getIsbn());
		shopCart.setPrice(book.getPrice());
		shopCart.setPublishtime(book.getPublishtime());
		shopCart.setCount(1);
				
		shopCartList.add(shopCart);
		session.setAttribute("SHOPCARTLIST",shopCartList);
		}
		return mapping.findForward("success");		
	}

}