buyaction.java

一个简单的AJAX图书展示平台

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

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
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.ascent.bean.Book;
import com.ascent.util.BuyCat;
import com.ascent.util.BuyBook;
import java.util.Vector;;
/** 
 * MyEclipse Struts
 * Creation date: 06-06-2007
 * 
 * XDoclet definition:
 * @struts.action validate="true"
 */
public class BuyAction extends BaseAction 
{
	/*
	 * 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) 
	{
		
			  int id=Integer.parseInt(request.getParameter("bookId"));
			  Book book=this.getBookService().findByBookId(id);
			  Vector  vt=(Vector)request.getSession().getAttribute("buycat");
			try
			{
			  if(!vt.isEmpty())
			  {
				  System.out.print("容器是否为空检验完成");
				  vt.add(book);
				  System.out.print("容器存入东西完成完成");
				  request.getSession().setAttribute("buycat",vt);
				  return mapping.findForward("show");
			  }	
			}
			catch(Exception e)
			{
				  Vector vtt=new Vector(3,2);
				  vt.addElement("嘿嘿");
				 // vt.addElement(book);
				  request.getSession().setAttribute("buycat",vtt);
				  return mapping.findForward("show");
			}
			return mapping.findForward("error");
				  
		
	}
}