updateaction.java

jsp+struct网上订票系统

package 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 org.apache.struts.action.ActionMessage;
import org.apache.struts.action.ActionMessages;
import dao.PurchaseDao;
import java.util.Date;
import orm.OrderItem;
import orm.buyList;
import java.util.Vector;
public class UpdateAction extends Action{
	
	public ActionForward execute(ActionMapping map, ActionForm form,
			HttpServletRequest request, HttpServletResponse response) throws Exception {
		ActionMessages errors=new ActionMessages();
	Vector shop=(Vector)request.getSession().getAttribute("shop");
	Vector newshop=new Vector();
	for(int i=0;i<shop.size();i++)
	{
		String number=request.getParameter("num"+i);
		if(number.equals(""))
		{
			errors.add("fail_1",new ActionMessage("adminlog.fail"));
			saveErrors(request,errors);
			return (map.getInputForward());
		}
		buyList mylist=(buyList)shop.elementAt(i);
		String num=request.getParameter("num"+i);
		int newnum=Integer.parseInt(num);
		mylist.number=newnum;
		if(newnum!=0)
		{
			newshop.addElement(mylist);
		}
	}
   request.getSession().setAttribute("shop", newshop);
   return (map.getInputForward());
	}
	
}