delorderaction.java

ShoppingOnline 是一个网上购物系统的源代码 由eclipse+jsp+tomcat+strust

package cn.com.shoppingonline;

import java.util.List;
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;

public final class DelOrderAction extends Action{  
	public ActionForward execute(
		ActionMapping mapping,
		ActionForm form,
		HttpServletRequest request,  
		HttpServletResponse response) throws Exception {
			
   		DynaActionForm orderNoForm = (DynaActionForm) form;         
		String 	orderno = (String)orderNoForm.get("orderNo");
		
		ActionMessages errors = new ActionMessages();
		HttpSession session = request.getSession();
		Member member = (Member)session.getAttribute(Constants.LOGIN_USER_KEY);
		/*
		 * 判断用户是否登陆
		 */		
		if (member==null) {
			errors.add(ActionMessages.GLOBAL_MESSAGE,
				new ActionMessage("errors.userUnLogin"));
			if (!errors.isEmpty()) {
				saveErrors(request, errors);
			} 
  			return  mapping.findForward("toWrong");  //用户未登陆
		}
		else {
			//利用Hibernate进行数据库中相关的操作
			DbOperate db=new DbOperate();
			Order order=db.getOrder(orderno);
			db.delete(order);
			List orderList=db.getOrders(member.getId());
			session.setAttribute(Constants.ORDER_LIST_KEY,orderList);
		   	return (mapping.findForward("toOrderList"));					
		}
 	}
 	
}