emptyaction.java

来自「利用Mysql数据库、struts框架实现的web系统开发」· Java 代码 · 共 37 行

package com.control.system.user;

import java.util.Collection;

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.bean.system.user.*;
import com.dao.dbcontrol.system.user.*;

public class EmptyAction extends Action 
{
	public ActionForward execute(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response)
			throws Exception 
    {
		UserDBOperation objDBOperation = new UserDBOperation();
		Collection list;
		//user
		list = objDBOperation.userAll();
		
			if(!list.isEmpty()){
				request.setAttribute("userInfo", list);
				return mapping.findForward("user");
			}else{
				request.setAttribute("error","用户信息为空!");
				return mapping.findForward("failure");
			}
		
	}       
}