zhandian_action.java

java做的 公交车查询系统....毕业设计

//进入主页面 zhandian.jsp 时,从数据库中取出站点名
package gongjiaochexitong.gongjiaoche.zhandian_pkg;

import gongjiaochexitong.gongjiaoche.*;
import gongjiaochexitong.gongjiaoche.main_pkg.*;

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 javax.servlet.ServletContext;
import javax.sql.DataSource;

public final class zhandian_Action extends Action{
	
	public ActionForward execute(
			ActionMapping mapping,
			ActionForm form,
			HttpServletRequest request,  
			HttpServletResponse response) throws Exception {		
			
			ServletContext context = servlet.getServletContext();
			DataSource dataSource = (DataSource)context.getAttribute("db_gongjiaoche");
			conn_Bus db = new conn_Bus(dataSource);
			
			HttpSession session = request.getSession();		
			
			//String member=session.getAttribute(constants.MEMBER).toString();
			//String power=session.getAttribute(constants.POWER).toString();
			
			try {				
				session.setAttribute(constants.ZHANDIAN_LIST_KEY,procedure.getZhanDian_List(db));
			} catch (Exception e) {
				e.printStackTrace();
			}
			
			db.conn_Close();     //close connection
			return mapping.findForward("tozhandian");
		}

}