mainaction.java

java做的 公交车查询系统....毕业设计

//进入main.jsp主页时,加载车次列表和站点列表
package gongjiaochexitong.gongjiaoche.main_pkg;

import gongjiaochexitong.gongjiaoche.*;
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 mainAction 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();
		System.out.println("正在处理中...");
		
		try {			
			session.setAttribute(constants.CHECI_LIST_KEY,procedure.getCheCi_List(db));
			session.setAttribute(constants.ZHANDIAN_LIST_KEY,procedure.getZhanDian_List(db));
		} catch (Exception e) {
			e.printStackTrace();
		}
		
		db.conn_Close();     //close connection
		return mapping.findForward("tomain");
	}
	
}