checi_showaction.java

java做的 公交车查询系统....毕业设计

//在checi.jsp页面中,进行显示与更新的处理动作
package gongjiaochexitong.gongjiaoche.checi_pkg;

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

import java.util.Vector;

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 checi_showAction extends Action{
	
	public ActionForward execute(
			ActionMapping mapping,
			ActionForm form,
			HttpServletRequest request,  
			HttpServletResponse response) throws Exception {
				
	  checi_showForm checi_showform = (checi_showForm)form;
	  int checihao = checi_showform.getChecihao();	  
			
	  ServletContext context = servlet.getServletContext();
	  DataSource dataSource = (DataSource)context.getAttribute("db_gongjiaoche");
	  conn_Bus db = new conn_Bus(dataSource);	  
	  
	  HttpSession session = request.getSession();
	  
	  if(checihao!=0 ){
		  //checi_procedure.showCheCiHao(db,checihao);
	  
	    Vector v_checihao=new Vector();
	    Vector v_journey=new Vector();
	    v_checihao.add(checihao);
	    v_journey.add(procedure.isJourney(db,checihao));
	    try {			
			session.setAttribute(constants.SHOW_CHECIHAO,v_checihao);
			session.setAttribute(constants.SHOW_JOURNEY,v_journey);
			session.setAttribute(constants.SHOW_COURSE,procedure.search_CheCiHao(db,checihao));
		} catch (Exception e) {
			//System.out.println("出现异常:"+e);
			e.printStackTrace();				
	    }
	  
	    db.conn_Close();     //close connection
	    return mapping.findForward("tocheci");
	  }
	  else{
		db.conn_Close();     //close connection
		return mapping.findForward("checi_showError");  
	  }
			
	}

}