readaction.java

来自「《v512工作室_Java高端培训系列视频》(Java JSP Servlet 」· Java 代码 · 共 63 行

/*
 * Generated by MyEclipse Struts
 * Template path: templates/java/JavaClass.vtl
 */
package com.v512.guestbook.web.action;

import java.sql.SQLException;
import java.util.List;

import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.sql.DataSource;
import com.v512.guestbook.model.*;

import org.apache.commons.dbutils.QueryRunner;
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.commons.dbutils.handlers.BeanListHandler;
/** 
 * MyEclipse Struts
 * Creation date: 11-14-2006
 * 
 * XDoclet definition:
 * @struts.action
 */
public class ReadAction extends Action {
    /*
     * Generated Methods
     */

    /** 
     * Method execute
     * @param mapping
     * @param form
     * @param request
     * @param response
     * @return ActionForward
     */
    public ActionForward execute(ActionMapping mapping, ActionForm form, HttpServletRequest request,
	    HttpServletResponse response) {
	String sql="select * from guestbook order by id desc";
	
	try {
	    Context context = new InitialContext();
	    DataSource ds = (DataSource) context.lookup("java:/comp/env/jdbc/oracleds");
	    QueryRunner qr = new QueryRunner(ds);
	   List list=(List) qr.query(sql, new BeanListHandler(Guestbook.class));
	   request.setAttribute("guestbook.display.list", list);	    
	    
	} catch (NamingException e) {
	    e.printStackTrace();
	} catch (SQLException e) {	   
	    e.printStackTrace();
	}	
	
	return mapping.findForward("guestbook.display");
    }
}