songmanager.java

来自「ktv点歌系统前台收银有开包房」· Java 代码 · 共 40 行

package com.ktv.action.front;

import java.util.ArrayList;
import java.util.List;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.actions.DispatchAction;

import com.ktv.dao.front.SongDAO;
import com.ktv.entity.Song;

public class SongManager extends DispatchAction {

	public ActionForward addSelectSong(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response) {
		
		HttpSession session=request.getSession();
		String songId = request.getParameter("songId").toString();
		List<Song> list = (List)session.getAttribute("songlist");
		if(list==null){
			list= new ArrayList<Song>();
			
		}else{
			SongDAO songdao= new SongDAO();
			Song  song=(Song)songdao.findById(Integer.valueOf(songId));
			list.add(song);
		}
		session.setAttribute("songList",list);
		return null;
	}
			
	
}