src/org/bs/servlet/site/IndexServlet.java

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package org.bs.servlet.site;

import java.io.IOException;
import java.util.Calendar;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;

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

import org.bs.model.Page;
import org.bs.service.ArticleService;
import org.bs.service.ChannelService;
import org.bs.service.MessageService;
import org.bs.servlet.backend.BaseServlet;
import org.bs.utils.JDBCHandler;
import org.bs.utils.PageContext;

public class IndexServlet extends BaseServlet {
	private ArticleService articleService ;
	private ChannelService channelService;
	private MessageService messageService;
	public void nav(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		request.setAttribute("channels", channelService.search());
		request.getRequestDispatcher("/site/nav.jsp").include(request, response);
	}
	public void headline(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		request.setAttribute("articles", articleService.headline());
		request.getRequestDispatcher("/site/headline.jsp").include(request, response);
	}
	public void recommend(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		request.setAttribute("articles", articleService.recommend());
		request.getRequestDispatcher("/site/recommend.jsp").include(request, response);
	}
	public void latest(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		request.setAttribute("articles", articleService.latest());
		request.getRequestDispatcher("/site/latest.jsp").include(request, response);
	}
	public void channelIndexById(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		int id = Integer.parseInt(request.getParameter("id"));
		request.setAttribute("articles", articleService.channelIndexById(id));
		request.getRequestDispatcher("/site/channel_index.jsp").include(request, response);
	}

	public void tec(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		int id = Integer.parseInt(request.getParameter("id"));
		request.setAttribute("articles", articleService.channelIndexById(id));
		request.getRequestDispatcher("/site/tec.jsp").include(request, response); 
	}
	public void relatedArticles(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		int id = Integer.parseInt(request.getParameter("id"));
		request.setAttribute("articles", articleService.channelIndexById(id));
		request.getRequestDispatcher("/site/relatedArticles.jsp").include(request, response); 
	}
	public void topic(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		int id = Integer.parseInt(request.getParameter("id"));
		request.setAttribute("channel", channelService.findById(id));
		request.setAttribute("articles", articleService.channelIndexById(id));