detailnewscontroller.java

本人编写的基于spring + spring mvc + hibernate架构的新闻系统

package org.coldice.webapp.controller;

import java.util.Collection;
import java.util.HashMap;
import java.util.Map;

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

import org.apache.commons.lang.StringUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.coldice.model.News;
import org.coldice.service.NewsManager;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.Controller;

public class DetailNewsController implements Controller {
	/** Logger for this class and subclasses */
	protected final Log logger = LogFactory.getLog(getClass());

	private NewsManager newsManager;

	/**
	 * @param newsManager
	 *            the newsManager to set
	 */
	public void setNewsManager(NewsManager newsManager) {
		this.newsManager = newsManager;
	}

	protected Object formBackingObject(HttpServletRequest request)
			throws ServletException {

		String id = request.getParameter("newsid");

		if (StringUtils.isNotEmpty(id)) {
			int newsid = Integer.parseInt(id);
			return newsManager.getNews(newsid);
		} else {
			return new News();
		}
	}

	public ModelAndView handleRequest(HttpServletRequest request,
			HttpServletResponse response) throws Exception {

		if (logger.isDebugEnabled()) {
			logger.debug("entering 'onSubmit' method...");
		}

		// TODO Auto-generated method stub
		Map<String, Object> newsModel = new HashMap<String, Object>();

		String now = (new java.util.Date()).toString();

		logger.info("returning detailNews view at " + now);

		logger.info("now get the detailNews is begin...");

		/***********************************************************************
		 * 这个类只是用来显示新闻详细信息
		 */
		Collection newsDetail = newsManager.listNews().
		// newsModel.put("news", nn);
		logger.info("completed!");
		return new ModelAndView("detailNews", "model", newsModel);
	}

}