commentaction.java

struts hibernate spring实现新闻发布系统含说明文档

/*
 * Generated by MyEclipse Struts
 * Template path: templates/java/JavaClass.vtl
 */
package com.ata.wx.java01b.struts.action;

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

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

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.hibernate.Session;
import org.hibernate.Transaction;

import com.ata.wx.java01b.dao.Comment;
import com.ata.wx.java01b.dao.CommentDAO;
import com.ata.wx.java01b.dao.News;
import com.ata.wx.java01b.dao.NewsDAO;
import com.ata.wx.java01b.dao.User;
import com.ata.wx.java01b.dao.UserDAO;
import com.ata.wx.java01b.struts.form.CommentForm;

/**
 * MyEclipse Struts Creation date: 03-18-2008
 * 
 * XDoclet definition:
 * 
 * @struts.action path="/comment" name="commentForm" input="/browse.jsp"
 *                scope="request" validate="true"
 */
public class CommentAction extends Action {
	/*
	 * Generated Methods
	 */
	CommentDAO commentdao = new CommentDAO();
	UserDAO userdao = new UserDAO();
	NewsDAO newsdao = new NewsDAO();
	/**
	 * Method execute
	 * 
	 * @param mapping
	 * @param form
	 * @param request
	 * @param response
	 * @return ActionForward
	 */
	public ActionForward execute(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response) {
		CommentForm commentForm = (CommentForm) form;
		System.out.println("comment action_________----");
		String content = commentForm.getContent();
		
		String userid = ((User)request.getSession().getAttribute("user")).getUserid();
		User user = (User)userdao.getSession().load(User.class, userid);
		
		String newsid = (String)request.getSession().getAttribute("newsid");
		News news = (News)newsdao.getSession().load(News.class, newsid);
		
		Comment comment = new Comment(user,news,content,new Date());
		Transaction tr = null;
		Session session = commentdao.getSession();
		System.out.println("111111111111111");
		try{
			tr = session.beginTransaction();
			System.out.println("22222222222");
			session.save(comment);
			tr.commit();
		}catch(Exception e){
			e.printStackTrace();
			tr.rollback();
		}finally{
			session.close();
		}
		
		List<News> newslist = newsdao.findNewsAndComment(newsid);
		List<News> newss = new ArrayList<News>();
		List<News> news2 = newsdao.findByProperty("newsid", newsid);
		if (!newslist.isEmpty()) {
			newss.add(newslist.get(0));
			request.getSession().setAttribute("news", newss);
		}else{
			newss.add(news2.get(0));
			request.getSession().setAttribute("news", newss);
		}
		return mapping.findForward("browse");
	}
}