blogdao.java

java web开发技术方案宝典

package com.wy.dao;

import java.util.*;

import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.hibernate.cfg.Configuration;

import com.wy.actionForm.Tb01blog;

public class BlogDao {
	private static SessionFactory sessionFactory = null;
	static {
		try {
			Configuration config = new Configuration().configure();
			sessionFactory = config.buildSessionFactory();
		} catch (Exception e) {
			System.out.println(e.getMessage());
		}
	}

	public boolean saveObject(Object object) {
		Session session = sessionFactory.openSession();
		Transaction tx = null;
		try {
			tx = session.beginTransaction();
			session.save(object);
			tx.commit();
			return true;
		} catch (Exception e) {
			System.out.println(e);
			return false;
		} finally {
			session.close();
		}
	}

	public boolean deleteObject(int sign) {
		Session session = sessionFactory.openSession();
		Transaction tx = null;
		try {
			tx = session.beginTransaction();
			Tb01blog tb01blog = (Tb01blog) session.load(Tb01blog.class, sign);
			session.delete(tb01blog);
			tx.commit();
			return true;
		} catch (Exception e) {
			System.out.println(e);
			return false;
		} finally {
			session.close();
		}
	}

	public List<Tb01blog> queryTb01blog() {
		List<Tb01blog> list = new ArrayList();
		Session session = sessionFactory.openSession();
		String hql = "from Tb01blog";
		try {
			Query query = session.createQuery(hql);
			list = query.list();
		} catch (Exception e) {
			System.out.println(e);

		} finally {
			session.close();
		}
		return list;
	}

	public Object queryTb01blog(int id) {
		Session session = sessionFactory.openSession();
		Transaction tx = session.beginTransaction();
		String hql = "from Tb01blog where id='" + id + "'";
		Object object = null;
		try {
			Query query = session.createQuery(hql);
			object = (Object) query.uniqueResult();
		} catch (Exception e) {
			System.out.println(e.getMessage());
		}
		tx.commit();
		session.close();
		return object;
	}

	public static void main(String[] args) {
		BlogDao dao = new BlogDao();
		System.out.println(dao.queryTb01blog());
	
	
	}

}