Hibernate初始化

建立一个hibernate的初始化工具类，代码如下：   

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

public final class HibernateUtil {
    private static SessionFactory sessionFactory;
    private HibernateUtil(){}
    
    static {
        Configuration config = new Configuration().configure();
        sessionFactory = config.buildSessionFactory();
    }
    
    public static SessionFactory getSessionFactory(){
        return sessionFactory;
    }
    public static Session getSession() {
        return sessionFactory.openSession();
    }

}

调用的话就用如下代码，方法如下

public void SaveUser() {
        Session session = null;
        Transaction tx;
        try {
            session = HibernateUtil.getSession();
            tx = session.beginTransaction();
            
            session.save(User);
            tx.commit();
        }catch(HibernateException e){
            if(tx!=null)
                tx.rollback();
            throw e;
        }finally{
            if(session != null) {
                session.close();
            }
        }
        
    }