HibernateUtil

 package com.ssh.util;

 import org.hibernate.SessionFactory;
 import org.hibernate.boot.registry.StandardServiceRegistryBuilder;
 import org.hibernate.cfg.Configuration;
 import org.hibernate.service.ServiceRegistry;
 import org.hibernate.tool.hbm2ddl.SchemaExport;

 public class HibernateUtil {
     private static final SessionFactory sessionFactory = buildSessionFactory();

     private static SessionFactory buildSessionFactory() {
         try {

             //Hibernate 4.x 时代
             Configuration cfg = new Configuration();
             cfg.configure();

 //            SchemaExport se = new SchemaExport(cfg);
 //            se.create(true, true);

             ServiceRegistry sr =
                 new StandardServiceRegistryBuilder()
                     .applySettings(cfg.getProperties())
                     .build();

             SessionFactory factory = cfg.buildSessionFactory(sr);

             return factory;
             // Create the SessionFactory from hibernate.cfg.xml
            // return new Configuration().configure().buildSessionFactory();
         }
         catch (Throwable ex) {
             // Make sure you log the exception, as it might be swallowed
             System.err.println("Initial SessionFactory creation failed." + ex);
             throw new ExceptionInInitializerError(ex);
         }
     }

     public static SessionFactory getSessionFactory() {
         return sessionFactory;
     }
 }