hibernate工具类更具配置文件创建table,和创建currentsession..

==============================根据hibernate配置文件(hibernate.cfg.xml和*.hbm.xml文件)创建table

package org.john.november.util;

import org.hibernate.cfg.Configuration;
import org.hibernate.tool.hbm2ddl.SchemaExport;

public class ExportDB {

public static void main(String[] args) {

//读取hibernate.cfg.xml文件
Configuration cfg = new Configuration().configure();

SchemaExport export = new SchemaExport(cfg);

export.create(true, true);
}
}
======================hibernate ,获取currentsession工具类==============

package org.john.november.util;

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

public class HibernateUtils {

private static SessionFactory factory;

static {
try {
Configuration cfg = new Configuration().configure();
factory = cfg.buildSessionFactory();
}catch(Exception e) {
e.printStackTrace();
}
}

public static SessionFactory getSessionFactory() {
return factory;
}

public static Session getSession() {
return factory.openSession();
}

public static void closeSession(Session session) {
if (session != null) {
if (session.isOpen()) {
session.close();
}
}
}
}