2.hql条件查询:工具类

package com.bjpowernode.hibernate;

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

public class HibernateUtils {

private static SessionFactory factory;

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

//建立SessionFactory
factory = cfg.buildSessionFactory();
}catch(Exception e) {
e.printStackTrace();
}
}

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

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

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

package com.bjpowernode.hibernate;

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

/**
* 将hbm生成ddl
* @author Administrator
*
*/
public class ExportDB {

public static void main(String[] args) {

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

SchemaExport export = new SchemaExport(cfg);
export.create(true, true);
}
}