Hibernate中利用配置文件（hbm）自动生成数据库表

package test;

import java.io.File;

import org.hibernate.HibernateException;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.hibernate.cfg.Configuration;
import org.hibernate.tool.hbm2ddl.SchemaExport;

public class HibernateSchemaExport{

    static Session session;

    static Configuration config = null;
    static Transaction tx = null;

    public static void main(String[] args){
        /** *//**
         * 根据映射文件创建数据库结构
         */
        try{
            config = new Configuration().configure(new File(
                    "src/hibernate.cfg.xml"));

            System.out.println("Creating tables...");

            SessionFactory sessionFactory = config.buildSessionFactory();
            session = sessionFactory.openSession();
            tx = session.beginTransaction();

            SchemaExport schemaExport = new SchemaExport(config);
            schemaExport.create(true, true);

            System.out.println("Table created.");

            tx.commit();

        } catch (HibernateException e){
            e.printStackTrace();
            try{
                tx.rollback();
            } catch (HibernateException e1){
                e1.printStackTrace();
            }
        } finally{

        }}

}

hibernate 配置文件：

<?xml version='1.0' encoding='UTF-8'?>
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">

<!-- Generated by MyEclipse Hibernate Tools. -->
<hibernate-configuration>

	<session-factory>
	<property name="cache.provider_class">org.hibernate.cache.EhCacheProvider</property>
 <property name="hibernate.cache.use_second_level_cache">true</property> 
<property name="hibernate.cache.use_query_cache">true</property> 
		<property name="connection.username">root</property>
		<property name="connection.url">
			jdbc:mysql://localhot:3306/test?useUnicode=true&amp;characterEncoding=utf8
</property>
		<property name="dialect">
			org.hibernate.dialect.MySQLDialect
</property>
		<property name="myeclipse.connection.profile">mysql</property>
		<property name="connection.password">root</property>
		<property name="connection.driver_class">
			org.gjt.mm.mysql.Driver
</property>
		<property name="show_sql">true</property>
		<mapping resource="com/main/hbm/sSite.hbm.xml" />
		<mapping resource="com/entity/hbm/disk.hbm.xml" />
		<mapping resource="com/entity/hbm/resource.hbm.xml" />
	</session-factory>
</hibernate-configuration>

如果出现异常：异常An association from the table refers to an unmapped class 参考：

http://topic.csdn.net/t/20041125/09/3586154.html