求教，第一次使用hibernate，报错Unable to create requested service

小红帽XXX 2016-03-20 02:56:18

如标题所说，第一次使用hibernate但是却报出这个错误，前前后后查找找不到原因，想死的心都有了，刚开始就栽跟头，请社区的大哥大姐帮我看看，谢谢谢谢，下面是详细信息：

报错信息：
三月 20, 2016 2:34:01 下午 org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator initiateService
WARN: HHH000342: Could not obtain connection to query metadata : The application must supply JDBC connections
Exception in thread "main" org.hibernate.service.spi.ServiceException: Unable to create requested service [org.hibernate.engine.jdbc.env.spi.JdbcEnvironment]
at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:244)
at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:208)
at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:189)
at org.hibernate.engine.jdbc.internal.JdbcServicesImpl.configure(JdbcServicesImpl.java:51)
at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.configureService(StandardServiceRegistryImpl.java:94)
at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:217)
at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:189)
at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.handleTypes(MetadataBuildingProcess.java:352)
at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.complete(MetadataBuildingProcess.java:111)
at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.build(MetadataBuildingProcess.java:83)
at org.hibernate.boot.internal.MetadataBuilderImpl.build(MetadataBuilderImpl.java:418)
at org.hibernate.boot.internal.MetadataBuilderImpl.build(MetadataBuilderImpl.java:87)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:692)
at org.fun.test.HibernateTest.main(HibernateTest.java:25)
Caused by: org.hibernate.HibernateException: Access to DialectResolutionInfo cannot be null when 'hibernate.dialect' not set
at org.hibernate.engine.jdbc.dialect.internal.DialectFactoryImpl.determineDialect(DialectFactoryImpl.java:100)
at org.hibernate.engine.jdbc.dialect.internal.DialectFactoryImpl.buildDialect(DialectFactoryImpl.java:54)
at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:137)
at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:35)
at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.initiateService(StandardServiceRegistryImpl.java:88)
at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:234)
... 13 more

测试程序代码：

public static void main(String[] args) {

		UserBean bean = new UserBean();

		bean.setId("001");

		bean.setUsername("redhat");

		bean.setEmail("ersdf@redhat.com");

		bean.setPassword("UJRF");



		Configuration cfg = new Configuration().addResource("hibernate.cfg.xml");

		// *过期方法*解析Hibernate.cfg.xml 然后返回一个已经拥有配置选项的Configuration

		// SessionFactory sf=cfg.configure().buildSessionFactory();

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

		// SessionFactory类似数据库库的一个Connection

		SessionFactory sf = cfg.buildSessionFactory(sr);

		Session session = sf.openSession();

		session.beginTransaction();

		session.save(bean);

		session.getTransaction().commit();

		session.close();

		sf.close();

	}

配置文档信息（hibernate.cfg.xml）：

<hibernate-configuration

        xmlns="http://www.hibernate.org/xsd/hibernate-configuration"

        xsi:schemaLocation="http://www.hibernate.org/xsd/hibernate-configuration hibernate-configuration-4.0.xsd"

        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">

  <session-factory>

    <!-- Database connection settings -->

    <property name="connection.driver_class">oracle.jdbc.driver.OracleDriver</property>

    <property name="connection.url">jdbc:oracle:thin:@localhost:1521:orcl</property>

    <property name="connection.username">funfamily</property>

    <property name="connection.password">1</property>



    <!-- JDBC connection pool (use the built-in) -->

    <!-- <property name="connection.pool_size">1</property> -->



    <!-- SQL dialect -->

    <property name="dialect">org.hibernate.dialect.Oracle10gDialect</property>



    <!-- Enable Hibernate's automatic session context management -->

    <!-- <property name="current_session_context_class">thread</property> -->



    <!-- Disable the second-level cache  -->

    <property name="cache.provider_class">org.hibernate.cache.internal.NoCacheProvider</property>



    <!-- Echo all executed SQL to stdout -->

    <property name="show_sql">true</property>

    

	<property name="javax.persistence.validation.mode">none</property> 

	

    <!-- Drop and re-create the database schema on startup -->

    <!-- <property name="hbm2ddl.auto">update</property> -->

    <mapping resource="fun/bean/login/User.hbm.xml"/>

  </session-factory>

</hibernate-configuration>

使用的是hibernate5.1，jar包列表：
antlr-2.7.7.jar
classmate-1.3.0.jar
dom4j-1.6.1.jar
geronimo-jta_1.1_spec-1.1.1.jar
hibernate-commons-annotations-5.0.1.Final.jar
hibernate-core-5.1.0.Final.jar
hibernate-jpa-2.1-api-1.0.0.Final.jar
jandex-2.0.0.Final.jar
javassist-3.20.0-GA.jar
jboss-logging-3.3.0.Final.jar
ojdbc6.jar
classes12.jar
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哪位大神还请赐教，小的万分感谢

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