1.         // TODO Auto-generated method stub
   
2.                 Configuration cfg=new Configuration();
   
3.                 cfg.configure();
   
4.                 SessionFactory sf=cfg.buildSessionFactory();
   
5.                 Session session=sf.openSession();
   
6.                 User user=new User();
   
7.                 user.setBirthday(new Date());
   
8.                 user.setId(1);
   
9.                 user.setName("xiaoye");
   
10.                 session.save(user);
    
11.                 session.close();
    
12.                 System.out.println("end")

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下面是hibernate.cfg.xml配置

1. <!DOCTYPE hibernate-configuration PUBLIC
   
2.         "-//Hibernate/Hibernate Configuration DTD 3.0//EN"
   
3.         "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
   
4. 
   
5. <hibernate-configuration>
   
6.         <session-factory>
   
7.                 <property name="hibernate.connection.driver_class">oracle.jdbc.driver.OracleDriver</property>
   
8.                 <property name="connection.url">jdbc:oracle:thin:@127.0.0.1:1521:OracleDB</property>
   
9.                 <property name="connection.username">scott</property>
   
10.                 <property name="connection.password">tiger</property>
    
11.                 <property name="dialect">org.hibernate.dialect.Oracle9iDialect</property>
    
12.                 <property name="hibernate.hbm2ddl.auto">create</property>
    
13.                 <mapping resource="com/xiaoye/hibernate/User.hbm.xml"/>
    
14.         </session-factory>
    
15. </hibernat

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下面是运行结果：这是为什么啊 ？我用的是oracle9i

1. Exception in thread "main" java.lang.NullPointerException
   
2.         at org.hibernate.engine.jdbc.internal.JdbcServicesImpl.configure(JdbcServicesImpl.java:217)
   
3.         at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.configureService(StandardServiceRegistryImpl.java:88)
   
4.         at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:159)
   
5.         at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:131)
   
6.         at org.hibernate.cfg.Configuration.buildTypeRegistrations(Configuration.java:1834)
   
7.         at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1792)
   
8.         at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1877)
   
9.         at com.xiaoye.test.Test.main(Test.java:21)
   

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楼主您好如果问题得到解决的话.请修改主题分楼哦

能不能把你的这个项目的所有文件贴出来 我看看 还有 Hibernate的数据库操作要基于事务  你的事务开启和提交要写上 确保操作的正确性