在Spring+Hibernate的环境中如何通过编程模式来实现数据库连接？

在Spring+Hibernate的环境中如何通过编程模式来实现数据库连接？

public class LocalSessionFactoryBeanTest {


	public static DataSource getDataSource(){
		
		BasicDataSource ds = new BasicDataSource();
		ds.setDriverClassName("com.microsoft.jdbc.sqlserver.SQLServerDriver");
		ds.setUrl("jdbc:microsoft:sqlserver://192.168.0.100:1433;DatabaseName=CMCS3");
		ds.setUsername("sa");
		ds.setPassword("developer");
		
		return (DataSource)ds;
		
	}

	public static SessionFactory getSessionFactory(DataSource ds) {
		
		LocalSessionFactoryBean factory = new LocalSessionFactoryBean();
		
		
		Properties p = new Properties();
		p.put("hibernate.dialect", "org.hibernate.dialect.SQLServerDialect");
		p.put("hibernate.show_sql", "true");
		
		
		Properties p1 = new Properties();
		ArrayList<String> list = new ArrayList<String>();
		list.add("classpath*:com/sky/frame/domain/*.hbm.xml");
		p1.put("mappingLocations", list);
		
		factory.setDataSource(ds);
		factory.setHibernateProperties(p);

		return (SessionFactory)factory.getObject();
	}
	
	public static void main(String[] args){
		DataSource ds = getDataSource();
		SessionFactory sf = getSessionFactory(ds);
		Session session = sf.openSession();
		System.out.println(session.toString());
		session.close();
	}

似乎这样可以，但是最是不能通过factory.getObject()获得SessionFactory,而是得到Null。哪里有问题？大家给看看。