hibernate获取SessionFactory失败 咋办？
如题 代码：

Java code

package com.test.tree.client;import org.hibernate.cfg.Configuration;import org.hibernate.Session;import org.hibernate.SessionFactory;import com.test.pojo.Book;public class HibernateTest{    public static void main(String[] args)    {        Configuration cfg = new Configuration().configure();                SessionFactory factory = cfg.buildSessionFactory();                Session session = factory.openSession();;                session.beginTransaction();                Book book  = new Book();        book.setBook_name("轻量级JavaEE企业应用实战");        book.setBook_editor("李刚");        book.setBook_pub("电子工业出版社");        book.setBook_price((float) 99.00);                session.save(book);        session.getTransaction().commit();            }}

错误代码：
Exception in thread "main" java.lang.NullPointerException
at org.hibernate.cfg.SettingsFactory.buildSettings(SettingsFactory.java:169)
at org.hibernate.cfg.Configuration.buildSettingsInternal(Configuration.java:2833)
at org.hibernate.cfg.Configuration.buildSettings(Configuration.java:2829)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1840)
at com.test.tree.client.HibernateTest.main(HibernateTest.java:15)


为啥获取不到sessionfactory呢？

[解决办法]
很有可能跟你的JAR包有关，看一下
[解决办法]
很有可能是你的hibernate配置文件里面有错误
[解决办法]
Configuration cfg = new Configuration();
SessionFactory sf =cfg.configure().buildSessionFactory();

这样试试看