hibernate-3.2.5.ga 报java.lang.ExceptionInInitializerError是什么原因？

[zhanglixinsd]

各位大侠，这几天按照网上的介绍，在Eclpse环境里面，作了个简单的Hibernate例子，运行，但是报错：java.lang.ExceptionInInitializerError，具体的代码以及配置文件如下：

hibernate.cfg.xml配置内容：
<?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="connection.username">CBS</property>
<property name="connection.url">
jdbc:oracle:thin:@localhost:1521:CBSTJ
</property>
<property name="dialect">
net.sf.hibernate.dialect.OracleDialect
</property>
<property name="jdbc.fetch_size">50</property>
<property name="jdbc.batch_size">25</property>
<property name="show_sql">true</property>
<property name="use_outer_join">false</property>
<property name="connection.password">admin</property>
<property name="connection.driver_class">
oracle.jdbc.driver.OracleDriver
</property>
<mapping resource="TRegister.hbm.xml"/>

</session-factory>
</hibernate-configuration>

TRegister.hbm.xml的内容：

<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<!--
Mapping file autogenerated by MyEclipse - Hibernate Tools
-->
<hibernate-mapping>
<class name="hibernate.PO.TRegister" table="t_register">
<id name="id" type="java.lang.Integer">
<column name="id" />
<generator class="increment" />
</id>
<property name="userName" type="java.lang.String">
<column name="userName" length="30" />
</property>
<property name="userPwd" type="java.lang.String">
<column name="userPwd" length="30" />
</property>
<property name="sex" type="java.lang.String">
<column name="sex" length="10" />
</property>
<property name="age" type="java.lang.Integer">
<column name="age" />
</property>
</class>
</hibernate-mapping>
配置文件都放在classes下面。


HibernateUtil.java获取唯一Session实例：

package hibernate;

import org.hibernate.HibernateException;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;

public class HibernateUtil{

private static final SessionFactory sessionFactory;

static
{
try
{
Configuration config = new Configuration().configure("/hibernate.cfg.xml");

sessionFactory = config.buildSessionFactory();
}
catch(Throwable e)
{ System.out.println("ExceptionInInitializerError----------" );
throw new ExceptionInInitializerError(e);
}
}

public static final ThreadLocal session = new ThreadLocal();

public static Session currentSession() throws HibernateException
{
Session s = (Session)session.get();

//Open a new Session,if this Thread has none yet
if(s == null || !s.isOpen())
{
s = sessionFactory.openSession();
session.set(s);
}
return s;
}

public static void closeSession() throws HibernateException
{
Session s = (Session)session.get();
session.set(null);
if(s != null)
s.close();
}

}

当运行到：sessionFactory = config.buildSessionFactory()时，就报上面那个错java.lang.ExceptionInInitializerError。
我在工程的LIB下面，我把hibernate-3.2.5.ga.tar.gz里面的JAR都已经放进去（包括hibernate3.jar），构建路径当然也已经指向\WEB-INF\lib了，但是还是报错，是什么原因呢？

[zhanglixinsd]

搞定了，原因：
1、配置文件的 net.sf.hibernate.dialect.OracleDialect 应该写为org.hibernate.dialect.OracleDialect；
2、把LIB下面所有JAR删掉，然后再把需要的JAR全部拷贝进去

[ma_mei]

我的不行哎...