I just want to write a test example using Hibernate , but error occurred as below
Hibernate version:
Hibernate 2.1.8 , for some reasons , i must use this low hibernate edition.
Mapping documents:
hibernate.cfg.xml:
<?xml version='1.0' encoding='UTF-8'?>
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD//EN"
"http://hibernate.sourceforge.net/hibernate-configuration-2.0.dtd">
<hibernate-configuration>
<session-factory>
<property name="hibernate.connection.username">root</property>
<property name="hibernate.connection.url">jdbc:mysql://localhost:3306/test</property>
<property name="dialect">net.sf.hibernate.dialect.MySQLDialect</property>
<property name="hibernate.connection.password">******</property>
<property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>

<property name="show_sql">True</property>
<property name="hibernate.use_outer_join">True</property>
<property name="hibernate.transaction.factory_class">
net.sf.hibernate.transaction.JDBCTransactionFactory
</property>
<mapping resource="book.hbm.xml"/>
</session-factory>
</hibernate-configuration>

book.hbm.xml:
<?xml version='1.0' encoding='UTF-8'?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 1.1//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-2.0.dtd">
<hibernate-mapping>
<class name="org.test.book.services.db.Book" table="book_book">
<id name="id" type="integer">
<column name="id" />
<generator class="native" />
</id>
<property name="name" type="string">
<column name="name" length="100" />
</property>
<property name="author" type="string">
<column name="author" length="100" />
</property>
</class>
</hibernate-mapping>

Code between sessionFactory.openSession() and session.close():
Session session=new Configuration().configure().buildSessionFactory().openSession(); //the point error occurs!!!!!!!!!!!!!
Book addedbook=new Book();
tx=session.beginTransaction();
session.save(addedbook);
tx.commit();
Full stack trace of any exception that occurs:
java.lang.ExceptionInInitializerError
at net.sf.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:805)
at org.test.book.services.db.BookUtil.add(BookUtil.java:32)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:709) at

javax.servlet.http.HttpServlet.service(HttpServlet.java:802) at

org.apache.catalina.core.ApplicationFilterChain.internalDoFilter

(ApplicationFilterChain.java:252) at

org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)

at org.gridlab.gridsphere.filters.GridSphereFilter.doFilter(GridSphereFilter.java:77) at

org.apache.catalina.core.ApplicationFilterChain.internalDoFilter

(ApplicationFilterChain.java:202) at

org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)

at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213) at

org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178) at

org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126) at

org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105) at

org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107) at

org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148) at

org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:856) at

org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection

(Http11Protocol.java:744) at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket

(PoolTcpEndpoint.java:527) at

org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt

(LeaderFollowerWorkerThread.java:80) at

org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684) at

java.lang.Thread.run(Unknown Source) Caused by: java.lang.ClassCastException:

net.sf.hibernate.impl.SessionFactoryImpl$QueryCacheKeyFactory$$KeyFactoryByCGLIB$$601120e

d
at net.sf.cglib.core.KeyFactory$Generator.create(KeyFactory.java:145)
at net.sf.cglib.core.KeyFactory.create(KeyFactory.java:117)
at net.sf.cglib.core.KeyFactory.create(KeyFactory.java:108)
at net.sf.cglib.core.KeyFactory.create(KeyFactory.java:104)
at net.sf.hibernate.impl.SessionFactoryImpl.(SessionFactoryImpl.java:237)
... 44 more
Name and version of the database you are using:
Mysql 5.0.18


-_-! Waiting for your help ..........

i guess maybe sth wrong with my cfg.xml ? anyone can help me?

That 's an emergency , sorry for my mutil posting .............