java lang NoClassDefFoundError

[Kevin Lee]

hi,guys
I downloaded the sourcecode from
http://struts.apache.org/2.x/docs/struts-2-spring-2-jpa-ajax.html
,it's a small project integrates spring2 + struts2 + JPA,
I added those jars needed to the folder /WEB-INF/lib, and deployed to the tomcat5.5.when I started the tomcat,getting follow errors:

2008-07-22 08:45:39,296 INFO  [main] support.DefaultListableBeanFactory (DefaultSingletonBeanRegistry.java:271)     -Destroying singletons in {org.springframework.beans.factory.support.DefaultListableBeanFactory defining beans [org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor,personService,entityManagerFactory,dataSource,transactionManager,org.springframework.aop.config.internalAutoProxyCreator,org.springframework.transaction.interceptor.TransactionAttributeSourceAdvisor,personAction]; root of BeanFactory hierarchy}
2008-07-22 08:45:39,312 ERROR [main] context.ContextLoader (ContextLoader.java:205)     -Context initialization failed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in ServletContext resource [/WEB-INF/applicationContext.xml]: Cannot create inner bean 'org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter#1cf16ac' while setting bean property 'jpaVendorAdapter'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter#1cf16ac' defined in ServletContext resource [/WEB-INF/applicationContext.xml]: Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter]: Constructor threw exception; nested exception is java.lang.NoClassDefFoundError: org/hibernate/ejb/HibernatePersistence
Caused by: 
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter#1cf16ac' defined in ServletContext resource [/WEB-INF/applicationContext.xml]: Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter]: Constructor threw exception; nested exception is java.lang.NoClassDefFoundError: org/hibernate/ejb/HibernatePersistence
Caused by: 
org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter]: Constructor threw exception; nested exception is java.lang.NoClassDefFoundError: org/hibernate/ejb/HibernatePersistence
Caused by: 
java.lang.NoClassDefFoundError: org/hibernate/ejb/HibernatePersistence

It seems that it can't find the class rg.hibernate.ejb.HibernatePersistence,I want to know how to fix it.
thanks a lot

[Adeel Ansari]

It seems, none of your jar files contain this class. Just make sure, you have it.

Cheers.

[Alaa Nassef]

The problem is that you don't have org.hibernate.ejb.HibernatePersistenc in your jars. This is included in the hibernate entity manager, that you may have not included in libs. I also believe that you might need the hibernate annotations project as well

[Kevin Lee]

Originally posted by Alaa Nassef:
The problem is that you don't have org.hibernate.ejb.HibernatePersistenc in your jars. This is included in the hibernate entity manager, that you may have not included in libs. I also believe that you might need the hibernate annotations project as well

thank you。you are good.