I migrate from HIbernate 2.1.6 to Hibernate 3, but when I compile and deploy my webapplication, this is the error log:

[InformaticaTorVergata] ERROR [http-8080-Processor23] ContextLoader.initWebApplicationContext(177) | Context initializationfailed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory' defined in ServletContext resource [/WEB-INF/applicationContext-hibernate.xml]: Initialization of bean failed; nested exception is java.lang.NoClassDefFoundError: null
java.lang.NoClassDefFoundError
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1005)
at org.springframework.orm.hibernate3.LocalSessionFactoryBean.newSessionFactory(LocalSessionFactoryBean.java:777)
at org.springframework.orm.hibernate3.LocalSessionFactoryBean.afterPropertiesSet(LocalSessionFactoryBean.java:703)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1058)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:363)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:226)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:147)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:269)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:318)
at org.springframework.web.context.support.AbstractRefreshableWebApplicationContext.refresh(AbstractRefreshableWebApplicationContext.java:134)
at org.springframework.web.context.ContextLoader.createWebApplicationContext(ContextLoader.java:230)
at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:156)
at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:48)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3827)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4343)
at org.apache.catalina.core.StandardHostDeployer.start(StandardHostDeployer.java:830)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:991)
at org.apache.catalina.manager.ManagerServlet.start(ManagerServlet.java:1322)
at org.apache.catalina.manager.HTMLManagerServlet.start(HTMLManagerServlet.java:530)
at org.apache.catalina.manager.HTMLManagerServlet.doGet(HTMLManagerServlet.java:104)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:214)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:198)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:152)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:540)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:137)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:118)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:929)
at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:799)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:705)
at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:577)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:683)
at java.lang.Thread.run(Thread.java:534)


I check my source codes and my applicationContext-hibernate.xml twice with migration guide, but the result is same.


<b>My ApplicationContext-Hibernate.xml is this:</b>
<bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">

<property name="dataSource">
<ref bean="dataSource"/>
</property>

<property name="mappingResources">
<list>
<value>org/infotv/model/bo/BoardBO.hbm.xml</value>
<value>org/infotv/model/bo/CommitmentBO.hbm.xml</value>
<value>org/infotv/model/bo/CompanyBO.hbm.xml</value>
<value>org/infotv/model/bo/DocumentBO.hbm.xml</value>
<value>org/infotv/model/bo/ExamBO.hbm.xml</value>
<value>org/infotv/model/bo/InfoServiceBO.hbm.xml</value>
<value>org/infotv/model/bo/LessonBO.hbm.xml</value>
<value>org/infotv/model/bo/LinkBO.hbm.xml</value>
<value>org/infotv/model/bo/MessageBO.hbm.xml</value>
<value>org/infotv/model/bo/StageBO.hbm.xml</value>
<value>org/infotv/model/bo/TextbookBO.hbm.xml</value>
<value>org/infotv/model/bo/UserBO.hbm.xml</value>
<value>org/infotv/model/bo/WeeklyEventBO.hbm.xml</value>
<value>org/infotv/model/bo/BookingBO.hbm.xml</value>
</list>
</property>

<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
<prop key="hibernate.show_sql">false</prop>
<prop key="hibernate.c3p0.minPoolSize">5</prop>
<prop key="hibernate.c3p0.maxPoolSize">20</prop>
<prop key="hibernate.timeout">1800</prop>
<prop key="hibernate.max_statement">50</prop>
<prop key="hibernate.cache.use_query_cache">true</prop>
<prop key="hibernate.connection.release_mode">on_close</prop>
<prop key="hibernate.connection.readOnly">false</prop>
<prop key="hibernate.cglib.use_reflection_optimizer">true</prop>
</props>
</property>
</bean>

My DatabaseServer is MySQL 4.1
Thanks

did you make sure to upgrade spring to version 1.2.4.

the package
org.springframework.orm.hibernate3.* does not exist in older versions of spring.

I'm using Spring 1.2.4, Hibernate 3.0.5, Struts 1.2.4.

your hibernate.xml file appears to be fine, I can't tell much more information from that error log.

I'd have to recommend making sure your classpath is cleaned up, and you have no duplicate jar files conflicting with the build, make sure to keep all the jar files that came with the new version of hibernate3.

I don't know anything about struts.

Thanks I resolve to change in bena DataSource jdbc connector:
before I have used org.springframework.jdbc.datasource.DriverManagerDataSource,
now i'm using org.apache.commons.dbcp.BasicDataSource.

Thanks for your helps