noClassDefFounderRorr：org/hibernate/cfg/annotationconfiguration

Question

我创建了一个web动态项目，并希望使用hibernate。

然后，我使用Hibernate代码生成生成类代码，并创建了一个类HibernateUtil，在其中初始化SessionFactory。

public class HibernateUtil {
    private static final SessionFactory sessionFactory = buildSessionFactory();
    
    private static SessionFactory buildSessionFactory(){
        try{
            SessionFactory sessionFactory = 
                    new AnnotationConfiguration().configure().buildSessionFactory();
            return sessionFactory;
        }catch(Exception ex){
            ex.printStackTrace();
            throw new ExceptionInInitializerError(ex);
        }
    }
    
    public static SessionFactory getSessionFactory() {
        return sessionFactory;
    }
    
    public static void shutdown() {
        getSessionFactory().close();
    }
}

和另一个类HibernateSessionFactoryListener:

public class HibernateSessionFactoryListener implements ServletContextListener{

    @Override
    public void contextInitialized(ServletContextEvent arg0) {
        Session session = HibernateUtil.getSessionFactory().openSession();
        System.out.println("\n Context Initilaise \n");
    }

    @Override
    public void contextDestroyed(ServletContextEvent arg0) {
        HibernateUtil.shutdown();
        System.out.println("\n Context Detruit \n");
    }

}

java.lang.NoClassDefFoundError: org/hibernate/cfg/AnnotationConfiguration
    at com.hibernate.HibernateUtil.buildSessionFactory(HibernateUtil.java:28)
    at com.hibernate.HibernateUtil.<clinit>(HibernateUtil.java:11)
    at com.hibernate.HibernateSessionFactoryListener.contextInitialized(HibernateSessionFactoryListener.java:12)
    at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4973)
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5467)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549)
    at java.util.concurrent.FutureTask.run(FutureTask.java:262)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
    at java.lang.Thread.run(Thread.java:744)
Caused by: java.lang.ClassNotFoundException: org.hibernate.cfg.AnnotationConfiguration
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1718)
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1569)
    ... 12 more

这是我的Java构建路径：

Answer 1

在Hibernate3.6中，“org.Hibernate.cfg.annotationconfiguration”是不推荐的，它的所有功能都移到了“org.Hibernate.cfg.configuration”。因此，您可以安全地用“Configuration”类替换“AnnotationConfiguration”

来源：http://www.mkyong.com/hibernate/hibernate-the-type-annotationconfiguration-is-deprecated/