java.lang.NoClassDefFoundError：无法初始化类

Question

我写这个课时遇到这个错误：

public class FtHelper2 {
    Session session=null;



    public FtHelper2(){

        System.out.println("aASDASDSAD");
        this.session = HibernateUtil.getSessionFactory().getCurrentSession();
    }

    public String abc(){

        return "abc";
    }

}

如果我删除会话，它可以工作。 Session在这里有什么问题？

的HibernateUtil

public class HibernateUtil {
    private static final SessionFactory sessionFactory;

    static {
        try {
            // Create the SessionFactory from standard (hibernate.cfg.xml) 
            // config file.
            sessionFactory = new AnnotationConfiguration().configure().buildSessionFactory();
        } catch (Throwable ex) {
            // Log the exception. 
            System.err.println("Initial SessionFactory creation failed." + ex);
            throw new ExceptionInInitializerError(ex);
        }
    }

    public static SessionFactory getSessionFactory() {
        return sessionFactory;
    }
}

这些是我的映射：

<hibernate-mapping>
    <class name="TekirMobile.FinancialTransactions" table="FinancialTransactions" catalog="TekirMobile">
        <id name="id" type="int">
            <column name="ID" />
            <generator class="assigned" />
        </id>
        <property name="date" type="string">
            <column name="DATE" length="45" />
        </property>
        <property name="contact" type="string">
            <column name="CONTACT" length="45" />
        </property>
        <property name="amount" type="string">
            <column name="AMOUNT" length="45" />
        </property>
        <property name="document" type="string">
            <column name="DOCUMENT" length="45" />
        </property>
    </class>
</hibernate-mapping>


<hibernate-mapping>
    <class name="TekirMobile.Customer" table="Customer" catalog="TekirMobile">
        <id name="id" type="int">
            <column name="ID" />
            <generator class="assigned" />
        </id>
        <property name="name" type="string">
            <column name="NAME" length="45" />
        </property>
        <property name="company" type="string">
            <column name="COMPANY" length="45" />
        </property>
        <property name="type" type="string">
            <column name="TYPE" length="45" />
        </property>
    </class>
</hibernate-mapping>

可能是什么问题？出了什么问题？ cfg文件在不同的包中。它们是默认包。

完整的堆栈跟踪如下：

Ĵ

avax.faces.el.EvaluationException: java.lang.NoClassDefFoundError: Could not initialize class TekirMobile.HibernateUtil
    at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:102)
    at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:101)
    at javax.faces.component.UICommand.broadcast(UICommand.java:315)
    at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:794)
    at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1259)
    at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:81)
    at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
    at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
    at javax.faces.webapp.FacesServlet.service(FacesServlet.java:593)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
    at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:936)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
    at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1004)
    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
    at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1146)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
    at java.lang.Thread.run(Thread.java:679)
Caused by: java.lang.NoClassDefFoundError: Could not initialize class TekirMobile.HibernateUtil
    at TekirMobile.FtHelper2.<init>(FtHelper2.java:18)
    at TekirMobile.FtManagedBean.abc(FtManagedBean.java:66)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:616)
    at org.apache.el.parser.AstValue.invoke(AstValue.java:278)
    at org.apache.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:274)
    at com.sun.faces.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:105)
    at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:88)
    ... 24 more