Блог

Привет, друзья, я получаю это исключение в моем envt. и это не исправить, когда это вызовет. Я использую Spring 3, JPA и Hibernate, и мы используем EntityManager, предоставляемый сервером, и транзакция также предоставляется сервером. Но метод, который выдает это исключение, не помечен @Transaction, и транзакция не используется. Смотрите исключение ниже

 java.lang.NullPointerException
2011-04-27 13:10:56,141 ERROR [STDERR]  at org.hibernate.cache.impl.bridge.RegionFactoryCacheProviderBridge.nextTimestamp(RegionFactoryCacheProviderBridge.java:85)
2011-04-27 13:10:56,141 ERROR [STDERR]  at org.hibernate.impl.SessionFactoryImpl.openSession(SessionFactoryImpl.java:573)
2011-04-27 13:10:56,141 ERROR [STDERR]  at org.hibernate.ejb.EntityManagerImpl.getRawSession(EntityManagerImpl.java:87)
2011-04-27 13:10:56,141 ERROR [STDERR]  at org.hibernate.ejb.EntityManagerImpl.getSession(EntityManagerImpl.java:67)
2011-04-27 13:10:56,141 ERROR [STDERR]  at org.hibernate.ejb.AbstractEntityManagerImpl.joinTransaction(AbstractEntityManagerImpl.java:436)
2011-04-27 13:10:56,151 ERROR [STDERR]  at org.hibernate.ejb.AbstractEntityManagerImpl.postInit(AbstractEntityManagerImpl.java:82)
2011-04-27 13:10:56,151 ERROR [STDERR]  at org.hibernate.ejb.EntityManagerImpl.<init>(EntityManagerImpl.java:61)
2011-04-27 13:10:56,151 ERROR [STDERR]  at org.hibernate.ejb.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:39)
2011-04-27 13:10:56,151 ERROR [STDERR]  at org.hibernate.ejb.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:34)
2011-04-27 13:10:56,151 ERROR [STDERR]  at org.jboss.jpa.injection.InjectedEntityManagerFactory.createEntityManager(InjectedEntityManagerFactory.java:82)
2011-04-27 13:10:56,177 ERROR [STDERR]  at org.springframework.orm.jpa.SharedEntityManagerCreator$SharedEntityManagerInvocationHandler.invoke(SharedEntityManagerCreator.java:234)
  

 <?xml version="1.0" encoding="UTF-8"?>
<!-- Persistence deployment descriptor for dev profile -->
<persistence xmlns="http://java.sun.com/xml/ns/persistence"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd"
    version="1.0">


     <persistence-unit name="myPU" transaction-type="JTA">
        <provider>org.hibernate.ejb.HibernatePersistence</provider> 
        <jta-data-source>java:/myDatasource</jta-data-source> 
        <!--Here I have my list of entity beans -->
         <properties> 
            <property name="hibernate.dialect" value="org.hibernate.dialect.Oracle10gDialect" />
            <property name="hibernate.connection.driver_class" value="oracle.jdbc.driver.OracleDriver" />
              <property name="jboss.entity.manager.factory.jndi.name" value="persistence-units/myPU"/>

        </properties>
     </persistence-unit>  


</persistence>
  

Конфигурация Spring

 <context:annotation-config /> 
<context:component-scan base-package="my.package.name" />
<tx:annotation-driven transaction-manager="txManager"/>  
<jee:jndi-lookup id="entityManagerFactory" jndi-name="persistence-units/myPU"/>

<bean
    class="org.springframework.beans.factory.annotation.RequiredAnnotationBeanPostProcessor" />
<bean
    class="org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor" />
 <bean id="txManager" class="org.springframework.transaction.jta.JtaTransactionManager">
      <property name="transactionManagerName" value="java:/TransactionManager"/>
    <property name="userTransactionName" value="UserTransaction"/>
</bean>