一些背景信息:我正在尝试将一个大项目从 Hibernate 3.6.8 迁移到 5.2.5(包括 JPA 升级 2.0 到 2.1),Spring 3.2.3 到 4.3.5,并且面临严重的问题。到目前为止,Spring 和 Hibernate 的配置没有改变,并且在旧版本上运行良好,但是随着升级问题出现了我自己无法解决的问题。
我得到的例外是:
2017-01-16 10:15:25,635 ERROR [[ACTIVE] ExecuteThread: '15' for queue: 'weblogic.kernel.Default (self-tuning)'] org.myproject.common.messaging.BaseMDB: Code: (11702) Source: (Common) Exception caught - Exception org.springframework.dao.InvalidDataAccessApiUsageException in org.myproject.core.processing.message.MessageReceiverImpl caught
org.springframework.dao.InvalidDataAccessApiUsageException: No EntityManager with actual transaction available for current thread - cannot reliably process 'flush' call; nested exception is javax.persistence.TransactionRequiredException: No EntityManager with actual transaction available for current thread - cannot reliably process 'flush' call
at org.springframework.orm.jpa.EntityManagerFactoryUtils.convertJpaAccessExceptionIfPossible(EntityManagerFactoryUtils.java:413)
at org.springframework.orm.jpa.vendor.HibernateJpaDialect.translateExceptionIfPossible(HibernateJpaDialect.java:246)
at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.translateExceptionIfPossible(AbstractEntityManagerFactoryBean.java:491)
at org.springframework.dao.support.ChainedPersistenceExceptionTranslator.translateExceptionIfPossible(ChainedPersistenceExceptionTranslator.java:59)
at org.springframework.dao.support.DataAccessUtils.translateIfNecessary(DataAccessUtils.java:213)
at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:147)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:213)
at com.sun.proxy.$Proxy187.flushAndClear(Unknown Source)
at org.myproject.core.BasePersistenceMDB.synchronizeBackend(BasePersistenceMDB.java:46)
at org.myproject.core.BasePersistenceMDB.onTextMessage(BasePersistenceMDB.java:32)
at org.myproject.common.messaging.BaseMDB.evaluateJMSMessage(BaseMDB.java:100)
at org.myproject.common.messaging.BaseMDB.onMessage(BaseMDB.java:51)
at sun.reflect.GeneratedMethodAccessor591.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at com.bea.core.repackaged.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:310)
at com.bea.core.repackaged.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:182)
at com.bea.core.repackaged.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:149)
at com.oracle.pitchfork.intercept.MethodInvocationInvocationContext.proceed(MethodInvocationInvocationContext.java:100)
at com.oracle.pitchfork.intercept.JeeInterceptorInterceptor.invoke(JeeInterceptorInterceptor.java:117)
at com.bea.core.repackaged.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
at com.bea.core.repackaged.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:131)
at com.bea.core.repackaged.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:119)
at com.bea.core.repackaged.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
at com.bea.core.repackaged.springframework.aop.framework.JdkDynamicAopProxy.invoke(Unknown Source)
at com.sun.proxy.$Proxy121.onMessage(Unknown Source)
at weblogic.ejb.container.internal.MDListener.execute(MDListener.java:451)
at weblogic.ejb.container.internal.MDListener.transactionalOnMessage(MDListener.java:375)
at weblogic.ejb.container.internal.TokenBasedJMSMessagePoller.processOneMessage(TokenBasedJMSMessagePoller.java:279)
at weblogic.ejb.container.internal.TokenBasedJMSMessagePoller.run(TokenBasedJMSMessagePoller.java:121)
at weblogic.work.SelfTuningWorkManagerImpl$WorkAdapterImpl.run(SelfTuningWorkManagerImpl.java:548)
at weblogic.work.ExecuteThread.execute(ExecuteThread.java:311)
at weblogic.work.ExecuteThread.run(ExecuteThread.java:263)
Caused by: javax.persistence.TransactionRequiredException: No EntityManager with actual transaction available for current thread - cannot reliably process 'flush' call
at org.springframework.orm.jpa.SharedEntityManagerCreator$SharedEntityManagerInvocationHandler.invoke(SharedEntityManagerCreator.java:282)
at com.sun.proxy.$Proxy163.flush(Unknown Source)
at org.myproject.core.data.dao.impl.MyPersistenceContextImpl.flushAndClear(MyPersistenceContextImpl.java:49)
at sun.reflect.GeneratedMethodAccessor616.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:333)
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:190)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:136)
... 28 more
我的配置如下:
pom.xml(相关片段):
对于春季:
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>4.3.5.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
<version>4.3.5.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>4.3.5.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>4.3.5.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-orm</artifactId>
<version>4.3.5.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>4.3.5.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>4.3.5.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>4.3.5.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>4.3.5.RELEASE</version>
<scope>test</scope>
</dependency>
对于休眠:
<dependency>
<groupId>org.hibernate.common</groupId>
<artifactId>hibernate-commons-annotations</artifactId>
<version>5.0.1.Final</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<version>5.2.6.Final</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-entitymanager</artifactId>
<version>5.2.6.Final</version>
</dependency>
<dependency>
<groupId>org.hibernate.javax.persistence</groupId>
<artifactId>hibernate-jpa-2.1-api</artifactId>
<version>1.0.0.Final</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-jpamodelgen</artifactId>
<version>5.2.6.Final</version>
<scope>provided</scope>
</dependency>
persistence.xml(完整):(这里有些事情已经改变,但没有帮助:jta-data-source已添加,xsd版本已更新)
<persistence xmlns="http://xmlns.jcp.org/xml/ns/persistence"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/persistence http://xmlns.jcp.org/xml/ns/persistence/persistence_2_1.xsd"
version="2.1">
<persistence-unit name="MYPROJECT_PU" transaction-type="JTA">
<provider>org.hibernate.jpa.HibernatePersistenceProvider</provider>
<jta-data-source>myproject-ds_jndi</jta-data-source>
<mapping-file>META-INF/named-queries.xml</mapping-file>
<class>org.myproj.core.domain.Message</class>
</persistence-unit>
</persistence>
appContext.xml(相关片段):(自升级以来,仅在 jpaProperties 中添加了一项额外属性)
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"
xmlns:tx="http://www.springframework.org/schema/tx" xmlns:jdbc="http://www.springframework.org/schema/jdbc"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx.xsd
http://www.springframework.org/schema/jdbc
http://www.springframework.org/schema/jdbc/spring-jdbc.xsd">
...
<bean
class="org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor" />
<bean
class="org.springframework.dao.annotation.PersistenceExceptionTranslationPostProcessor" />
<bean
class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="locations">
<list>
<value>classpath:configuration.properties</value>
<value>classpath:externalized-queries.properties</value>
</list>
</property>
</bean>
<bean id="jndiDataSource" class="org.springframework.jndi.JndiObjectFactoryBean">
<property name="jndiName" value="${datasourceJndiName}"></property>
</bean>
<!-- Indicates a JpaVendorAdapter implementation for Hibernate EntityManager. -->
<bean id="jpaVendorAdapter"
class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
<property name="database" value="${databaseVendor}" />
<property name="showSql" value="${showSql}" />
<property name="generateDdl" value="${generateDdl}" />
<property name="databasePlatform" value="${databaseDialect}" />
</bean>
<bean id="entityManagerFactory"
class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="persistenceXmlLocation" value="${persistenceXmlFileLocation}" />
<property name="persistenceUnitName" value="${persistenceUnitName}" />
<property name="dataSource" ref="jndiDataSource" />
<property name="jpaVendorAdapter" ref="jpaVendorAdapter" />
<property name="jpaProperties">
<props>
<prop key="hibernate.transaction.manager_lookup_class">${transactionManagerLookupClass}</prop>
<prop key="hibernate.transaction.jta.platform">org.hibernate.service.jta.platform.internal.WeblogicJtaPlatform</prop> <!-- this was newly added -->
</props>
</property>
</bean>
<tx:annotation-driven />
<tx:jta-transaction-manager />
...
打开事务的类的相关片段演示了此处使用了哪些注释:
import java.sql.SQLException;
import java.util.Set;
import javax.interceptor.Interceptors;
import org.springframework.ejb.interceptor.SpringBeanAutowiringInterceptor;
import org.springframework.transaction.annotation.Propagation;
import org.springframework.transaction.annotation.Transactional;
...
@Interceptors(SpringBeanAutowiringInterceptor.class)
@Transactional(propagation = Propagation.REQUIRED)
public class DBLockingImpl implements Locking {
@Autowired
private DataSource dataSource;
这是调用entityManager的类(此时事务已经打开,但是在EntityManager上调用flush方法时发生异常):
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Repository;
@Repository(value = "persistenceContext")
public class PersistenceContextImpl
implements PersistenceContext {
/**
* Instance variable for EntityManager.
*/
@PersistenceContext
private EntityManager entityManager;
@Override
public void flushAndClear() {
entityManager.flush();
entityManager.clear();
}
}
那么有人可以帮我解决这个问题吗?我不明白缺少什么以及为什么我会遇到异常。我的印象是 Spring 没有正确连接到 Hibernates 实体管理器,这就是异常出现的原因,因为 trasanction 本身似乎是创建的,但每当它尝试持久化时,这个异常就会发生。毕竟,我觉得很奇怪,它不再工作了,尽管它在这些框架的旧版本上工作得很好。与旧版本相比,配置有什么大的变化吗?