JTA EntityManager不能使用getTransaction()[Spring + Hibernate + EntityManager] [英] JTA EntityManager cannot use getTransaction() [Spring + Hibernate + EntityManager]
问题描述
我使用Spring + JPA + Hibernate + EntityManager与数据库交谈。我得到'JTA EntityManager不能使用getTransaction()'错误。请提供您的见解并帮助我解决问题。
I am using Spring + JPA + Hibernate + EntityManager to talk to the database. I am getting 'A JTA EntityManager cannot use getTransaction()' error. Please provide your insights and help me resolve the issue.
beans.xml
beans.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans default-autowire="byName"
... xmlns definitions...
xsi:schemaLocation="...">
<context:component-scan base-package="com.mycompany.myproject" />
<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean" />
<bean class="org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor" />
<bean id="myDAO" class="com.mycompany.myproject.dao.myDAO" />
<bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
<property name="entityManagerFactory" ref="entityManagerFactory" />
</bean>
<tx:annotation-driven />
</beans>
persistence.xml
<?xml version="1.0" encoding="UTF-8"?>
<persistence ... xmlns definitions xsi:schemaLocation="..." version="1.0">
<persistence-unit name="TEST_DS">
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<jta-data-source>java:/TEST_DS</jta-data-source>
<class>com.twinspires.exchange.model.Test</class>
<properties>
<property name="hibernate.archive.autodetection" value="class, hbm" />
<property name="hibernate.dialect" value="org.hibernate.dialect.MySQLDialect" />
<property name="hibernate.hbm2ddl.auto" value="validate" /> <!-- create-drop update -->
<property name="hibernate.cache.use_query_cache" value="true" />
<property name="hibernate.show_sql" value="true" />
<property name="hibernate.cache.provider_class" value="org.hibernate.cache.HashtableCacheProvider" />
<property name="hibernate.transaction.manager_lookup_class" value="org.hibernate.transaction.JBossTransactionManagerLookup"/>
</properties>
</persistence-unit>
</persistence>
异常堆栈追踪(摘录)
$ b
Exception Stack Trace (Excerpt)
15:47:43,340 INFO [STDOUT] DEBUG: org.springframework.transaction.annotation.AnnotationTransactionAttributeSource - Adding transactional method 'getName' with attribute: PROPAGATION_REQUIRED,ISOLATION_DEFAULT; ''
15:47:43,343 INFO [STDOUT] DEBUG: org.springframework.beans.factory.support.DefaultListableBeanFactory - Returning cached instance of singleton bean 'transactionManager'
15:47:43,356 INFO [STDOUT] DEBUG: org.springframework.orm.jpa.JpaTransactionManager - Creating new transaction with name [com.twinspires.exchange.dao.PicDAO.getName]: PROPAGATION_REQUIRED,ISOLATION_DEFAULT; ''
15:47:44,114 INFO [STDOUT] DEBUG: org.springframework.orm.jpa.JpaTransactionManager - Opened new EntityManager [org.hibernate.ejb.EntityManagerImpl@c629e5] for JPA transaction
15:47:44,124 INFO [STDOUT] DEBUG: org.springframework.orm.jpa.JpaTransactionManager - Could not rollback EntityManager after failed transaction begin
15:47:44,125 INFO [STDOUT] java.lang.IllegalStateException: A JTA EntityManager cannot use getTransaction()
15:47:44,125 INFO [STDOUT] at org.hibernate.ejb.AbstractEntityManagerImpl.getTransaction(AbstractEntityManagerImpl.java:818)
15:47:44,126 INFO [STDOUT] at org.springframework.orm.jpa.JpaTransactionManager.closeEntityManagerAfterFailedBegin(JpaTransactionManager.java:412)
15:47:44,127 INFO [STDOUT] at org.springframework.orm.jpa.JpaTransactionManager.doBegin(JpaTransactionManager.java:381)
15:47:44,128 INFO [STDOUT] at org.springframework.transaction.support.AbstractPlatformTransactionManager.getTransaction(AbstractPlatformTransactionManager.java:371)
15:47:44,129 INFO [STDOUT] at org.springframework.transaction.interceptor.TransactionAspectSupport.createTransactionIfNecessary(TransactionAspectSupport.java:335)
15:47:44,129 INFO [STDOUT] at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:105)
15:47:44,130 INFO [STDOUT] at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
15:47:44,131 INFO [STDOUT] at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)
15:47:44,131 INFO [STDOUT] at $Proxy175.getName(Unknown Source)
Folowing是我的dao类: -
Folowing is my dao class:-
public class MyDao implements IMyDao {
@PersistenceContext(unitName = "TEST_DS")
private EntityManager entityManager;
@Transactional
public String getName() {
final Query query = entityManager.createQuery("from TestTable");
final Object obj = query.getResultList().get(0);
return obj == null ? "Empty" : (String) obj;
}
}
您的帮助非常感谢。
推荐答案
从persitence.xml中删除jta-datasource,将数据源配置为bean j2ee:jdni-lookup并将其注入到LocalContainerEntityManagerFactoryBean中
Remove the jta-datasource from persitence.xml, configure datasource as a bean j2ee:jdni-lookup and inject it into the LocalContainerEntityManagerFactoryBean
从persistence.xml中删除它
Remove this from persistence.xml
<jta-data-source>java:/TEST_DS</jta-data-source>
将交易类型配置为本地资源
Configure the transaction-type to resource local
<persistence-unit name="TEST_DS" transaction-type="RESOURCE_LOCAL">
更改为您的beans.xml
Change to your beans.xml
<j2ee:jndi-lookup id="dataSource" jndi-name="java:/TEST_DS"/>
<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="dataSource" ref="dataSource"/>
</bean>
这篇关于JTA EntityManager不能使用getTransaction()[Spring + Hibernate + EntityManager]的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!