Spring 和 JTA 错误
Spring and JTA error
我正在尝试使用 Atomikos 将 Spring JPA/Hibernate 项目与 JTA 集成。
我正在开发一个小示例，您可以找到它 in this repository
您可以在那里看到所有内容（persistence.xml、applicationContext.xml 等）。但我将在这里展示该文件的片段：
persistence.xml:
<persistence-unit name="presistence-unit" transaction-type="JTA"> <!-- transaction-type="RESOURCE_LOCAL"> -->
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<jta-data-source>jdbc/ct</jta-data-source>
<class>org.sergio.jtaSpringProject.entities.Transfer</class>
<class>org.sergio.jtaSpringProject.entities.Client</class>
<properties>
<property name="hibernate.hbm2ddl.auto" value="update" />
<property name="hibernate.show_sql" value="false" />
<property name="hibernate.dialect" value="org.hibernate.dialect.MySQL5InnoDBDialect" />
<property name="hibernate.connection.autocommit" value="false" />
<property name="hibernate.transaction.factory_class" value="org.hibernate.engine.transaction.internal.jta.CMTTransactionFactory" />
<!-- <property name="hibernate.transaction.factory_class" value="com.atomikos.icatch.jta.hibernate3.AtomikosJTATransactionFactory" /> -->
<property name="hibernate.transaction.manager_lookup_class" value="com.atomikos.icatch.jta.hibernate3.TransactionManagerLookup" />
</properties>
</persistence-unit>
applicationContext.xml:
<!-- Create proxy instances of Repository interfaces -->
<jpa:repositories base-package="org.sergio.jtaSpringProject.repositories"/>
<tx:annotation-driven transaction-manager="transactionManager"/>
<bean id="dataSource" class="com.atomikos.jdbc.AtomikosDataSourceBean"
init-method="init" destroy-method="close">
<property name="uniqueResourceName">
<value>XADBMS</value>
</property>
<property name="xaDataSourceClassName">
<value>com.mysql.jdbc.jdbc2.optional.MysqlXADataSource</value>
</property>
<property name="xaProperties">
<props>
<prop key="URL">jdbc:mysql://localhost:3306/ct</prop>
<prop key="user">root</prop>
<prop key="password">root</prop>
</props>
</property>
<property name="maxPoolSize" value="3" />
<property name="minPoolSize" value="1" />
</bean>
<bean id="entityManagerFactory"
class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="jpaVendorAdapter">
<bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
<property name="showSql" value="true" />
<property name="generateDdl" value="true" />
<property name="database" value="MYSQL" />
</bean>
</property>
<property name="persistenceXmlLocation">
<value>persistence.xml</value>
</property>
<property name="persistenceUnitName" value="presistence-unit" />
</bean>
<bean id="atomikosTransactionManager" class="com.atomikos.icatch.jta.UserTransactionManager"
init-method="init" destroy-method="close">
<property name="forceShutdown" value="false" />
</bean>
<bean id="atomikosUserTransaction" class="com.atomikos.icatch.jta.UserTransactionImp">
<property name="transactionTimeout" value="300" />
</bean>
<bean id="transactionManager"
class="org.springframework.transaction.jta.JtaTransactionManager"
depends-on="atomikosTransactionManager,atomikosUserTransaction">
<property name="transactionManager" ref="atomikosTransactionManager" />
<property name="userTransaction" ref="atomikosUserTransaction" />
<property name="allowCustomIsolationLevels" value="true" />
</bean>
当我 运行 这个项目时，我得到下一个错误：
Exception in thread "main" org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'clientRepository': Invocation of init method failed; nested exception is java.lang.NullPointerException
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1578)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:545)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482)
at org.springframework.beans.factory.support.AbstractBeanFactory.getObject(AbstractBeanFactory.java:305)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:301)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:196)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:753)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:834)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:537)
at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:139)
at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:83)
at org.sergio.jtaSpringProject.App.main(App.java:30)
Caused by: java.lang.NullPointerException
at org.hibernate.engine.transaction.internal.jta.JtaStatusHelper.getStatus(JtaStatusHelper.java:76)
at org.hibernate.engine.transaction.internal.jta.JtaStatusHelper.isActive(JtaStatusHelper.java:118)
at org.hibernate.engine.transaction.internal.jta.CMTTransaction.join(CMTTransaction.java:149)
at org.hibernate.jpa.spi.AbstractEntityManagerImpl.joinTransaction(AbstractEntityManagerImpl.java:1602)
at org.hibernate.jpa.spi.AbstractEntityManagerImpl.postInit(AbstractEntityManagerImpl.java:210)
at org.hibernate.jpa.internal.EntityManagerImpl.<init>(EntityManagerImpl.java:91)
at org.hibernate.jpa.internal.EntityManagerFactoryImpl.internalCreateEntityManager(EntityManagerFactoryImpl.java:345)
at org.hibernate.jpa.internal.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:313)
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:606)
at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.invokeProxyMethod(AbstractEntityManagerFactoryBean.java:388)
at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean$ManagedEntityManagerFactoryInvocationHandler.invoke(AbstractEntityManagerFactoryBean.java:541)
at com.sun.proxy.$Proxy17.createEntityManager(Unknown Source)
at org.springframework.orm.jpa.SharedEntityManagerCreator$SharedEntityManagerInvocationHandler.invoke(SharedEntityManagerCreator.java:287)
at com.sun.proxy.$Proxy25.getDelegate(Unknown Source)
at org.springframework.data.jpa.provider.JpaClassUtils.isEntityManagerOfType(JpaClassUtils.java:46)
at org.springframework.data.jpa.provider.PersistenceProvider.fromEntityManager(PersistenceProvider.java:296)
at org.springframework.data.jpa.repository.support.JpaRepositoryFactory.<init>(JpaRepositoryFactory.java:57)
at org.springframework.data.jpa.repository.support.JpaRepositoryFactoryBean.createRepositoryFactory(JpaRepositoryFactoryBean.java:79)
at org.springframework.data.jpa.repository.support.JpaRepositoryFactoryBean.doCreateRepositoryFactory(JpaRepositoryFactoryBean.java:69)
at org.springframework.data.repository.core.support.TransactionalRepositoryFactoryBeanSupport.createRepositoryFactory(TransactionalRepositoryFactoryBeanSupport.java:72)
at org.springframework.data.repository.core.support.RepositoryFactoryBeanSupport.afterPropertiesSet(RepositoryFactoryBeanSupport.java:216)
at org.springframework.data.jpa.repository.support.JpaRepositoryFactoryBean.afterPropertiesSet(JpaRepositoryFactoryBean.java:92)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1637)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1574)
... 12 more
为什么不能 Spring 实例化两个存储库？
我修好了！
正确的配置在https://github.com/serrodcal/spring-jta-atomikos
基本上，问题是：
<jpa:repositories base-package="org.sergio.jtaSpringProject.repositories"/>
Jpa 存储库需要知道 entityManagerFactory 和 transactionManager。我解决了这个问题：
<jpa:repositories base-package="org.sergio.jtaSpringProject.repositories"
entity-manager-factory-ref="entityManagerFactory"
transaction-manager-ref="transactionManager"/>
我正在尝试使用 Atomikos 将 Spring JPA/Hibernate 项目与 JTA 集成。
我正在开发一个小示例，您可以找到它 in this repository
您可以在那里看到所有内容（persistence.xml、applicationContext.xml 等）。但我将在这里展示该文件的片段：
persistence.xml:
<persistence-unit name="presistence-unit" transaction-type="JTA"> <!-- transaction-type="RESOURCE_LOCAL"> -->
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<jta-data-source>jdbc/ct</jta-data-source>
<class>org.sergio.jtaSpringProject.entities.Transfer</class>
<class>org.sergio.jtaSpringProject.entities.Client</class>
<properties>
<property name="hibernate.hbm2ddl.auto" value="update" />
<property name="hibernate.show_sql" value="false" />
<property name="hibernate.dialect" value="org.hibernate.dialect.MySQL5InnoDBDialect" />
<property name="hibernate.connection.autocommit" value="false" />
<property name="hibernate.transaction.factory_class" value="org.hibernate.engine.transaction.internal.jta.CMTTransactionFactory" />
<!-- <property name="hibernate.transaction.factory_class" value="com.atomikos.icatch.jta.hibernate3.AtomikosJTATransactionFactory" /> -->
<property name="hibernate.transaction.manager_lookup_class" value="com.atomikos.icatch.jta.hibernate3.TransactionManagerLookup" />
</properties>
</persistence-unit>
applicationContext.xml:
<!-- Create proxy instances of Repository interfaces -->
<jpa:repositories base-package="org.sergio.jtaSpringProject.repositories"/>
<tx:annotation-driven transaction-manager="transactionManager"/>
<bean id="dataSource" class="com.atomikos.jdbc.AtomikosDataSourceBean"
init-method="init" destroy-method="close">
<property name="uniqueResourceName">
<value>XADBMS</value>
</property>
<property name="xaDataSourceClassName">
<value>com.mysql.jdbc.jdbc2.optional.MysqlXADataSource</value>
</property>
<property name="xaProperties">
<props>
<prop key="URL">jdbc:mysql://localhost:3306/ct</prop>
<prop key="user">root</prop>
<prop key="password">root</prop>
</props>
</property>
<property name="maxPoolSize" value="3" />
<property name="minPoolSize" value="1" />
</bean>
<bean id="entityManagerFactory"
class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="jpaVendorAdapter">
<bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
<property name="showSql" value="true" />
<property name="generateDdl" value="true" />
<property name="database" value="MYSQL" />
</bean>
</property>
<property name="persistenceXmlLocation">
<value>persistence.xml</value>
</property>
<property name="persistenceUnitName" value="presistence-unit" />
</bean>
<bean id="atomikosTransactionManager" class="com.atomikos.icatch.jta.UserTransactionManager"
init-method="init" destroy-method="close">
<property name="forceShutdown" value="false" />
</bean>
<bean id="atomikosUserTransaction" class="com.atomikos.icatch.jta.UserTransactionImp">
<property name="transactionTimeout" value="300" />
</bean>
<bean id="transactionManager"
class="org.springframework.transaction.jta.JtaTransactionManager"
depends-on="atomikosTransactionManager,atomikosUserTransaction">
<property name="transactionManager" ref="atomikosTransactionManager" />
<property name="userTransaction" ref="atomikosUserTransaction" />
<property name="allowCustomIsolationLevels" value="true" />
</bean>
当我 运行 这个项目时，我得到下一个错误：
Exception in thread "main" org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'clientRepository': Invocation of init method failed; nested exception is java.lang.NullPointerException
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1578)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:545)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482)
at org.springframework.beans.factory.support.AbstractBeanFactory.getObject(AbstractBeanFactory.java:305)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:301)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:196)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:753)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:834)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:537)
at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:139)
at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:83)
at org.sergio.jtaSpringProject.App.main(App.java:30)
Caused by: java.lang.NullPointerException
at org.hibernate.engine.transaction.internal.jta.JtaStatusHelper.getStatus(JtaStatusHelper.java:76)
at org.hibernate.engine.transaction.internal.jta.JtaStatusHelper.isActive(JtaStatusHelper.java:118)
at org.hibernate.engine.transaction.internal.jta.CMTTransaction.join(CMTTransaction.java:149)
at org.hibernate.jpa.spi.AbstractEntityManagerImpl.joinTransaction(AbstractEntityManagerImpl.java:1602)
at org.hibernate.jpa.spi.AbstractEntityManagerImpl.postInit(AbstractEntityManagerImpl.java:210)
at org.hibernate.jpa.internal.EntityManagerImpl.<init>(EntityManagerImpl.java:91)
at org.hibernate.jpa.internal.EntityManagerFactoryImpl.internalCreateEntityManager(EntityManagerFactoryImpl.java:345)
at org.hibernate.jpa.internal.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:313)
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:606)
at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.invokeProxyMethod(AbstractEntityManagerFactoryBean.java:388)
at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean$ManagedEntityManagerFactoryInvocationHandler.invoke(AbstractEntityManagerFactoryBean.java:541)
at com.sun.proxy.$Proxy17.createEntityManager(Unknown Source)
at org.springframework.orm.jpa.SharedEntityManagerCreator$SharedEntityManagerInvocationHandler.invoke(SharedEntityManagerCreator.java:287)
at com.sun.proxy.$Proxy25.getDelegate(Unknown Source)
at org.springframework.data.jpa.provider.JpaClassUtils.isEntityManagerOfType(JpaClassUtils.java:46)
at org.springframework.data.jpa.provider.PersistenceProvider.fromEntityManager(PersistenceProvider.java:296)
at org.springframework.data.jpa.repository.support.JpaRepositoryFactory.<init>(JpaRepositoryFactory.java:57)
at org.springframework.data.jpa.repository.support.JpaRepositoryFactoryBean.createRepositoryFactory(JpaRepositoryFactoryBean.java:79)
at org.springframework.data.jpa.repository.support.JpaRepositoryFactoryBean.doCreateRepositoryFactory(JpaRepositoryFactoryBean.java:69)
at org.springframework.data.repository.core.support.TransactionalRepositoryFactoryBeanSupport.createRepositoryFactory(TransactionalRepositoryFactoryBeanSupport.java:72)
at org.springframework.data.repository.core.support.RepositoryFactoryBeanSupport.afterPropertiesSet(RepositoryFactoryBeanSupport.java:216)
at org.springframework.data.jpa.repository.support.JpaRepositoryFactoryBean.afterPropertiesSet(JpaRepositoryFactoryBean.java:92)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1637)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1574)
... 12 more
为什么不能 Spring 实例化两个存储库？
我修好了！
正确的配置在https://github.com/serrodcal/spring-jta-atomikos
基本上，问题是：
<jpa:repositories base-package="org.sergio.jtaSpringProject.repositories"/>
Jpa 存储库需要知道 entityManagerFactory 和 transactionManager。我解决了这个问题：
<jpa:repositories base-package="org.sergio.jtaSpringProject.repositories"
entity-manager-factory-ref="entityManagerFactory"
transaction-manager-ref="transactionManager"/>