persistence.xml 文件中的多个持久性单元与 JPA 2.1
Multiple persistence unit in persistence.xml file with JPA 2.1
我正在尝试部署一个连接到 Oracle 数据库和 MySQL 的应用程序。我正在使用 JPA 2.1、Hibernate 4.3.7、Spring、Spring Data 和 WildFly 8.2，但在部署应用程序时出现一些错误。 Eclipse 显示错误。他说我不能使用多个持久性单元。我很困惑，因为我在网上发现一些文章显示文件具有多个持久性单元。 Like this one.
首先是我的 persistence.xml:
<?xml version="1.0" encoding="UTF-8"?>
<persistence version="2.1"
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://www.oracle.com/webfolder/technetwork/jsc/xml/ns/persistence/persistence_2_1.xsd">
<persistence-unit name="authwsPU" transaction-type="JTA">
<jta-data-source>java:/datasource/authwsds</jta-data-source>
..My MySQL mapping classes...
<properties>
<!-- MySQL -->
<property name="hibernate.dialect" value="org.hibernate.dialect.MySQLDialect"/>
<property name="hibernate.show_sql" value="true"/>
<property name="hibernate.hbm2ddl.auto" value="update"/>
<property name="hibernate.id.new_generator_mappings" value="true"/>
<property name="jboss.entity.manager.factory.jndi.name" value="java:jboss/authwsEMF" />
</properties>
</persistence-unit>
<persistence-unit name="antaresPU" transaction-type="JTA">
<jta-data-source>java:/datasource/antaresds</jta-data-source>
...My Oracle mapping classes...
<properties>
<property name="hibernate.dialect" value="org.hibernate.dialect.Oracle10gDialect"/>
<property name="hibernate.show_sql" value="true"/>
<property name="hibernate.id.new_generator_mappings" value="true"/>
<property name="jboss.entity.manager.factory.jndi.name" value="java:jboss/antaresEMF" />
</properties>
</persistence-unit>
</persistence>
我也在 jboss-web.xml 上进行了更改：
<?xml version="1.0" encoding="UTF-8"?>
<jboss-web xmlns="http://www.jboss.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.jboss.com/xml/ns/javaee
http://www.jboss.org/j2ee/schema/jboss-web_5_1.xsd">
<context-root>/authws</context-root>
<persistence-context-ref id="autenticacaoCtx">
<persistence-context-ref-name>auth_ws/authEMF</persistence-context-ref-name>
<persistence-unit-name>authwsPU</persistence-unit-name>
</persistence-context-ref>
<persistence-context-ref id="antaresCtx">
<persistence-context-ref-name>auth_ws/antaresEMF</persistence-context-ref-name>
<persistence-unit-name>antaresPU</persistence-unit-name>
</persistence-context-ref>
</jboss-web>
和错误。 Eclipse，警告过我，但我忽略了。:
Multiple persistence units defined - only the first persistence unit will be recognized
然后我部署了，WildFly 显示了这个错误：
Caused by: java.lang.IllegalArgumentException: JBAS011470: Persistence unitName was not specified and there are 2 persistence unit definitions in application deployment deployment "authws.war". Either change the application deployment to have only one persistence unit definition or specify the unitName for each reference to a persistence unit.
at org.jboss.as.jpa.container.PersistenceUnitSearch.ambiguousPUError(PersistenceUnitSearch.java:187)
at org.jboss.as.jpa.container.PersistenceUnitSearch.findWithinDeployment(PersistenceUnitSearch.java:153)
at org.jboss.as.jpa.container.PersistenceUnitSearch.findPersistenceUnitSupplier(PersistenceUnitSearch.java:75)
at org.jboss.as.jpa.container.PersistenceUnitSearch.resolvePersistenceUnitSupplier(PersistenceUnitSearch.java:64)
at org.jboss.as.jpa.processor.JPAAnnotationProcessor.getPersistenceUnit(JPAAnnotationProcessor.java:372)
at org.jboss.as.jpa.processor.JPAAnnotationProcessor.getBindingSource(JPAAnnotationProcessor.java:296)
at org.jboss.as.jpa.processor.JPAAnnotationProcessor.processMethod(JPAAnnotationProcessor.java:206)
at org.jboss.as.jpa.processor.JPAAnnotationProcessor.processPersistenceAnnotations(JPAAnnotationProcessor.java:143)
at org.jboss.as.jpa.processor.JPAAnnotationProcessor.deploy(JPAAnnotationProcessor.java:100)
at org.jboss.as.server.deployment.DeploymentUnitPhaseService.start(DeploymentUnitPhaseService.java:159) [wildfly-server-8.2.0.Final.jar:8.2.0.Final]
... 5 more
更新
我正在用更多细节更新问题。首先，我在其中为 Spring Data:
创建 EntityManagersFactory 的文件
<jee:jndi-lookup jndi-name="java:jboss/poEMF" id="poEntityManagerFactory" expected-type="javax.persistence.EntityManagerFactory" />
<jpa:repositories base-package="br.com.po.dao" entity-manager-factory-ref="poEntityManagerFactory" />
<jee:jndi-lookup jndi-name="java:jboss/antaresEMF" id="antaresEntityManagerFactory" expected-type="javax.persistence.EntityManagerFactory" />
<jpa:repositories base-package="br.com.antares.dao" entity-manager-factory-ref="antaresEntityManagerFactory" />
在线阅读更多相关信息，我发现问题可能出在注解 @PersistenceUnit 的规范上，我必须在其中指定 unitName，例如 @PersistenceUnit(unitName="defaultPersistenceUnit")。 但是，如果我使用 Spring 数据，我该怎么做？
例如，您可以在您的@Configuration 文件中使用@EnableJpaRepositories（如果您使用的是Bean 配置），如下所示：
一个配置文件：
@Configuration
@EnableTransactionManagement
@EnableJpaRepositories(
basePackages = {"com.yourpackage.xxxx"},
entityManagerFactoryRef = "entityManagerFactory1",
transactionManagerRef = "transactionManager")
public class FirstPersistenceContextConfig {}
....
还有第二个配置文件：
@Configuration
@EnableTransactionManagement
@EnableJpaRepositories(
basePackages = {"com.yourpackage.yyyy"},
entityManagerFactoryRef = "entityManagerFactory2",
transactionManagerRef = "transactionManager")
public class SecondPersistenceContextConfig {}
...
不知道你的问题有没有解决
如果您使用的是 XML 配置，试试这个：
<jpa:repositories base-package="[repository]"
entity-manager-factory-ref="mysqlManager" transaction-manager-ref="mysqlTransaction"/>
<jpa:repositories base-package="[repository]"
entity-manager-factory-ref="oracleManager" transaction-manager-ref="oracleTransaction"/>
<bean id="mysqlDataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<!-- MySQL Configuration Connection -->
</bean>
<bean id="mysqlTransaction" class="org.springframework.orm.jpa.JpaTransactionManager">
<property name="entityManagerFactory" ref="mysqlManager" />
</bean>
<bean id="mysqlManager" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="dataSource" ref="mysqlDataSource" />
<property name="persistenceUnitName" value="mysqlPU" />
<property name="packagesToScan" value="lh.ast.model" />
<property name="persistenceProviderClass" value="org.hibernate.ejb.HibernatePersistence"/>
<property name="jpaVendorAdapter">
<bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
<property name="databasePlatform" value="org.hibernate.dialect.MySQLDialect" />
<property name="showSql" value="true" />
</bean>
</property>
<property name="jpaProperties">
<props>
<prop key="hibernate.format_sql">true</prop>
<prop key="hibernate.hbm2ddl.auto">update</prop>
</props>
</property>
</bean>
<bean id="oracleDataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<!-- Oracle Configuration Connection -->
</bean>
<bean id="oracleTransaction" class="org.springframework.orm.jpa.JpaTransactionManager">
<property name="entityManagerFactory" ref="oracleManager" />
</bean>
<bean id="oracleManager" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="dataSource" ref="oracleDataSource" />
<property name="persistenceUnitName" value="oraclePU" />
<property name="packagesToScan" value="[your entity package]" />
<property name="persistenceProviderClass" value="org.hibernate.ejb.HibernatePersistence"/>
<property name="jpaVendorAdapter">
<bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
<property name="databasePlatform" value="org.hibernate.dialect.Oracle10gDialect" />
<property name="showSql" value="true" />
</bean>
</property>
<property name="jpaProperties">
<props>
<prop key="hibernate.format_sql">true</prop>
<prop key="hibernate.hbm2ddl.auto">update</prop>
</props>
</property>
</bean>
我正在尝试部署一个连接到 Oracle 数据库和 MySQL 的应用程序。我正在使用 JPA 2.1、Hibernate 4.3.7、Spring、Spring Data 和 WildFly 8.2，但在部署应用程序时出现一些错误。 Eclipse 显示错误。他说我不能使用多个持久性单元。我很困惑，因为我在网上发现一些文章显示文件具有多个持久性单元。 Like this one.
首先是我的 persistence.xml:
<?xml version="1.0" encoding="UTF-8"?>
<persistence version="2.1"
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://www.oracle.com/webfolder/technetwork/jsc/xml/ns/persistence/persistence_2_1.xsd">
<persistence-unit name="authwsPU" transaction-type="JTA">
<jta-data-source>java:/datasource/authwsds</jta-data-source>
..My MySQL mapping classes...
<properties>
<!-- MySQL -->
<property name="hibernate.dialect" value="org.hibernate.dialect.MySQLDialect"/>
<property name="hibernate.show_sql" value="true"/>
<property name="hibernate.hbm2ddl.auto" value="update"/>
<property name="hibernate.id.new_generator_mappings" value="true"/>
<property name="jboss.entity.manager.factory.jndi.name" value="java:jboss/authwsEMF" />
</properties>
</persistence-unit>
<persistence-unit name="antaresPU" transaction-type="JTA">
<jta-data-source>java:/datasource/antaresds</jta-data-source>
...My Oracle mapping classes...
<properties>
<property name="hibernate.dialect" value="org.hibernate.dialect.Oracle10gDialect"/>
<property name="hibernate.show_sql" value="true"/>
<property name="hibernate.id.new_generator_mappings" value="true"/>
<property name="jboss.entity.manager.factory.jndi.name" value="java:jboss/antaresEMF" />
</properties>
</persistence-unit>
</persistence>
我也在 jboss-web.xml 上进行了更改：
<?xml version="1.0" encoding="UTF-8"?>
<jboss-web xmlns="http://www.jboss.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.jboss.com/xml/ns/javaee
http://www.jboss.org/j2ee/schema/jboss-web_5_1.xsd">
<context-root>/authws</context-root>
<persistence-context-ref id="autenticacaoCtx">
<persistence-context-ref-name>auth_ws/authEMF</persistence-context-ref-name>
<persistence-unit-name>authwsPU</persistence-unit-name>
</persistence-context-ref>
<persistence-context-ref id="antaresCtx">
<persistence-context-ref-name>auth_ws/antaresEMF</persistence-context-ref-name>
<persistence-unit-name>antaresPU</persistence-unit-name>
</persistence-context-ref>
</jboss-web>
和错误。 Eclipse，警告过我，但我忽略了。:
Multiple persistence units defined - only the first persistence unit will be recognized
然后我部署了，WildFly 显示了这个错误：
Caused by: java.lang.IllegalArgumentException: JBAS011470: Persistence unitName was not specified and there are 2 persistence unit definitions in application deployment deployment "authws.war". Either change the application deployment to have only one persistence unit definition or specify the unitName for each reference to a persistence unit.
at org.jboss.as.jpa.container.PersistenceUnitSearch.ambiguousPUError(PersistenceUnitSearch.java:187)
at org.jboss.as.jpa.container.PersistenceUnitSearch.findWithinDeployment(PersistenceUnitSearch.java:153)
at org.jboss.as.jpa.container.PersistenceUnitSearch.findPersistenceUnitSupplier(PersistenceUnitSearch.java:75)
at org.jboss.as.jpa.container.PersistenceUnitSearch.resolvePersistenceUnitSupplier(PersistenceUnitSearch.java:64)
at org.jboss.as.jpa.processor.JPAAnnotationProcessor.getPersistenceUnit(JPAAnnotationProcessor.java:372)
at org.jboss.as.jpa.processor.JPAAnnotationProcessor.getBindingSource(JPAAnnotationProcessor.java:296)
at org.jboss.as.jpa.processor.JPAAnnotationProcessor.processMethod(JPAAnnotationProcessor.java:206)
at org.jboss.as.jpa.processor.JPAAnnotationProcessor.processPersistenceAnnotations(JPAAnnotationProcessor.java:143)
at org.jboss.as.jpa.processor.JPAAnnotationProcessor.deploy(JPAAnnotationProcessor.java:100)
at org.jboss.as.server.deployment.DeploymentUnitPhaseService.start(DeploymentUnitPhaseService.java:159) [wildfly-server-8.2.0.Final.jar:8.2.0.Final]
... 5 more
更新
我正在用更多细节更新问题。首先，我在其中为 Spring Data:
创建 EntityManagersFactory 的文件<jee:jndi-lookup jndi-name="java:jboss/poEMF" id="poEntityManagerFactory" expected-type="javax.persistence.EntityManagerFactory" />
<jpa:repositories base-package="br.com.po.dao" entity-manager-factory-ref="poEntityManagerFactory" />
<jee:jndi-lookup jndi-name="java:jboss/antaresEMF" id="antaresEntityManagerFactory" expected-type="javax.persistence.EntityManagerFactory" />
<jpa:repositories base-package="br.com.antares.dao" entity-manager-factory-ref="antaresEntityManagerFactory" />
在线阅读更多相关信息，我发现问题可能出在注解 @PersistenceUnit 的规范上，我必须在其中指定 unitName，例如 @PersistenceUnit(unitName="defaultPersistenceUnit")。 但是，如果我使用 Spring 数据，我该怎么做？
例如，您可以在您的@Configuration 文件中使用@EnableJpaRepositories（如果您使用的是Bean 配置），如下所示：
一个配置文件：
@Configuration
@EnableTransactionManagement
@EnableJpaRepositories(
basePackages = {"com.yourpackage.xxxx"},
entityManagerFactoryRef = "entityManagerFactory1",
transactionManagerRef = "transactionManager")
public class FirstPersistenceContextConfig {}
....
还有第二个配置文件：
@Configuration
@EnableTransactionManagement
@EnableJpaRepositories(
basePackages = {"com.yourpackage.yyyy"},
entityManagerFactoryRef = "entityManagerFactory2",
transactionManagerRef = "transactionManager")
public class SecondPersistenceContextConfig {}
...
不知道你的问题有没有解决
如果您使用的是 XML 配置，试试这个：
<jpa:repositories base-package="[repository]"
entity-manager-factory-ref="mysqlManager" transaction-manager-ref="mysqlTransaction"/>
<jpa:repositories base-package="[repository]"
entity-manager-factory-ref="oracleManager" transaction-manager-ref="oracleTransaction"/>
<bean id="mysqlDataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<!-- MySQL Configuration Connection -->
</bean>
<bean id="mysqlTransaction" class="org.springframework.orm.jpa.JpaTransactionManager">
<property name="entityManagerFactory" ref="mysqlManager" />
</bean>
<bean id="mysqlManager" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="dataSource" ref="mysqlDataSource" />
<property name="persistenceUnitName" value="mysqlPU" />
<property name="packagesToScan" value="lh.ast.model" />
<property name="persistenceProviderClass" value="org.hibernate.ejb.HibernatePersistence"/>
<property name="jpaVendorAdapter">
<bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
<property name="databasePlatform" value="org.hibernate.dialect.MySQLDialect" />
<property name="showSql" value="true" />
</bean>
</property>
<property name="jpaProperties">
<props>
<prop key="hibernate.format_sql">true</prop>
<prop key="hibernate.hbm2ddl.auto">update</prop>
</props>
</property>
</bean>
<bean id="oracleDataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<!-- Oracle Configuration Connection -->
</bean>
<bean id="oracleTransaction" class="org.springframework.orm.jpa.JpaTransactionManager">
<property name="entityManagerFactory" ref="oracleManager" />
</bean>
<bean id="oracleManager" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="dataSource" ref="oracleDataSource" />
<property name="persistenceUnitName" value="oraclePU" />
<property name="packagesToScan" value="[your entity package]" />
<property name="persistenceProviderClass" value="org.hibernate.ejb.HibernatePersistence"/>
<property name="jpaVendorAdapter">
<bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
<property name="databasePlatform" value="org.hibernate.dialect.Oracle10gDialect" />
<property name="showSql" value="true" />
</bean>
</property>
<property name="jpaProperties">
<props>
<prop key="hibernate.format_sql">true</prop>
<prop key="hibernate.hbm2ddl.auto">update</prop>
</props>
</property>
</bean>