我试图在我的项目中添加一个数据库/模式/持久单元,但是我收到了以下错误:
没有定义唯一类型为[javax.persistence.EntityManagerFactory]的bean:期望单个bean但找到2个
我搜索了很多谷歌/ API,但无法找到Spring抱怨我的配置的原因。
这是我的applicationContext.xml的一部分:
<bean id="entityManagerFactory"
class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="persistenceUnitName" value="transactionManager" />
<property name="jpaVendorAdapter">
<bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
<property name="showSql" value="${show.hibernate.sql}" />
<property name="generateDdl" value="false" />
<property name="databasePlatform" value="org.hibernate.dialect.MySQL5Dialect" />
</bean>
</property>
</bean>
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
<property name="driverClassName" value="${database.driver}" />
<property name="url" ...
<property name="testOnBorrow" value="true" />
</bean>
<bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
<property name="entityManagerFactory" ref="entityManagerFactory" />
</bean>
<bean id="entityManagerFactoryREST" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="dataSource" ref="dataSourceREST" />
<property name="persistenceUnitName" value="REST" />
<property name="jpaVendorAdapter">
<bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
<property name="showSql" value="${show.hibernate.sql}" />
<property name="generateDdl" value="false" />
<property name="databasePlatform" value="org.hibernate.dialect.MySQL5Dialect" />
</bean>
</property>
</bean>
<bean id="dataSourceREST" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
<property name="driverClassName" value="${database.driver}" />
...
<property name="testOnBorrow" value="true" />
</bean>
<bean id="transactionManagerREST" class="org.springframework.orm.jpa.JpaTransactionManager">
<property name="entityManagerFactory" ref="entityManagerFactoryREST" />
</bean>
<tx:annotation-driven transaction-manager="REST"/>
<tx:annotation-driven transaction-manager="transactionManager"/>
一些问题:
- 我需要两个tx:annotation-driven吗?
- 我需要在工厂中指定persistenceUnitName吗?
我在Spring论坛上记录了一些笔记(链接)
就是这样...任何帮助都将受到欢迎!