java spring 4 hibernate 5 两个实体管理器上下文错误

Question

我有以下 spring xml 配置:

  <bean id="entityManagerFactory1" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
            <property name="persistenceXmlLocation" value="classpath:/astra_persistence.xml" />
            <property name="persistenceUnitName" value="myPersistenceUnit1" />
            <property name="dataSource" ref="astraDataSource" />
            <property name="jpaVendorAdapter" ref="astraJpaVendorAdapter" />
            <property name="jpaDialect" ref="jpaDialect" />
  </bean>

<bean id="entityManagerFactory2" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean" primary="true">
            <property name="persistenceXmlLocation" value="classpath:/META-INF/persistence.xml" />
            <property name="persistenceUnitName" value="myPersistenceUnit2" />
            <property name="dataSource" ref="myDataSource" />
            <property name="jpaVendorAdapter" ref="jpaVendorAdapter" />
            <property name="jpaDialect" ref="jpaDialect" />

            <property name="jpaProperties">
                <props>
                    <prop key="hibernate.physical_naming_strategy">com.mypackage.domain.jpa.model.naming.ImprovedPhysicalNamingStrategy</prop>
                    <prop key="hibernate.implicit_naming_strategy">org.hibernate.boot.model.naming.ImplicitNamingStrategyJpaCompliantImpl</prop>
                </props>
            </property>

            <property name="packagesToScan"
                      value="com.mypackage" />
</bean>

在我的 DAO 中:

@PersistenceContext(unitName = "myPersistenceUnit2")
protected EntityManager myEntityManager;

由于以下错误，我无法设置它:

NoUniqueBeanDefinitionException: No qualifying bean of type [javax.persistence.EntityManagerFactory] is defined

我尝试过:

1. xml 配置中的primary="true"- 不走运
2. unitName 而不是 @PersistenceContext 中的 name - 运气不好

如何解决？

Answer 1

尝试使用适当的名称来验证您的 Em

import org.springframework.beans.factory.annotation.Qualifier;

@Qualifier("entityManagerFactory2")
@PersistenceContext(unitName = "myPersistenceUnit2")
protected EntityManager myEntityManager;