por - spring boot

Inyección de Dependencia con Spring/Junit/JPA

Question

Intento crear pruebas JUnit para mis clases JPA DAO, usando Spring 2.5.6 y JUnit 4.8.1.

Mi caso de prueba se ve así:

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations={"classpath:config/jpaDaoTestsConfig.xml"} )
public class MenuItem_Junit4_JPATest extends BaseJPATestCase {

    private ApplicationContext context;
    private InputStream dataInputStream;
    private IDataSet dataSet;

    @Resource
    private IMenuItemDao menuItemDao;

    @Test
    public void testFindAll() throws Exception {
        assertEquals(272, menuItemDao.findAll().size());
    }

    ... Other test methods ommitted for brevity ...
}

Tengo lo siguiente en mi jpaDaoTestsConfig.xml:

<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:p="http://www.springframework.org/schema/p"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xsi:schemaLocation="http://www.springframework.org/schema/beans 
                           http://www.springframework.org/schema/beans/spring-beans.xsd
                           http://www.springframework.org/schema/tx
                           http://www.springframework.org/schema/tx/spring-tx.xsd">

  <!-- uses the persistence unit defined in the META-INF/persistence.xml JPA configuration file -->
  <bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalEntityManagerFactoryBean">
        <property name="persistenceUnitName" value="CONOPS_PU" /> 
  </bean>

    <bean id="groupDao" class="mil.navy.ndms.conops.common.dao.impl.jpa.GroupDao" lazy-init="true" />
    <bean id="permissionDao" class="mil.navy.ndms.conops.common.dao.impl.jpa.PermissionDao" lazy-init="true" />
    <bean id="applicationUserDao" class="mil.navy.ndms.conops.common.dao.impl.jpa.ApplicationUserDao" lazy-init="true" />
    <bean id="conopsUserDao" class="mil.navy.ndms.conops.common.dao.impl.jpa.ConopsUserDao" lazy-init="true" />

    <bean id="menuItemDao" class="mil.navy.ndms.conops.common.dao.impl.jpa.MenuItemDao" lazy-init="true" />

 <!-- enables interpretation of the @Required annotation to ensure that dependency injection actually occures -->
  <bean class="org.springframework.beans.factory.annotation.RequiredAnnotationBeanPostProcessor"/>  

  <!-- enables interpretation of the @PersistenceUnit/@PersistenceContext annotations providing convenient
       access to EntityManagerFactory/EntityManager -->
  <bean class="org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor"/>

  <!-- transaction manager for use with a single JPA EntityManagerFactory for transactional data access
       to a single datasource -->
  <bean id="jpaTransactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
      <property name="entityManagerFactory" ref="entityManagerFactory"/>
  </bean>

  <!-- enables interpretation of the @Transactional annotation for declerative transaction managment
       using the specified JpaTransactionManager -->
  <tx:annotation-driven transaction-manager="jpaTransactionManager" proxy-target-class="false"/>

</beans>

Ahora, cuando intento ejecutar esto, obtengo lo siguiente:

SEVERE: Caught exception while allowing TestExecutionListener [org.springframework.test.context.support.DependencyInjectionTestExecutionListener@fa60fa6] to prepare test instance [null(mil.navy.ndms.conops.common.dao.impl.MenuItem_Junit4_JPATest)] org.springframework.beans.factory.BeanCreationException: Error creating bean with name ''mil.navy.ndms.conops.common.dao.impl.MenuItem_Junit4_JPATest'': Injection of resource fields failed; nested exception is java.lang.IllegalStateException: Specified field type [interface javax.persistence.EntityManagerFactory] is incompatible with resource type [javax.persistence.EntityManager] at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.postProcessAfterInstantiation(CommonAnnotationBeanPostProcessor.java:292) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:959) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireBeanProperties(AbstractAutowireCapableBeanFactory.java:329) at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.injectDependencies(DependencyInjectionTestExecutionListener.java:110) at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.prepareTestInstance(DependencyInjectionTestExecutionListener.java:75) at org.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.java:255) at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.createTest(SpringJUnit4ClassRunner.java:93) at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.invokeTestMethod(SpringJUnit4ClassRunner.java:130) at org.junit.internal.runners.JUnit4ClassRunner.runMethods(JUnit4ClassRunner.java:61) at org.junit.internal.runners.JUnit4ClassRunner$1.run(JUnit4ClassRunner.java:54) at org.junit.internal.runners.ClassRoadie.runUnprotected(ClassRoadie.java:34) at org.junit.internal.runners.ClassRoadie.runProtected(ClassRoadie.java:44) at org.junit.internal.runners.JUnit4ClassRunner.run(JUnit4ClassRunner.java:52) at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:45) at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:460) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:673) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:386) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:196) Caused by: java.lang.IllegalStateException: Specified field type [interface javax.persistence.EntityManagerFactory] is incompatible with resource type [javax.persistence.EntityManager] at org.springframework.beans.factory.annotation.InjectionMetadata$InjectedElement.checkResourceType(InjectionMetadata.java:159) at org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor$PersistenceElement.(PersistenceAnnotationBeanPostProcessor.java:559) at org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor$1.doWith(PersistenceAnnotationBeanPostProcessor.java:359) at org.springframework.util.ReflectionUtils.doWithFields(ReflectionUtils.java:492) at org.springframework.util.ReflectionUtils.doWithFields(ReflectionUtils.java:469) at org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor.findPersistenceMetadata(PersistenceAnnotationBeanPostProcessor.java:351) at org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor.postProcessMergedBeanDefinition(PersistenceAnnotationBeanPostProcessor.java:296) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyMergedBeanDefinitionPostProcessors(AbstractAutowireCapableBeanFactory.java:745) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:448) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory$1.run(AbstractAutowireCapableBeanFactory.java:409) at java.security.AccessController.doPrivileged(AccessController.java:219) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:380) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:264) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:221) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:261) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:185) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:168) at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.autowireResource(CommonAnnotationBeanPostProcessor.java:435) at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.getResource(CommonAnnotationBeanPostProcessor.java:409) at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor$ResourceElement.getResourceToInject(CommonAnnotationBeanPostProcessor.java:537) at org.springframework.beans.factory.annotation.InjectionMetadata$InjectedElement.inject(InjectionMetadata.java:180) at org.springframework.beans.factory.annotation.InjectionMetadata.injectFields(InjectionMetadata.java:105) at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.postProcessAfterInstantiation(CommonAnnotationBeanPostProcessor.java:289) ... 18 more

Parece estar diciéndome que intenta almacenar un objeto EntityManager en un campo EntityManagerFactory, pero no entiendo cómo ni por qué. Mis clases DAO aceptan un EntityManager y EntityManagerFactory a través del atributo @PersistenceContext, y funcionan si los descargo y los ejecuto sin el atributo @ContextConfiguration (es decir, si uso XmlApplcationContext para cargar el DAO y EntityManagerFactory directamente en setUp ()).

Cualquier idea sería apreciada.

Answer 1

Estas son las combinaciones correctas de anotación + interfaz:

@PersistenceContext
private EntityManager entityManager;


@PersistenceUnit
private EntityManagerFactory entityManagerFactory;

Pero al usar la compatibilidad de Spring transaction y entity manager, no necesita EntityManagerFactory en absoluto.

La razón por la cual no necesita EntityManagerFactory es porque la creación de EntityManager es responsabilidad del administrador de transacciones. Esto es lo que sucede en pocas palabras:

• el administrador de transacciones se activa antes que sus métodos
• el administrador de transacciones obtiene EntityManagerFactory (se inyecta en él), crea un nuevo EntityManager , se establece en un ThreadLocal y comienza una nueva transacción.
• luego delega en el método de servicio
• siempre que se encuentre @PersistenceContext , se inyectará un proxy (en su Dao), que, cuando se acceda, obtiene el EntityManager actual que se ha configurado en ThreadLocal

Answer 2

Tuve que hacer la combinación siguiente, además de agregar el bote de aspectos de primavera a las propiedades del proyecto-> Aspecto de ruta y habilitar aspectos de primavera en pts. Por supuesto, en mi archivo de configuración de contexto de aplicación, definí Entitymanagerfactory.

@ContextConfiguration (locations = {"/META-INF/spring/applicationContext-domain.xml"}) public class ReaderTest extends AbstractJUnit4SpringContextTests {

@PersistenceContext private EntityManager entityManager;

Answer 3

Yo también tengo el mismo problema, cuando agregué el problema de la API java-persistence se resolvió.

<dependency>
    <groupId>javax.persistence</groupId>
    <artifactId>persistence-api</artifactId>
    <version>1.0.2</version>
</dependency>