Spring - DAO-Service 아키텍처에서 JPA로 마이그레이션

Question

Spring을 사용하여 웹 MVC를 작성했습니다. 나는 별도의 DAO와 봉사 수업을 사용했다.

내 오랜 코드 :

@Repository 
public class RoleDaoImpl implements RoleDao { 
... 
} 

@Service 
@Transactional 
public class RoleManagerImpl implements RoleManager { 
... 
} 

@Controller 
public class HomeController { 
    @Autowired 
    private RoleManager roleManager; 
... 
} 

지금은 스프링 JPA를 시도하고 싶습니다. 하지만 테스트 프로젝트를 DAO 서비스에서 Spring JPA로 다시 작성할 수는 없습니다.

내가 프로젝트를 실행 한 후 나는 오류 다음 얻을 GitHub의 https://github.com/martin159/springjpa

에 프로젝트 소스가 :

WARN : org.springframework.web.context.support.XmlWebApplicationContext - Exception encountered during context initialization - cancelling refresh attempt 
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in ServletContext resource [/WEB-INF/spring-servlet.xml]: Invocation of init method failed; nested exception is java.lang.IllegalArgumentException: No PersistenceProvider specified in EntityManagerFactory configuration, and chosen PersistenceUnitInfo does not specify a provider class name either 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1568) 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:540) 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476) 
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:302) 
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:229) 
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:298) 
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193) 
    at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:956) 
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:747) 
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:480) 
    at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:403) 
    at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:306) 
    at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:106) 
    at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4961) 
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5455) 
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) 
    at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:901) 
    at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:877) 
    at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:634) 
    at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:671) 
    at org.apache.catalina.startup.HostConfig$DeployDescriptor.run(HostConfig.java:1840) 
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) 
    at java.util.concurrent.FutureTask.run(FutureTask.java:266) 
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) 
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) 
    at java.lang.Thread.run(Thread.java:745) 
Caused by: java.lang.IllegalArgumentException: No PersistenceProvider specified in EntityManagerFactory configuration, and chosen PersistenceUnitInfo does not specify a provider class name either 
    at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:323) 
    at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:318) 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1627) 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1564) 
    ... 25 more 
ERROR: org.springframework.web.context.ContextLoader - Context initialization failed 

내가 봄 JPA와 많은 시간을 보내고, 그러나 나는 아직도에 수 그것을 고쳐라.

내가 뭘 잘못했는지 아십니까?

Answer 1

내 생각에 이것은 지속성 단위 이름이 무엇인지 봄을 말하지 않고 LocalContainerEntityManagerFactoryBean을 지정했기 때문이라고 생각합니다. 따라서 Spring은 디폴트 값을 사용합니다.

<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean"> 

한편의 persistence.xml에, 당신은 당신의 영속 단위 이름이

<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean"> 
    <property name="persistenceUnitName" value="springjpa"/> 
</bean>