org.springframework.data.mapping.PropertyReferenceException：NoプロパティdetachItemがFruitタイプのために見つかりました

Question

JPAリポジトリ（FruitRepository）のカスタム実装（FruitRepositoryCustomImpl）を追加しようとしています。ここに私のコードです -

import org.springframework.beans.factory.annotation.Autowired; 
import org.springframework.boot.SpringApplication; 
import org.springframework.boot.autoconfigure.SpringBootApplication; 
import org.springframework.data.jpa.repository.JpaRepository; 
import org.springframework.stereotype.Repository; 
import org.springframework.web.bind.annotation.*; 

import javax.persistence.*; 

interface FruitRepository extends JpaRepository<Fruit, Long>, FruitRepositoryCustom { 

} 

interface FruitRepositoryCustom { 
    void detachItem(Fruit fruit); 
} 

@Repository 
class FruitRepositoryCustomImpl implements FruitRepositoryCustom { 
    @PersistenceContext 
    private EntityManager entityManager; 

    @Override 
    public void detachItem(Fruit fruit) { 
     entityManager.detach(fruit); 
    } 

} 

@SpringBootApplication 
public class EatFruitApplication { 

    public static void main(String[] args) { 
     SpringApplication.run(EatFruitApplication.class, args); 
    } 
} 

とエンティティ

@Entity 
class Fruit { 
    @Id 
    @GeneratedValue 
    private Long id; 
    private String name; 

    public String getName() { 
     return name; 
    } 

    public void setName(String name) { 
     this.name = name; 
    } 

    public Long getId() { 
     return id; 
    } 

    public void setId(Long id) { 
     this.id = id; 
    } 
} 

など

@RestController 
@RequestMapping("/fruits") 
class FruitRestController { 
    @Autowired 
    private FruitRepository fruitRepository; 

    @RequestMapping(value = "/{fruitId}", method = RequestMethod.GET) 
    public Fruit readItem(@PathVariable Long fruitId) { 
     Fruit fruit = this.fruitRepository.findOne(fruitId); 
     return fruit; 
    } 

    @RequestMapping(method = RequestMethod.POST) 
    public Fruit addItem(@RequestBody Fruit fruit) { 
     fruitRepository.save(fruit); 
     return fruit; 
    } 
} 

しかし、私は、アプリケーションの実行中にエラーが発生し、次の取得しています。

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'fruitRestController': Injection of autowired dependencies failed; 
nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private eat.fruit.FruitRepository eat.fruit.FruitRestController.fruitRepository; 
nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'fruitRepository': Invocation of init method failed; 
nested exception is org.springframework.data.mapping.PropertyReferenceException: No property detachItem found for type Fruit! at 
org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:334) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE] at 
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1214) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE]  at 
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:543) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE] at 
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE] at 
org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE]  at 
org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE] at 
org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE] at 
org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE]  at 
org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:772) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE] at 
org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:839) ~[spring-context-4.2.6.RELEASE.jar:4.2.6.RELEASE] at 
org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:538) ~[spring-context-4.2.6.RELEASE.jar:4.2.6.RELEASE] at 
org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:118) ~[spring-boot-1.3.5.RELEASE.jar:1.3.5.RELEASE] at 
org.springframework.boot.SpringApplication.refresh(SpringApplication.java:766) [spring-boot-1.3.5.RELEASE.jar:1.3.5.RELEASE] at 
org.springframework.boot.SpringApplication.createAndRefreshContext(SpringApplication.java:361) [spring-boot-1.3.5.RELEASE.jar:1.3.5.RELEASE] at 
org.springframework.boot.SpringApplication.run(SpringApplication.java:307) [spring-boot-1.3.5.RELEASE.jar:1.3.5.RELEASE] at 
org.springframework.boot.SpringApplication.run(SpringApplication.java:1191) [spring-boot-1.3.5.RELEASE.jar:1.3.5.RELEASE] at 
org.springframework.boot.SpringApplication.run(SpringApplication.java:1180) [spring-boot-1.3.5.RELEASE.jar:1.3.5.RELEASE] at 
eat.fruit.EatFruitApplication.main(EatFruitApplication.java:36) [classes/:na] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_92] at 
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_92] at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_92] at 
java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_92]  at 
com.intellij.rt.execution.application.AppMain.main(AppMain.java:144) [idea_rt.jar:na] Caused by: 
org.springframework.beans.factory.BeanCreationException: Could not autowire field: private eat.fruit.FruitRepository 
eat.fruit.FruitRestController.fruitRepository; nested exception is 
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'fruitRepository': Invocation of init method failed; nested exception is org.springframework.data.mapping.PropertyReferenceException: No property detachItem found for type Fruit! at 
org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:573) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE] at 
org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE] at 
org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:331) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE] ... 22 common frames omitted 
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'fruitRepository': Invocation of init method failed; nested exception is 
org.springframework.data.mapping.PropertyReferenceException: No property detachItem found for type Fruit! at 
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1578) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE] at 
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:545) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE] at 
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE] at 
org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE]  at 
org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE] at 
org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE] at 
org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE]  at 
org.springframework.beans.factory.support.DefaultListableBeanFactory.findAutowireCandidates(DefaultListableBeanFactory.java:1192) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE] at 
org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1116) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE] at 
org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1014) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE] at 
org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:545) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE] ... 24 common frames omitted 
Caused by: org.springframework.data.mapping.PropertyReferenceException: No property detachItem found for type Fruit! at 
org.springframework.data.mapping.PropertyPath.<init>(PropertyPath.java:77) ~[spring-data-commons-1.11.4.RELEASE.jar:na]  at 
org.springframework.data.mapping.PropertyPath.create(PropertyPath.java:329) ~[spring-data-commons-1.11.4.RELEASE.jar:na] at 
org.springframework.data.mapping.PropertyPath.create(PropertyPath.java:309) ~[spring-data-commons-1.11.4.RELEASE.jar:na] at 
org.springframework.data.mapping.PropertyPath.from(PropertyPath.java:272) ~[spring-data-commons-1.11.4.RELEASE.jar:na] at 
org.springframework.data.mapping.PropertyPath.from(PropertyPath.java:243) ~[spring-data-commons-1.11.4.RELEASE.jar:na] at 
org.springframework.data.repository.query.parser.Part.<init>(Part.java:76) ~[spring-data-commons-1.11.4.RELEASE.jar:na]  at 
org.springframework.data.repository.query.parser.PartTree$OrPart.<init>(PartTree.java:235) ~[spring-data-commons-1.11.4.RELEASE.jar:na]  at 
org.springframework.data.repository.query.parser.PartTree$Predicate.buildTree(PartTree.java:373) ~[spring-data-commons-1.11.4.RELEASE.jar:na] at 
org.springframework.data.repository.query.parser.PartTree$Predicate.<init>(PartTree.java:353) ~[spring-data-commons-1.11.4.RELEASE.jar:na] at 
org.springframework.data.repository.query.parser.PartTree.<init>(PartTree.java:84) ~[spring-data-commons-1.11.4.RELEASE.jar:na]  at 
org.springframework.data.jpa.repository.query.PartTreeJpaQuery.<init>(PartTreeJpaQuery.java:62) ~[spring-data-jpa-1.9.4.RELEASE.jar:na]  at 
org.springframework.data.jpa.repository.query.JpaQueryLookupStrategy$CreateQueryLookupStrategy.resolveQuery(JpaQueryLookupStrategy.java:100) ~[spring-data-jpa-1.9.4.RELEASE.jar:na] at 
org.springframework.data.jpa.repository.query.JpaQueryLookupStrategy$CreateIfNotFoundQueryLookupStrategy.resolveQuery(JpaQueryLookupStrategy.java:211) ~[spring-data-jpa-1.9.4.RELEASE.jar:na] at 
org.springframework.data.jpa.repository.query.JpaQueryLookupStrategy$AbstractQueryLookupStrategy.resolveQuery(JpaQueryLookupStrategy.java:74) ~[spring-data-jpa-1.9.4.RELEASE.jar:na] at 
org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.<init>(RepositoryFactorySupport.java:416) ~[spring-data-commons-1.11.4.RELEASE.jar:na]  at 
org.springframework.data.repository.core.support.RepositoryFactorySupport.getRepository(RepositoryFactorySupport.java:206) ~[spring-data-commons-1.11.4.RELEASE.jar:na]  at 
org.springframework.data.repository.core.support.RepositoryFactoryBeanSupport.initAndReturn(RepositoryFactoryBeanSupport.java:251) ~[spring-data-commons-1.11.4.RELEASE.jar:na]  at 
org.springframework.data.repository.core.support.RepositoryFactoryBeanSupport.afterPropertiesSet(RepositoryFactoryBeanSupport.java:237) ~[spring-data-commons-1.11.4.RELEASE.jar:na] at 
org.springframework.data.jpa.repository.support.JpaRepositoryFactoryBean.afterPropertiesSet(JpaRepositoryFactoryBean.java:92) ~[spring-data-jpa-1.9.4.RELEASE.jar:na] at 
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1637) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE] at 
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1574) ~[spring-beans-4.2.6.RELEASE.jar:4.2.6.RELEASE] ... 34 common frames omitted 

助けてください。

ありがとうございました。

Answer 1

ほぼ正確にあなたが一つの大きな違いは、後にしている何ん@PersistenceContext注釈のSpringの取り扱い

：あなたは常にトランザクションを取得するには、EntityManagerをスコープとあなたが繁殖のようなものを持っているので、春には、同じスレッドのために、常に同じインスタンスを注入スレッドセーフについて心配する必要はありません。しかし、あなたはこのように拡張されたコンテキストを得ることはありません！ 私は、Spring 3と拡張永続コンテキストがうまく一緒に動いていないと考えています。これはSpring 3.1で変更されるかもしれませんが、私はそれがフォーカスにはないのではないかと心配しています。拡張永続コンテキストを使用する場合は、@PersistenceUnitアノテーションを使用してSpringにEntityManagerFactoryを挿入し、独自にEntityManagerを作成します。伝播のためには、インスタンスをパラメータとして渡すか、自分でThreadLocalに格納する必要があります。

は、このリンクを読んでみてください：http://docs.spring.io/spring-data/data-commons/docs/1.6.1.RELEASE/reference/html/repositories.html

例あなたはそれが最も可能性が高い... SpringDataJPAのAPIを発信する場所をその例外のスタックトレースがあなたを言うだろう

public class SomeClient { 

     @Autowired 
     private PersonRepository repository; 

     public void doSomething() { 
     List<Person> persons = repository.findByLastname("Matthews"); 
     } 
    }