Spring Data JPA-Repository-Generierung Fehler mit Property-Ausdruck

Question

Ich versuche, eine JPA-Repository-Quelldaten-Methode mit einem Property Expression erstellen, aber einen Fehler beim Starten der Spring-Boot-Anwendung.

Einfache Repomethoden funktionieren, aber ich kann diesen Eigenschaftsausdruck nicht ordnungsgemäß ausführen. Ich bin mit Frühlings-Boot 1.4.3.RELEASE mit Abhängigkeit spring-boot-starter-data-jpa und Java 8.

Der Fehler und gesamte Ausgabe ist wie folgt:

/Library/Java/JavaVirtualMachines/jdk1.8.0_74.jdk/Contents/... 

    . ____   _   __ _ _ 
/\\/___'_ __ _ _(_)_ __ __ _ \ \ \ \ 
(()\___ | '_ | '_| | '_ \/ _` | \ \ \ \ 
\\/ ___)| |_)| | | | | || (_| | )))) 
    ' |____| .__|_| |_|_| |_\__, |//// 
=========|_|==============|___/=/_/_/_/ 
:: Spring Boot ::  (v1.4.3.RELEASE) 

2017-01-04 23:55:25.092 INFO 1788 --- [   main] com.ourkid.springdata.DemoApplication : Starting DemoApplication on SRA-MBA.local with PID 1788 (/Users/saj/Downloads/demo/target/classes started by saj in /Users/saj/Downloads/demo) 
2017-01-04 23:55:25.096 INFO 1788 --- [   main] com.ourkid.springdata.DemoApplication : No active profile set, falling back to default profiles: default 
2017-01-04 23:55:25.238 INFO 1788 --- [   main] s.c.a.AnnotationConfigApplicationContext : Refreshing org.springframework.context.annotation.AnnotationConfigApplicationContext@5427c60c: startup date [Wed Jan 04 23:55:25 GMT 2017]; root of context hierarchy 
2017-01-04 23:55:26.850 INFO 1788 --- [   main] j.LocalContainerEntityManagerFactoryBean : Building JPA container EntityManagerFactory for persistence unit 'default' 
2017-01-04 23:55:26.875 INFO 1788 --- [   main] o.hibernate.jpa.internal.util.LogHelper : HHH000204: Processing PersistenceUnitInfo [ 
    name: default 
    ...] 
2017-01-04 23:55:26.968 INFO 1788 --- [   main] org.hibernate.Version     : HHH000412: Hibernate Core {5.0.11.Final} 
2017-01-04 23:55:26.969 INFO 1788 --- [   main] org.hibernate.cfg.Environment   : HHH000206: hibernate.properties not found 
2017-01-04 23:55:26.971 INFO 1788 --- [   main] org.hibernate.cfg.Environment   : HHH000021: Bytecode provider name : javassist 
2017-01-04 23:55:27.093 INFO 1788 --- [   main] o.hibernate.annotations.common.Version : HCANN000001: Hibernate Commons Annotations {5.0.1.Final} 
2017-01-04 23:55:27.208 INFO 1788 --- [   main] org.hibernate.dialect.Dialect   : HHH000400: Using dialect: org.hibernate.dialect.H2Dialect 
2017-01-04 23:55:27.717 INFO 1788 --- [   main] org.hibernate.tool.hbm2ddl.SchemaExport : HHH000227: Running hbm2ddl schema export 
2017-01-04 23:55:27.730 INFO 1788 --- [   main] org.hibernate.tool.hbm2ddl.SchemaExport : HHH000230: Schema export complete 
2017-01-04 23:55:27.774 INFO 1788 --- [   main] j.LocalContainerEntityManagerFactoryBean : Initialized JPA EntityManagerFactory for persistence unit 'default' 
2017-01-04 23:55:28.063 WARN 1788 --- [   main] s.c.a.AnnotationConfigApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'timeExtensionRepository': Invocation of init method failed; nested exception is java.lang.IllegalStateException: Illegal attempt to dereference path source [null.status] of basic type 
2017-01-04 23:55:28.063 INFO 1788 --- [   main] j.LocalContainerEntityManagerFactoryBean : Closing JPA EntityManagerFactory for persistence unit 'default' 
2017-01-04 23:55:28.063 INFO 1788 --- [   main] org.hibernate.tool.hbm2ddl.SchemaExport : HHH000227: Running hbm2ddl schema export 
2017-01-04 23:55:28.070 INFO 1788 --- [   main] org.hibernate.tool.hbm2ddl.SchemaExport : HHH000230: Schema export complete 
2017-01-04 23:55:28.079 INFO 1788 --- [   main] utoConfigurationReportLoggingInitializer : 

Error starting ApplicationContext. To display the auto-configuration report re-run your application with 'debug' enabled. 
2017-01-04 23:55:28.092 ERROR 1788 --- [   main] o.s.boot.SpringApplication    : Application startup failed 

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'timeExtensionRepository': Invocation of init method failed; nested exception is java.lang.IllegalStateException: Illegal attempt to dereference path source [null.status] of basic type 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1589) ~[spring-beans-4.3.5.RELEASE.jar:4.3.5.RELEASE] 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:554) ~[spring-beans-4.3.5.RELEASE.jar:4.3.5.RELEASE] 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483) ~[spring-beans-4.3.5.RELEASE.jar:4.3.5.RELEASE] 
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306) ~[spring-beans-4.3.5.RELEASE.jar:4.3.5.RELEASE] 
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) ~[spring-beans-4.3.5.RELEASE.jar:4.3.5.RELEASE] 
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) ~[spring-beans-4.3.5.RELEASE.jar:4.3.5.RELEASE] 
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) ~[spring-beans-4.3.5.RELEASE.jar:4.3.5.RELEASE] 
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:740) ~[spring-beans-4.3.5.RELEASE.jar:4.3.5.RELEASE] 
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:866) ~[spring-context-4.3.5.RELEASE.jar:4.3.5.RELEASE] 
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:542) ~[spring-context-4.3.5.RELEASE.jar:4.3.5.RELEASE] 
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:761) [spring-boot-1.4.3.RELEASE.jar:1.4.3.RELEASE] 
    at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:371) [spring-boot-1.4.3.RELEASE.jar:1.4.3.RELEASE] 
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) [spring-boot-1.4.3.RELEASE.jar:1.4.3.RELEASE] 
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1186) [spring-boot-1.4.3.RELEASE.jar:1.4.3.RELEASE] 
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1175) [spring-boot-1.4.3.RELEASE.jar:1.4.3.RELEASE] 
    at com.ourkid.springdata.DemoApplication.main(DemoApplication.java:21) [classes/:na] 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_74] 
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_74] 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_74] 
    at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_74] 
    at com.intellij.rt.execution.application.AppMain.main(AppMain.java:147) [idea_rt.jar:na] 
Caused by: java.lang.IllegalStateException: Illegal attempt to dereference path source [null.status] of basic type 
    at org.hibernate.jpa.criteria.path.AbstractPathImpl.illegalDereference(AbstractPathImpl.java:82) ~[hibernate-entitymanager-5.0.11.Final.jar:5.0.11.Final] 
    at org.hibernate.jpa.criteria.path.AbstractPathImpl.get(AbstractPathImpl.java:174) ~[hibernate-entitymanager-5.0.11.Final.jar:5.0.11.Final] 
    at org.springframework.data.jpa.repository.query.QueryUtils.toExpressionRecursively(QueryUtils.java:622) ~[spring-data-jpa-1.10.6.RELEASE.jar:na] 
    at org.springframework.data.jpa.repository.query.QueryUtils.toExpressionRecursively(QueryUtils.java:576) ~[spring-data-jpa-1.10.6.RELEASE.jar:na] 
    at org.springframework.data.jpa.repository.query.JpaQueryCreator$PredicateBuilder.getTypedPath(JpaQueryCreator.java:334) ~[spring-data-jpa-1.10.6.RELEASE.jar:na] 
    at org.springframework.data.jpa.repository.query.JpaQueryCreator$PredicateBuilder.build(JpaQueryCreator.java:277) ~[spring-data-jpa-1.10.6.RELEASE.jar:na] 
    at org.springframework.data.jpa.repository.query.JpaQueryCreator.toPredicate(JpaQueryCreator.java:182) ~[spring-data-jpa-1.10.6.RELEASE.jar:na] 
    at org.springframework.data.jpa.repository.query.JpaQueryCreator.create(JpaQueryCreator.java:109) ~[spring-data-jpa-1.10.6.RELEASE.jar:na] 
    at org.springframework.data.jpa.repository.query.JpaQueryCreator.create(JpaQueryCreator.java:49) ~[spring-data-jpa-1.10.6.RELEASE.jar:na] 
    at org.springframework.data.repository.query.parser.AbstractQueryCreator.createCriteria(AbstractQueryCreator.java:109) ~[spring-data-commons-1.12.6.RELEASE.jar:na] 
    at org.springframework.data.repository.query.parser.AbstractQueryCreator.createQuery(AbstractQueryCreator.java:88) ~[spring-data-commons-1.12.6.RELEASE.jar:na] 
    at org.springframework.data.repository.query.parser.AbstractQueryCreator.createQuery(AbstractQueryCreator.java:73) ~[spring-data-commons-1.12.6.RELEASE.jar:na] 
    at org.springframework.data.jpa.repository.query.PartTreeJpaQuery$QueryPreparer.<init>(PartTreeJpaQuery.java:118) ~[spring-data-jpa-1.10.6.RELEASE.jar:na] 
    at org.springframework.data.jpa.repository.query.PartTreeJpaQuery$CountQueryPreparer.<init>(PartTreeJpaQuery.java:241) ~[spring-data-jpa-1.10.6.RELEASE.jar:na] 
    at org.springframework.data.jpa.repository.query.PartTreeJpaQuery.<init>(PartTreeJpaQuery.java:68) ~[spring-data-jpa-1.10.6.RELEASE.jar:na] 
    at org.springframework.data.jpa.repository.query.JpaQueryLookupStrategy$CreateQueryLookupStrategy.resolveQuery(JpaQueryLookupStrategy.java:103) ~[spring-data-jpa-1.10.6.RELEASE.jar:na] 
    at org.springframework.data.jpa.repository.query.JpaQueryLookupStrategy$CreateIfNotFoundQueryLookupStrategy.resolveQuery(JpaQueryLookupStrategy.java:214) ~[spring-data-jpa-1.10.6.RELEASE.jar:na] 
    at org.springframework.data.jpa.repository.query.JpaQueryLookupStrategy$AbstractQueryLookupStrategy.resolveQuery(JpaQueryLookupStrategy.java:77) ~[spring-data-jpa-1.10.6.RELEASE.jar:na] 
    at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.<init>(RepositoryFactorySupport.java:435) ~[spring-data-commons-1.12.6.RELEASE.jar:na] 
    at org.springframework.data.repository.core.support.RepositoryFactorySupport.getRepository(RepositoryFactorySupport.java:220) ~[spring-data-commons-1.12.6.RELEASE.jar:na] 
    at org.springframework.data.repository.core.support.RepositoryFactoryBeanSupport.initAndReturn(RepositoryFactoryBeanSupport.java:280) ~[spring-data-commons-1.12.6.RELEASE.jar:na] 
    at org.springframework.data.repository.core.support.RepositoryFactoryBeanSupport.afterPropertiesSet(RepositoryFactoryBeanSupport.java:266) ~[spring-data-commons-1.12.6.RELEASE.jar:na] 
    at org.springframework.data.jpa.repository.support.JpaRepositoryFactoryBean.afterPropertiesSet(JpaRepositoryFactoryBean.java:92) ~[spring-data-jpa-1.10.6.RELEASE.jar:na] 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1648) ~[spring-beans-4.3.5.RELEASE.jar:4.3.5.RELEASE] 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1585) ~[spring-beans-4.3.5.RELEASE.jar:4.3.5.RELEASE] 
    ... 20 common frames omitted 


Process finished with exit code 1 

Das Problem, dass in https://jira.spring.io/browse/DATAJPA-476 berichtete ähnlich aussieht, aber die zugrunde liegenden Fehler gemeint haben wurde behoben.

Answer 1

Die folgende Änderung an TimeExtension behebt das Problem.

@Entity 
class TimeExtension implements Serializable { 

    public final static long serialVersionUID = 3L; 

    @Id 
    @GeneratedValue 
    private Long id; 

    @Column(nullable = false) 
    private Date businessDate; 

    @OneToOne 
    @JoinColumn(nullable = false, name = "workplace_id") 
    private Workplace workplace; 

    @OneToOne 
    @JoinColumn(nullable = false, name = "status_id") 
    private Status status; 

    public Long getId() { 
     return id; 
    } 

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

    public Date getBusinessDate() { 
     return businessDate; 
    } 

    public void setBusinessDate(Date businessDate) { 
     this.businessDate = businessDate; 
    } 

    public Workplace getWorkplace() { 
     return workplace; 
    } 

    public void setWorkplace(Workplace workplace) { 
     this.workplace = workplace; 
    } 

    public Status getStatus() { 
     return status; 
    } 

    public void setStatus(Status status) { 
     this.status = status; 
    } 
} 

Answer 2

Vielleicht habe ich einige neue Funktionen von Spring und JPA verpasst, aber für mich sieht es so aus, als ob Sie keine Beziehungen auf Ihre Entitäten zugeordnet haben.

Die TimeExtension Einheit sollte irgendeine Beziehung zu Status und Workplace haben. Etwas wie @OneToMany, @ManyToOne, @OneToOne oder @ManyToMany. So kennen JPA die Beziehung zwischen den Entitäten.