Playframework: JPA error occurred (Unable to build EntityManagerFactory)
I started to contribute to one Play project in Java, downloaded code, created Play project, added libraries and set all I could and then created database. Finally everything seemed to be ok, but when i run localhost:9000 i get this error:
JPA error
@66kcmab39
Internal Server Error (500) for request GET /favicon.ico
JPA error
A JPA error occurred (Unable to build EntityManagerFactory): Unable to get the default Bean Validation factory
play.exceptions.JPAException: Unable to build EntityManagerFactory
at play.db.jpa.JPAPlugin.onApplicationStart(JPAPlugin.java:227)
at play.Play.start(Play.java:427)
at play.Play.detectChanges(Play.java:530)
at play.Invoker$Invocation.init(Invoker.java:100)
at Invocation.HTTP Request(Play!)
Caused by: org.hibernate.HibernateException: Unable to get the default Bean Validation factory
at org.hibernate.cfg.beanvalidation.BeanValidationActivator.applyDDL(BeanValidationActivator.java:104)
at org.hibernate.cfg.AnnotationConfiguration.applyBeanValidationConstraintsOnDDL(AnnotationConfiguration.java:477)
at org.hibernate.cfg.AnnotationConfiguration.applyConstraintsToDDL(AnnotationConfiguration.java:429)
at org.hibernate.cfg.AnnotationConfiguration.secondPassCompile(AnnotationConfiguration.java:403)
at org.hibernate.cfg.Configuration.buildMappings(Configuration.java:1206)
at org.hibernate.ejb.Ejb3Configuration.buildMappings(Ejb3Configuration.java:1459)
at org.hibernate.ejb.EventListenerConfigurator.configure(EventListenerConfigurator.java:193)
at org.hibernate.ejb.Ejb3Configuration.configure(Ejb3Configuration.java:1086)
at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:890)
at play.db.jpa.JPAPlugin.onApplicationStart(JPAPlugin.java:225)
... 4 more
Caused by: java.lang.reflect.InvocationTargetException
at org.hiber开发者_StackOverflownate.cfg.beanvalidation.BeanValidationActivator.applyDDL(BeanValidationActivator.java:95)
... 13 more
Caused by: org.hibernate.HibernateException: Unable to build the default ValidatorFactory
at org.hibernate.cfg.beanvalidation.TypeSafeActivator.getValidatorFactory(TypeSafeActivator.java:322)
at org.hibernate.cfg.beanvalidation.TypeSafeActivator.applyDDL(TypeSafeActivator.java:83)
... 14 more
Caused by: javax.validation.ValidationException: Unable to find a default provider
at javax.validation.Validation$GenericBootstrapImpl.configure(Validation.java:264)
at javax.validation.Validation.buildDefaultValidatorFactory(Validation.java:111)
at org.hibernate.cfg.beanvalidation.TypeSafeActivator.getValidatorFactory(TypeSafeActivator.java:319)
... 15 more
Play version: 1.1.1
MySQL5 OS UbuntuAny idea what can be wrong?
Thanks kvgrGood answer : you need to add the Hibernate Validator to your application.
Make sure the JPA annotations (such as @Id and @OneToMany) are either:
(1) All immediately above the fields.
@Id
public Long id;
(2) Or, All immediately above the getter for the fields.
private Long id;
@Id
public Long getId(){
return id;
}
Using a combination will lead to the error you are seeing.
// ERROR
@Id
private Long id;
private List<Child> children;
public Long getId(){
return id;
}
@OneToMany
public List<Child> getChildren(){
return id;
}
Note that some annotations such as:
@Constraints.Required
@Formats.DateTime(pattern="yyyy-MM-dd")
etc...
must be immediately above the field name. You cannot put these above the getters. But that's okay.
As a complement, for adding the validator, add this to your dependencies.yml
Application dependencies
# Application dependencies
require:
- play
- org.hibernate -> hibernate-core 3.6.9.Final:
force: true
- org.hibernate -> hibernate-validator 4.2.0.Final
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