ValidationException: impossibile trovare un provider predefinito

Question

ho trovato tre voci per questo in overflow dello stack:

javax.validation.ValidationException: Unable to find default provider

javax.validation.ValidationException: Unable to find a default provider

Spring MVC 3 Validation - Unable to find a default provider

e tutti e tre dicono di aggiungere Hibernate Validator al percorso di classe. Cosa faccio quando l'ho fatto e ho ancora lo stesso errore?

1301 [main] ERROR org.springframework.web.servlet.DispatcherServlet - Context initialization failed 
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory' defined in ServletContext resource [/WEB-INF/db.xml]: Invocation of init method failed; nested exception is org.hibernate.HibernateException: Unable to get the default Bean Validation factory 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1455) 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:519) 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456) 
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:294) 
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:225) 
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:291) 
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193) 
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:567) 
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:913) 
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:464) 
    at org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:631) 
    at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:588) 
    at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:645) 
    at org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:508) 
    at org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:449) 
    at org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:133) 
    at javax.servlet.GenericServlet.init(GenericServlet.java:241) 
    at org.mortbay.jetty.servlet.ServletHolder.initServlet(ServletHolder.java:433) 
    at org.mortbay.jetty.servlet.ServletHolder.doStart(ServletHolder.java:256) 
    at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:39) 
    at org.mortbay.jetty.servlet.ServletHandler.initialize(ServletHandler.java:616) 
    at org.mortbay.jetty.servlet.Context.startContext(Context.java:140) 
    at org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1220) 
    at org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:513) 
    at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:448) 
    at com.google.gwt.dev.shell.jetty.JettyLauncher$WebAppContextWithReload.doStart(JettyLauncher.java:468) 
    at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:39) 
    at org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:130) 
    at org.mortbay.jetty.handler.RequestLogHandler.doStart(RequestLogHandler.java:115) 
    at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:39) 
    at org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:130) 
    at org.mortbay.jetty.Server.doStart(Server.java:222) 
    at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:39) 
    at com.google.gwt.dev.shell.jetty.JettyLauncher.start(JettyLauncher.java:672) 
    at com.google.gwt.dev.DevMode.doStartUpServer(DevMode.java:509) 
    at com.google.gwt.dev.DevModeBase.startUp(DevModeBase.java:1068) 
    at com.google.gwt.dev.DevModeBase.run(DevModeBase.java:811) 
    at com.google.gwt.dev.DevMode.main(DevMode.java:311) 
Caused by: org.hibernate.HibernateException: Unable to get the default Bean Validation factory 
    at org.hibernate.cfg.beanvalidation.BeanValidationActivator.applyDDL(BeanValidationActivator.java:127) 
    at org.hibernate.cfg.Configuration.applyBeanValidationConstraintsOnDDL(Configuration.java:1674) 
    at org.hibernate.cfg.Configuration.applyConstraintsToDDL(Configuration.java:1624) 
    at org.hibernate.cfg.Configuration.secondPassCompile(Configuration.java:1415) 
    at org.hibernate.cfg.Configuration.buildMappings(Configuration.java:1345) 
    at org.springframework.orm.hibernate3.LocalSessionFactoryBean.buildSessionFactory(LocalSessionFactoryBean.java:717) 
    at org.springframework.orm.hibernate3.AbstractSessionFactoryBean.afterPropertiesSet(AbstractSessionFactoryBean.java:211) 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1514) 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1452) 
    ... 37 more 
Caused by: java.lang.reflect.InvocationTargetException 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
    at java.lang.reflect.Method.invoke(Method.java:601) 
    at org.hibernate.cfg.beanvalidation.BeanValidationActivator.applyDDL(BeanValidationActivator.java:118) 
    ... 45 more 
Caused by: org.hibernate.HibernateException: Unable to build the default ValidatorFactory 
    at org.hibernate.cfg.beanvalidation.TypeSafeActivator.getValidatorFactory(TypeSafeActivator.java:345) 
    at org.hibernate.cfg.beanvalidation.TypeSafeActivator.applyDDL(TypeSafeActivator.java:106) 
    ... 50 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:342) 
    ... 51 more 

Answer 1

Il forum di primavera mi ha aiutato. http://forum.springsource.org/showthread.php?124477-ValidationException-Unable-to-find-a-default-provider

Qualcosa che ha a che fare con l'ibernazione 3.6.x. Ho eseguito il downgrade a Hibernate 3.5.6-Final e funziona come un incantesimo.

Grazie per tutto l'aiuto.

Answer 2

Aggiungi la dipendenza da sospensione del letargo con implementazione di JSR 303 (convalida del bean).

<dependency> 
    <groupId>org.hibernate</groupId> 
    <artifactId>hibernate-validator</artifactId> 
    <version>4.2.0.Final</version> 
</dependency> 

Answer 3

Forse sarebbe utile sapere che archivio ZIP scaricato dal sito del provider deve essere estratto in anticipo aggiungendo come la dipendenza al progetto. Ad esempio, provo ad aggiungere l'archivio hibernate-validator-4.3.2.Final-dist.zip alle dipendenze del mio progetto in IDE ma non funziona. Quindi lo estrai e aggiungo tutte le librerie dalla cartella dist al mio progetto e il problema scompare.