hibernate在web下一个错误

今天第一次在web下运行，不给力啊，出现了下面的错误。

Hibernate Validator bean-validator-3.0-JBoss-4.0.2

Exception in thread "main" 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.generateDropSchemaScript(Configuration.java:972)

at org.hibernate.tool.hbm2ddl.SchemaExport.<init>(SchemaExport.java:130)

at org.hibernate.tool.hbm2ddl.SchemaExport.<init>(SchemaExport.java:92)

at com.zhang.bean.TestHibernate.testExport(TestHibernate.java:39)

at com.zhang.bean.TestHibernate.main(TestHibernate.java:19)

Caused by: java.lang.reflect.InvocationTargetException

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

at java.lang.reflect.Method.invoke(Unknown Source)

at org.hibernate.cfg.beanvalidation.BeanValidationActivator.applyDDL(BeanValidationActivator.java:118)

... 8 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)

... 13 more

查了半天的，找到改正的方法，需要在hibernate.cfg.xml中配置<property name="javax.persistence.validation.mode">none</property>  

具体原因

23.1.1. Adding Bean Validation

To enable Hibernate's Bean Validation integration, simply add a Bean Validation provider (preferably Hibernate Validation 4) on your classpath.

23.1.2. Configuration

By default, no configuration is necessary.

The Default group is validated on entity insert and update and the database model is updated accordingly based on the Default group as well.

You can customize the Bean Validation integration by setting the validation mode. Use the javax.persistence.validation.mode property and set it up for example in your persistence.xml file or your hibernate.cfg.xml file. Several options are possible:

auto (default): enable integration between Bean Validation and Hibernate (callback and ddl generation) only if Bean Validation is present in the classpath.
none: disable all integration between Bean Validation and Hibernate
callback: only validate entities when they are either inserted, updated or deleted. An exception is raised if no Bean Validation provider is present in the classpath.
ddl: only apply constraints to the database schema when generated by Hibernate. An exception is raised if no Bean Validation provider is present in the classpath. This value is not defined by the Java Persistence spec and is specific to Hibernate.
注意
You can use both callback and ddl together by setting the property to callback, dll

<persistence ...>
  <persistence-unit ...>
    ...
    <properties>
      <property name="javax.persistence.validation.mode"
                value="callback, ddl"/>
    </properties>
  </persistence-unit>
</persistence>
This is equivalent to auto except that if no Bean Validation provider is present, an exception is raised.
If you want to validate different groups during insertion, update and deletion, use:

javax.persistence.validation.group.pre-persist: groups validated when an entity is about to be persisted (default to Default)
javax.persistence.validation.group.pre-update: groups validated when an entity is about to be updated (default to Default)
javax.persistence.validation.group.pre-remove: groups validated when an entity is about to be deleted (default to no group)
org.hibernate.validator.group.ddl: groups considered when applying constraints on the database schema (default to Default)
Each property accepts the fully qualified class names of the groups validated separated by a comma (,)