使用spring jpa hibernate框架时报错：javax.validation.UnexpectedTypeException: HV000030

错误信息：

[#%&*^]20190521121942:497.!react:all.,RctJobExecutor-1#D9AA5167921A464CA9DDA14943545426%NA&*A^:WARN>org.springframework.transaction.TransactionSystemException: Could not commit JPA transaction; nested exception is javax.persistence.RollbackException: Error while committing the transaction
	at org.springframework.orm.jpa.JpaTransactionManager.doCommit(JpaTransactionManager.java:526)
	at org.springframework.transaction.support.AbstractPlatformTransactionManager.processCommit(AbstractPlatformTransactionManager.java:761)
	at org.springframework.transaction.support.AbstractPlatformTransactionManager.commit(AbstractPlatformTransactionManager.java:730)
	at org.springframework.transaction.interceptor.TransactionAspectSupport.commitTransactionAfterReturning(TransactionAspectSupport.java:484)
	at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:291)
	at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
	at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:655)

...

Caused by: javax.persistence.RollbackException: Error while committing the transaction
	at org.hibernate.jpa.internal.TransactionImpl.commit(TransactionImpl.java:94)
	at org.springframework.orm.jpa.JpaTransactionManager.doCommit(JpaTransactionManager.java:517)
	... 29 more
Caused by: javax.validation.UnexpectedTypeException: HV000030: No validator could be found for constraint 'javax.validation.constraints.Size' validating type 'com.x.pss.react.dao.domain.protect.support.IsSupportReturn'. Check configuration for 'isSupportReturn'
	at org.hibernate.validator.internal.engine.constraintvalidation.ConstraintTree.throwExceptionForNullValidator(ConstraintTree.java:229)
	at org.hibernate.validator.internal.engine.constraintvalidation.ConstraintTree.getConstraintValidatorNoUnwrapping(ConstraintTree.java:310)
	at org.hibernate.validator.internal.engine.constraintvalidation.ConstraintTree.getConstraintValidatorInstanceForAutomaticUnwrapping(ConstraintTree.java:244)
	at org.hibernate.validator.internal.engine.constraintvalidation.ConstraintTree.getInitializedConstraintValidator(ConstraintTree.java:163)
	at org.hibernate.validator.internal.engine.constraintvalidation.ConstraintTree.validateConstraints(ConstraintTree.java:116)
	at org.hibernate.validator.internal.engine.constraintvalidation.ConstraintTree.validateComposingConstraints(ConstraintTree.java:398)
	at org.hibernate.validator.internal.engine.constraintvalidation.ConstraintTree.validateConstraints(ConstraintTree.java:98)
	at org.hibernate.validator.internal.engine.constraintvalidation.ConstraintTree.validateConstraints(ConstraintTree.java:87)
	at org.hibernate.validator.internal.metadata.core.MetaConstraint.validateConstraint(MetaConstraint.java:73)
	at org.hibernate.validator.internal.engine.ValidatorImpl.validateMetaConstraint(ValidatorImpl.java:617)
	at org.hibernate.validator.internal.engine.ValidatorImpl.validateConstraint(ValidatorImpl.java:580)
	at org.hibernate.validator.internal.engine.ValidatorImpl.validateConstraintsForSingleDefaultGroupElement(ValidatorImpl.java:524)
	at org.hibernate.validator.internal.engine.ValidatorImpl.validateConstraintsForDefaultGroup(ValidatorImpl.java:492)
	at org.hibernate.validator.internal.engine.ValidatorImpl.validateConstraintsForCurrentGroup(ValidatorImpl.java:457)
	at org.hibernate.validator.internal.engine.ValidatorImpl.validateInContext(ValidatorImpl.java:407)
	at org.hibernate.validator.internal.engine.ValidatorImpl.validate(ValidatorImpl.java:205)
	at org.hibernate.cfg.beanvalidation.BeanValidationEventListener.validate(BeanValidationEventListener.java:137)
	at org.hibernate.cfg.beanvalidation.BeanValidationEventListener.onPreInsert(BeanValidationEventListener.java:95)
	at org.hibernate.action.internal.EntityInsertAction.preInsert(EntityInsertAction.java:218)
	at org.hibernate.action.internal.EntityInsertAction.execute(EntityInsertAction.java:97)
	at org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:465)
	at org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:351)
	at org.hibernate.event.internal.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:350)
	at org.hibernate.event.internal.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:56)
	at org.hibernate.internal.SessionImpl.flush(SessionImpl.java:1258)
	at org.hibernate.internal.SessionImpl.managedFlush(SessionImpl.java:425)
	at org.hibernate.engine.transaction.internal.jdbc.JdbcTransaction.beforeTransactionCommit(JdbcTransaction.java:101)
	at org.hibernate.engine.transaction.spi.AbstractTransactionImpl.commit(AbstractTransactionImpl.java:177)
	at org.hibernate.jpa.internal.TransactionImpl.commit(TransactionImpl.java:77)

查看代码和资料发现，在jpa实体类中，枚举类型字段isSupportReturn上加了@NotEmpty导致了这个问题

查看@NotEmpty的源代码发现，@NotEmpty只能加在String、集合、数组上边，而且限制了最小长度为1，而像枚举类型、基本类型这样的字段是没有size这个特征的，所以不能使用@NotEmpty。

当字段使用@NotEmpty时，在提交该字段时会校验字段，该字段必须包含具体内容，不能是null，对于字符串来说，不能为""；对于集合或数组来说，其中必须包含元素。