HV000030: No validator could be found for type: java.lang.Integer

HV000030: No validator could be found for type: java.lang.Integer.
http://stackoverflow.com/questions/5982741/error-no-validator-could-be-found-for-type-java-lang-integer

解决方法就是将org.hibernate.validator.constraints.NotEmpty换成 javax.validation.constraints.NotNull