org.springframework.dao.DataIntegrityViolationException

hibernate更新的时候报了org.springframework.dao.DataIntegrityViolationException: Could not execute JDBC batch update; SQL [此处省略sql语句]; nested exception is org.hibernate.exception.DataException: Could not execute JDBC batch update

原因：传入regDate这个属性的数据是空字符[""],而数据库对应的类型是datetime,所以发生了异常。