spring 异常org.springframework.dao.IncorrectResultSizeDataAccessException: query did not return a unique result: 2
org.springframework.dao.IncorrectResultSizeDataAccessException: query did not return a unique result: 2; nested exception is javax.persistence.NonUniqueResultException: query did not return a unique result: 2
这个异常是说明数据库中的数据本应该是唯一的 但是是重复了 是数据的问题不是代码问题