用ssh搭建框架做增加功能时候，页面报错！

Question

页面报错：
org.springframework.dao.DataIntegrityViolationException: could not execute statement; SQL [n/a]; constraint [null]; nested exception is org.hibernate.exception.ConstraintViolationException: could not execute statement
控制台提示：
Hibernate:
select
SEQ_BOOKBASIC_ID.nextval
from
dual
Hibernate:
insert
into
T_BOOK_BASIC
(BOOK_NO, BOOK_NAME, BOOK_CLASSIFY_NO, AUTHOR, PUBLISH, PUBLISH_TIME, PRICE, KEY_WORD, IN_TIME, BORROW_COUNT, INVENTORY_NUMBER, REMOVED, CREATE_TIME, UPDATE_TIME, OPERATE_ID, Id)
values
(?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)

Answer 1

搞定了 oracle中的序列自增长出现错误，id被占用了，所以出错。
select seq_bookbasic_id.nextval from dual
序列已经是自增，但是某一个id已经被占用，所以导致了错误，在oracle中执行以上语句两次即可。