hibernate双边的一对一关系

Hibernate: Running hbm2ddl schema export Hibernate: import file not found: /import.sql Hibernate: exporting generated schema to database Hibernate: alter table tb_sailor drop foreign key FK5E6B0C859D82289B Hibernate: Unsuccessful: alter table tb_sailor drop foreign key FK5E6B0C859D82289B Hibernate: Table 'one2one.tb_sailor' doesn't exist Hibernate: alter table tb_ship drop foreign key FKA4FE596DBCB325CB Hibernate: Unsuccessful: alter table tb_ship drop foreign key FKA4FE596DBCB325CB Hibernate: Table 'one2one.tb_ship' doesn't exist Hibernate: drop table if exists tb_sailor Hibernate: drop table if exists tb_ship Hibernate: create table tb_sailor (id integer not null auto_increment, name varchar(255), ship_id integer, primary key (id)) Hibernate: create table tb_ship (id integer not null auto_increment, name varchar(255), captain_id integer unique, primary key (id)) Hibernate: alter table tb_sailor add index FK5E6B0C859D82289B (ship_id), add constraint FK5E6B0C859D82289B foreign key (ship_id) references tb_ship (id) Hibernate: alter table tb_ship add index FKA4FE596DBCB325CB (captain_id), add constraint FKA4FE596DBCB325CB foreign key (captain_id) references tb_sailor (id) Hibernate: schema export complete