如果是班级里设置了学生集合,那么只用保存班级,学生会自动保存到学生表里,
如果是学生里设置了班级引用,要先保存班级,再保存学生。亲测!
如果是学生里设置了班级引用,要先保存班级,再保存学生。亲测!
2017-10-02
@joinColumn(name="对用生成的表中的字段名",referencedColumnName="一的那一方的主键名")
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2017-09-28
SessionFactoryBuilder sessionFactoryBuilder = metadata.getSessionFactoryBuilder();
SessionFactory sessionFactory = sessionFactoryBuilder.build();
Session session = sessionFactory.getCurrentSession();
Transaction transaction = session.beginTransaction();
评论字数限制可恶
SessionFactory sessionFactory = sessionFactoryBuilder.build();
Session session = sessionFactory.getCurrentSession();
Transaction transaction = session.beginTransaction();
评论字数限制可恶
2017-09-24
hibernate5.2+SQL5.7不知为何不能自动引入CFG文档,虽可创建表单,但会报错,根据API修改后:
ServiceRegistry standardRegistry = new StandardServiceRegistryBuilder().configure("hibernate.cfg.xml").build();
MetadataSources sources = new MetadataSources(standardRegistry);
Metadata metadata = sources.getMetadataBuilder().build();
成功
ServiceRegistry standardRegistry = new StandardServiceRegistryBuilder().configure("hibernate.cfg.xml").build();
MetadataSources sources = new MetadataSources(standardRegistry);
Metadata metadata = sources.getMetadataBuilder().build();
成功
2017-09-24