随笔分类 -  hibernate

摘要：Hibernate1，error：Path expected for join!错误的写法：select lin from LoginInfo lin join person where lin.loginId =?正确的写法: select lin from LoginInfo lin join lin.person where lin.loginId =?注意：用这种方法进行关联查询的话，要确保对几个相关联实体的获取都要在session.getTransaction().commit();语句之前，即在session未关闭之前，否则会报问题2一样的错误。2，error：org.hibern 阅读全文

摘要：根据主键直接获得对象：customer = (Customer) sess.get(Customer.class, 1);或customer = (Customer) sess.load(Customer.class, 1);使用SQL的实体查询List users = (List<Customer>) sess.createSQLQuery("select * from CUSTOMER") .addEntity(Customer.class) .list();Iterator it = users.iterator();customer = (Custome 阅读全文

摘要：A hibernate.properties文件hibernate.dialect org.hibernate.dialect.MySQL5InnoDBDialecthibernate.connection.driver_class com.mysql.jdbc.Driverhibernate.connection.url jdbc:mysql://localhost:3306/hibernatehibernate.connection.username hibehibernate.connection.password 1234hibernate.connection.pool_size 5 阅读全文

摘要：A 在3.6.8版本中，可以直接用SessionFactory sf = new Configuration() .configure() // 直接用hibernate.cfg.xml来进行配置和创建 .buildSessionFactory();B 在4.0.0版本中，因Configuration().configure()方法被废除了，故用以下方式来创建Configuration config = new Configuration() .addResource("org/monday/domain/Customer.hbm.xml");ServiceRegistry 阅读全文