常見hibernate面試題1.Hibernate有哪幾種查詢數(shù)據的方式

hibernateHibernate(1)(2)OID(5)load()get()loadJavaUsersuser=(Users)session.load(Users.class,userId);Usersuser=(Users)session.load(Users.class,getJavaUsersuser=(Users)session.get(Users.class,userId);Usersuser=(Users)session.get(Users.class,1：userIdget的是一個null；如果通過load加載，則返回一個對象，如果后面代碼如user（user.getPassword()）會拋出異常：2：load，getJavaUsersuser=(Users)session.load(Users.class,userId);Usersuser=(Users)session.load(Users.class,JavaUsersuser=(Users)session.get(Users.class,userId);Usersuser=(Users)session.get(Users.class,Usersuser=(Users)session.load(Users.class,userId)sql。JavaUsersuser=(Users)session.load(Users.class,userId);Usersuser=(Users)session.load(Users.class,userId);2loadhibernatemapmapkeyuserIdgetId()mapkey對JDBC數(shù)據庫的代碼做了封裝，大大簡化了數(shù)據層繁瑣的重復性HibernateJDBCORMDAOhibernateJavaHibernateHibernate2：a)b)Hibernate3HibernateHibernateHibernate條件：數(shù)據不會被第修改、數(shù)據大小在可接受范圍、數(shù)據更新頻率低、同 第緩存的實HibernateSql、Criteria,objectcomptosition1 屬性查2 參數(shù)查詢、命名參數(shù)查3 關聯(lián)查4 分頁查5 統(tǒng)計函使向一對多關聯(lián)，不使用單向一對Bag,=====================HibernateSessionFactory？（多選SessionFactory一個SessionFactory對象對應一個數(shù)據庫源據庫源，只需要創(chuàng)建一個。SessionFactoryload()CustomerSetordersOrderCustomer.hbm.xmlorders<set>B)<one-to-many>C)<many-to-one><set>元素有一個cascade屬性，如果希望Hibernate級存集合中的對象，casecade？（單選）D)save-Session以下程序的打印結果是什么？（單選tx=Customerc1=(Customer)session.load(Customer.class,newLong(1));Customerc2=(Customer)session.load(Customer.class,newLong(1));Customernametx=Customernew執(zhí)行以上程序，Hibernateupdate？（單選0B)1C)2Customercustomer=newCustomer();//line1customer.setName(\"Tom\");//line2Sessionsession1=sessionFactory.openSession();//line3Transactiontx1=session1.beginTransaction();//line4session1.save(customer);//line4mit();//line5session1.close();A)line1B)line2C)line3D)line4E)line5Customercustomer=newCustomer();//line1customer.setName(\"Tom\");//line2Sessionsession1=sessionFactory.openSession();//line3Transactiontx1=session1.beginTransaction();//line4session1.save(customer);//line4mit();//line5session1.close();A)line1B)line2C)line3D)line4E)line5以下哪一種檢索策略利用了外連結查詢？（單選立即檢索B)延遲檢索C)CustomerordersSessionsession=sessionFactory.openSession();tx=session.beginTransaction();Customercustomer=(Customer)session.get(Customer.class,newLong(1)); tor A)編譯出錯B)編譯通過，并正常運行C)HQLSQL，以下哪些說法正確？（多選HQLSQLHQL面向對象，而SQL關系數(shù)據HQLSQLselect,insert,update,deleteHQLinsert,updatedelete事務級別是由誰實現(xiàn)的？（單選JavaB)Hibernate