# 測試代碼 > 所有的測試代碼，都位于Test測試文件夾中  ``` package teacher; import java.util.List; import org.hibernate.HibernateException; import org.hibernate.Query; import org.hibernate.Session; import org.hibernate.SessionFactory; import org.hibernate.Transaction; import org.hibernate.cfg.Configuration; import org.hibernate.service.ServiceRegistry; import org.hibernate.service.ServiceRegistryBuilder; import org.junit.Test; import entity.Teacher; public class IndexTest { @Test public void getLists() { // 實例化并加載數據庫配置文件 Configuration configuration = new Configuration().configure(); // 構造服務注冊對象 ServiceRegistry serviceRegistry = new ServiceRegistryBuilder() .applySettings(configuration.getProperties()) .buildServiceRegistry(); // 創建會話工廠（session factory）） SessionFactory sessionFactory = configuration .buildSessionFactory(serviceRegistry); // 創建會話（這里的session也是會話的意思，我們以前接觸的http中的session，處理的是用戶與服務器的對話） Session session = sessionFactory.getCurrentSession(); // 開啟事務（使用緩沖池進行數據庫的連接） Transaction transaction = session.beginTransaction(); // 在這里，必須使用try catch finally語句。來確定會話正常關閉. // 否則，當操作數據庫產生錯誤時，你可能需要重啟mysql服務 try { // 新插入兩條記錄 Teacher teacher1 = new Teacher(); teacher1.setName("zhangsan"); Teacher teacher2 = new Teacher(); teacher2.setName("lisi"); session.save(teacher1); session.save(teacher2); // 查詢Teacher表,注意：是Teacher ，而不是 teacher Query query = session.createQuery("from Teacher"); // 預查詢，只有在事務提交時，才進行查詢操作 List<Teacher> teachers = query.list(); for (Teacher teacher : teachers) { System.out.println(teacher.toString()); } // 提交事務 transaction.commit(); // 捕獲異常 } catch (HibernateException e) { throw e; } finally { // 如果session處于開啟狀態，則關閉session if (session.isOpen()) { // 關閉會話 session.close(); } } } } ``` # 測試 在hibernate配置項hbm2ddl.auto為create時。數據如下： ``` Hibernate: insert into Teacher (email, name, password, sex, username) values (?, ?, ?, ?, ?) Hibernate: insert into Teacher (email, name, password, sex, username) values (?, ?, ?, ?, ?) Hibernate: select teacher0_.id as id1_0_, teacher0_.email as email2_0_, teacher0_.name as name3_0_, teacher0_.password as password4_0_, teacher0_.sex as sex5_0_, teacher0_.username as username6_0_ from Teacher teacher0_ Teacher [id=1, name=zhangsan, username=null, email=null, sex=false, password=null] Teacher [id=2, name=lisi, username=null, email=null, sex=false, password=null] ``` > 如果你的hibernate.cfg.xml配置文件中的hbm2ddl.auto仍然為create, 在本節中，推薦你改為update。