Hibernate4.3.5入门HelloWorld

浏览数：20 / 时间：2015年06月20日

本文给出一个简单的Hibernate4.3.5入门实例，配置方式采用XML文件方式（这种方式已经不是主流了，目前越来越多采用Annotation方式映射POJO实体）

代码结构如下图所示：主要用到hibernate-release-4.3.5.Final\lib\required下的jar

在这里只展示出主要的代码

1、HibernateUtil.java

 1 package com.wangp.hibernate.helper;
 2 
 3 import org.hibernate.SessionFactory;
 4 import org.hibernate.boot.registry.StandardServiceRegistryBuilder;
 5 import org.hibernate.cfg.Configuration;
 6 import org.hibernate.service.ServiceRegistry;
 7 
 8 public class HibernateUtil {
 9 
10     private static final SessionFactory sessionFactory = buildSessionFactory();
11 
12     private static SessionFactory buildSessionFactory() {
13         try {
14             Configuration configuration = new Configuration();
15             configuration.configure();
16             ServiceRegistry serviceRegistry = new StandardServiceRegistryBuilder().applySettings(configuration.getProperties()).build();
17             SessionFactory sessionFactory = configuration.buildSessionFactory(serviceRegistry);
18             return sessionFactory;
19         }
20         catch (Throwable ex) {
21             System.err.println("buildSessionFactory() error:" + ex);
22             throw new ExceptionInInitializerError(ex);
23         }
24     }
25 
26     public static SessionFactory getSessionFactory() {
27         return sessionFactory;
28     }
29 
30 }

2、测试类

 1 import org.hibernate.HibernateException;
 2 import org.hibernate.Session;
 3 
 4 import com.wangp.hibernate.helper.HibernateUtil;
 5 import com.wangp.hibernate.model.Hibernate;
 6 
 7 public class HibernateTest {
 8     public static void main(String[] args) {
 9         try {
10             //实例化POJO类
11             Hibernate h = new Hibernate();
12             h.setDriverName("oracle.jdbc.OracleDriver");
13             h.setId("1");
14             h.setUrl("jdbc:oracle:thin:@localhost:1521@orcl");
15             //获取Session
16             Session session = HibernateUtil.getSessionFactory().openSession();
17             session.beginTransaction();
18             //curd操作
19             session.save(h);
20             session.getTransaction().commit();
21         } catch (HibernateException e) {
22             e.printStackTrace();
23         }
24     }
25 }