Hibernate.基础篇《一》.Hibernate工具类.

 1 package com.charles.hibernate.test;
 2 
 3 import org.hibernate.SessionFactory;
 4 import org.junit.Test;
 5 
 6 import com.charles.hibernate.util.HibernateUtil;
 7 
 8 /**
 9  * <p>Type: RunTest</p>
10  * <p>Description: 测试方法.</p>
11  * @author baitang.<gy03554>
12  * @date 2018年10月17日 下午10:38:18
13  * @version v1.0.0
14  */
15 public class RunTest {
16 
17     @Test
18     public void getSessionFactory() {
19     
20         SessionFactory sessionFactory = HibernateUtil.getSessionFactory();
21         System.out.println("SessionFactory ===>>>> " + sessionFactory);
22     }
23 }

 1 package com.charles.hibernate.util;
 2 
 3 import org.hibernate.Session;
 4 import org.hibernate.SessionFactory;
 5 import org.hibernate.boot.MetadataSources;
 6 import org.hibernate.boot.registry.StandardServiceRegistry;
 7 import org.hibernate.boot.registry.StandardServiceRegistryBuilder;
 8 
 9 /**
10  * <p>Type: HibernateUtil</p>
11  * <p>Description: Hibernate工具类.《Hibernate.5.x》</p>
12  * @author baitang.<gy03554>
13  * @date 2018年10月17日 下午8:53:52
14  * @version v1.0.0
15  */
16 public class HibernateUtil {
17 
18     /** 创建Session的工厂：SessionFactory **/
19     private static SessionFactory sessionFactory = null;
20 
21     /** hibernate.cfg.xml配置文件的位置. **/
22     final static String CONFIGURE_RESOURCE = "hibernate.cfg.xml";
23 
24     static {
25         /** SessionFactory在应用中被创建一次 **/
26         StandardServiceRegistry serviceRegistry = new StandardServiceRegistryBuilder().configure(CONFIGURE_RESOURCE).build();
27 
28         try {
29             
30             sessionFactory = new MetadataSources(serviceRegistry).buildMetadata().buildSessionFactory();
31         } catch (Exception e) {
32             
33             /** sessionFacotry创建失败.销毁serviceRegistry **/
34             StandardServiceRegistryBuilder.destroy(serviceRegistry);
35         }
36     }
37     
38     /**
39      * 获取SessionFactory方法.
40      * @return SessionFactory
41      */
42     public static SessionFactory getSessionFactory() {
43         
44         return sessionFactory;
45     }
46     
47     /**
48      * 获取OpenSession方法
49      * @return Session
50      */
51     public static Session getOpenSession() {
52         
53         return sessionFactory.openSession();
54     }
55     
56     /**
57      * 获取CurrentSession 方法
58      * @return Session
59      */
60     public static Session getCurrentSession() {
61         
62         return sessionFactory.getCurrentSession();
63     }
64     
65     /**
66      * 关闭Session方法.
67      * @param session
68      */
69     public static void closeSession(Session session) {
70         
71         if(null != session) {
72             if(session.isOpen()) {
73                 session.close();
74             }
75         }
76     }
77 }

 1 <?xml version='1.0' encoding='UTF-8'?>
 2 <!DOCTYPE hibernate-configuration PUBLIC
 3           "-//Hibernate/Hibernate Configuration DTD 3.0//EN"
 4           "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
 5 
 6 <!-- Generated by MyEclipse Hibernate Tools. -->
 7 <hibernate-configuration>
 8 
 9     <session-factory>
10 
11         <property name="connection.driver_class">com.mysql.jdbc.Driver</property>
12         <property name="connection.url">jdbc:mysql://192.168.43.150:3306/hibernate</property>
13         <property name="connection.username">hibernate</property>
14         <property name="connection.password">hibernate</property>
15 
16         <!-- 方言 -->
17         <property name="dialect">org.hibernate.dialect.MySQL5InnoDBDialect</property>
18 
19         <!-- 显示SQL语句 -->
20         <property name="hibernate.show_sql">true</property>
21 
22         <!-- 格式化SQL语句 -->
23         <property name="hibernate.format_sql">true</property>
24 
25         <!-- 在启动时根据配置更新数据库 -->
26         <!-- <property name="hbm2ddl.auto">update</property> -->
27 
28         <!-- 在是使用getCuurentSesion方法获取session时，需配置 -->
29         <!-- <property name="hibernate.current_session_context_class">thread</property> -->
30 
31     </session-factory>
32 
33 </hibernate-configuration>