Eclipse中Hibernate配置

path路径下导入 hibernate /lib/required目录下所有的jar包。以及连接 数据库 的Jar包

层次结构

hibernate.cfg.xml

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1.  version="1.0" encoding="UTF-8"?>  
3.         "-//Hibernate/Hibernate Configuration DTD 3.0//EN"  
4.         "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">  
5.           
6.   
7.       
8.          name="show_sql">true  
9.          name="hibernate.dialect">org.hibernate.dialect.MySQLDialect  
10.          name="hibernate.connection.driver_class">org.gjt.mm.mysql.Driver  
11.          name="hibernate.connection.url">jdbc:mysql://localhost:3306/hibernate  
12.          name="hibernate.connection.username">root  
13.          name="hibernate.connection.password">mysqladmin  
14.          resource="org/zbq/bean/User.hbm.xml"/>  
15.       
16.   

User. Java

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1. package org.zbq.util;  
2.   
3. import java.util.List;  
4.   
5. import org.hibernate.Query;  
6. import org.hibernate.Session;  
7. import org.hibernate.SessionFactory;  
8. import org.hibernate.Transaction;  
9. import org.hibernate.cfg.Configuration;  
10. import org.hibernate.service.ServiceRegistry;  
11. import org.hibernate.service.ServiceRegistryBuilder;  
12. import org.zbq.bean.User;  
13.   
14. public class HibernateUtil {  
15.     private static SessionFactory sessionFactory;  
16.       
17.     static{  
18.         try{  
19.             Configuration conf = new Configuration();  
20.             conf.configure();  
21.             ServiceRegistry sr = new ServiceRegistryBuilder()  
22.                                     .applySettings(conf.getProperties())  
23.                                     .buildServiceRegistry();  
24.               
25.             sessionFactory = conf.buildSessionFactory(sr);  
26.         } catch (Exception e) {  
27.             e.printStackTrace();  
28.         }  
29.     }  
30.       
31.       
32.     public static void save(User user) throws Exception{  
33.         Transaction tr = null;  
34.         Session session = sessionFactory.openSession();  
35.           
36.         try{  
37.             tr = session.beginTransaction();  
38. //          tr.begin();  
39.             session.save(user);  
40.             tr.commit();  
41.         } catch (Exception e) {  
42.             if(null != tr){  
43.                 tr.rollback();  
44.             }  
45.             throw e;  
46.         } finally {  
47.             session.close();  
48.         }  
49.     }  
50.       
51.     @SuppressWarnings("unchecked")  
52.     public static List listUsers() throws Exception{  
53.         List list = null;  
54.         Transaction tr = null;  
55.         Session session = sessionFactory.openSession();  
56.           
57.         try{  
58.             tr = session.beginTransaction();  
59. //          tr.begin();  
60.             String sql = "from User";  
61.             Query query = session.createQuery(sql);  
62.               
63.             list = (List)query.list();  
64.             tr.commit();  
65.         } catch (Exception e) {  
66.             e.printStackTrace();  
67.         } finally {  
68.             session.close();  
69.         }  
70.           
71.         return list;  
72.     }  
73. }  

User.hbm.xml

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1.  version="1.0" encoding="UTF-8"?>  
3.         "-//Hibernate/Hibernate Mapping DTD 3.0//EN"    
4.         "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">   
5.   
6.   
7.      name="org.zbq.bean.User" table="user">  
8.          name="id" column="id" type="int">  
9.              class="increment"/>  
10.           
11.           
12.          name="name" column="name" type="string"/>  
13.          name="pass" column="pass" type="string"/>         
14.       
15.   

HibernateUtil.java

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1. package org.zbq.util;  
2.   
3. import java.util.List;  
4.   
5. import org.hibernate.Query;  
6. import org.hibernate.Session;  
7. import org.hibernate.SessionFactory;  
8. import org.hibernate.Transaction;  
9. import org.hibernate.cfg.Configuration;  
10. import org.hibernate.service.ServiceRegistry;  
11. import org.hibernate.service.ServiceRegistryBuilder;  
12. import org.zbq.bean.User;  
13.   
14. public class HibernateUtil {  
15.     private static SessionFactory sessionFactory;  
16.       
17.     static{  
18.         try{  
19.             Configuration conf = new Configuration();  
20.             conf.configure();  
21.             ServiceRegistry sr = new ServiceRegistryBuilder()  
22.                                     .applySettings(conf.getProperties())  
23.                                     .buildServiceRegistry();  
24.               
25.             sessionFactory = conf.buildSessionFactory(sr);  
26.         } catch (Exception e) {  
27.             e.printStackTrace();  
28.         }  
29.     }  
30.       
31.       
32.     public static void save(User user) throws Exception{  
33.         Transaction tr = null;  
34.         Session session = sessionFactory.openSession();  
35.           
36.         try{  
37.             tr = session.beginTransaction();  
38. //          tr.begin();  
39.             session.save(user);  
40.             tr.commit();  
41.         } catch (Exception e) {  
42.             if(null != tr){  
43.                 tr.rollback();  
44.             }  
45.             throw e;  
46.         } finally {  
47.             session.close();  
48.         }  
49.     }  
50.       
51.     @SuppressWarnings("unchecked")  
52.     public static List listUsers() throws Exception{  
53.         List list = null;  
54.         Transaction tr = null;  
55.         Session session = sessionFactory.openSession();  
56.           
57.         try{  
58.             tr = session.beginTransaction();  
59. //          tr.begin();  
60.             String sql = "from User";  
61.             Query query = session.createQuery(sql);  
62.               
63.             list = (List)query.list();  
64.             tr.commit();  
65.         } catch (Exception e) {  
66.             e.printStackTrace();  
67.         } finally {  
68.             session.close();  
69.         }  
70.           
71.         return list;  
72.     }  
73. }  

测试类

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1. package org.zbq.test;  
2.   
3. import java.util.List;  
4.   
5. import org.zbq.bean.User;  
6. import org.zbq.util.HibernateUtil;  
7.   
8. public class HibernatUtilTest {  
9.   
10.     public static void main(String[] args) throws Exception {  
11.         User user = new User();  
12.         user.setId(2);  
13.         user.setName("cat");  
14.         user.setPass("intel123");  
15.         HibernateUtil.save(user);  
16.           
17.         List list = HibernateUtil.listUsers();  
18.         for(User u : list){  
19.             System.out.println(u.getName() + ":" + u.getPass());  
20.         }  
21.     }  
22.   
23. }