Hibernate Annotations 实战介绍

HibernateUtil:

01 package test.hibernate;
02
03 import org.hibernate.HibernateException;
04 import org.hibernate.session;
05 import org.hibernate.SessionFactory;
06 import org.hibernate.cfg.Configuration;
07
08 public class HibernateUtil {
09   public static final SessionFactory sessionFactory;
10  
11   static {
12     try {
13       sessionFactory = new Configuration()
14               .configure()
15               .buildSessionFactory();
16     } catch (HibernateException e) {
17       // TODO Auto-generated catch block
18      
19       e.PRintStackTrace();
20       throw new ExceptionInInitializerError(e);
21     }
22   }
23  
24   public static final ThreadLocal<Session> session = new ThreadLocal<Session>();
25  
26   public static Session currentSession() throws HibernateException {
27     Session s = session.get();
28    
29     if(s == null) {
30       s = sessionFactory.openSession();
31       session.set(s);
32     }
33    
34     return s;
35   }
36  
37   public static void closeSession() throws HibernateException {
38     Session s = session.get();
39     if(s != null) {
40       s.close();
41     }
42     session.set(null);
43   }
44 }

Person:

01 package test.hibernate;
02
03 import java.util.LinkedList;
04 import java.util.List;
05
06 /**
07  *
08  */
09
10 @SuppressWarnings("serial")
11 public class Person implements java.io.Serializable {
12
13   // Fields
14
15   private Integer id;
16
17   private String name;
18
19   private String sex;
20
21   private Integer age;
22
23   private List list = new LinkedList();
24
25   // Collection accessors
26
27   public List getList() {
28     return list;
29   }
30
31   public void setList(List list) {
32     this.list = list;
33   }
34
35   /** default constrUCtor */
36   public Person() {
37   }
38
39   /** constructor with id */
40   public Person(Integer id) {
41     this.id = id;
42   }
43
44   // Property accessors
45
46   public Integer getId() {
47     return this.id;
48   }
49
50   public void setId(Integer id) {
51     this.id = id;
52   }
53
54   public String getName() {
55     return this.name;
56   }
57
58   public void setName(String name) {
59     this.name = name;
60   }
61
62   public String getSex() {
63     return this.sex;
64   }
65
66   public void setSex(String sex) {
67     this.sex = sex;
68   }
69
70   public Integer getAge() {
71     return this.age;
72   }
73
74   public void setAge(Integer age) {
75     this.age = age;
76   }
77
78 }