为大家提供一个完整的Hibernate Annotation项目_源码下载

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项目结构：

在这里有必要跟大家说说Hibernate中的各个jar包的含义：。。。。。上面的log4j-1.2.11.jar包没有都可以哦！！！

 1 /**
 2  * 
 3  */
 4 package com.b510.hibernate.readme;
 5 
 6 /**
 7  * @author hongten<br>
 8  * @date 2013-3-25
 9  */
10 public class ReadMe {
11     /**
12      * Hibernate中各个jar文件的含义：
13      * 
14      * Hibernate的主要类库：
15      * ----------// begin  //-----------------
16      * hibernate3.jar                                   Hibernate主类库
17      * commons-collections-3.1.jar                      Commons的集合类库
18      * antlr-2.7.6.jar                                  Java开源语法分析生成器
19      * dom4j-1.6.1.jar                                  解析XML的类库
20      * javassist-3.12.0.GA.jar                          开源的分析，编辑和创建Java自己码的类库
21      * slf4j-api-1.6.6.jar                              各种日志处理接口
22      * slf4j-simple-1.6.6.jar                           各种日志处理接口的实现
23      * jta-1.1.jar                                      Java中的事务处理API
24      * ----------// end 8个 //-----------------
25      *  
26      * 数据库连接类库：
27      * ----------// begin  //-----------------
28      * mysql-connector-java-5.1.22-bin.jar              mysql数据库连接类库
29      * ----------// end 1个 //-----------------
30      * 
31      * Hibernate的注解Annotation类库：
32      * ----------// begin  //-----------------
33      * hibernate-commons-annotations-4.0.1.Final.jar    
34      * hibernate-jpa-2.0-api-1.0.1.Final.jar
35      * ----------// end 2个 //-----------------
36      * 
37      * 
38      * 
39      * Hibernate的注解EntityManager类库：
40      * ----------// begin  //-----------------
41      * hibernate-entitymanager.jar
42      * jboss-archive-browsing.jar
43      * ----------// end 2个 //-----------------
44      * 
45      * 
46      * Hibernate的注解org/apache/commons/logging/LogFactory类库：
47      * 如果缺少，会出现：Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/commons/logging/LogFactory 
48      * ----------// begin  //-----------------
49      * commons-logging-1.0.4.jar
50      * ----------// end 1个 //-----------------
51      * 
52      * 
53      * Hibernate的注解org/jboss/logging/BasicLogger类库：
54      * 如果缺少，会出现：java.lang.NoClassDefFoundError: org/jboss/logging/BasicLogger
55      * ----------// begin  //-----------------
56      * jboss-logging-3.0.0.GA.jar
57      * ----------// end 1个 //-----------------
58      * 
59      * 
60      * 共：15个
61      */
62 }

运行结果：

=================================================================

代码部分：

=================================================================

/hibernate_demo/src/com/b510/hibernate/bean/Student.java

 1 /**
 2  * 
 3  */
 4 package com.b510.hibernate.bean;
 5 
 6 import javax.persistence.Column;
 7 import javax.persistence.Entity;
 8 import javax.persistence.GeneratedValue;
 9 import javax.persistence.Id;
10 
11 /**
12  * 学生类
13  * @author hongten<br>
14  * @date 2013-3-25
15  */
16 @Entity
17 public class Student {
18 
19     private Integer id;
20     /**
21      * 姓名
22      */
23     private String name;
24     /**
25      * 性别
26      */
27     private String sex;
28     /**
29      * 学号
30      */
31     private String no;
32     /**
33      * 年龄
34      */
35     private int age;
36 
37     @Id
38     @GeneratedValue
39     public Integer getId() {
40         return id;
41     }
42 
43     public void setId(Integer id) {
44         this.id = id;
45     }
46 
47     public String getName() {
48         return name;
49     }
50 
51     public void setName(String name) {
52         this.name = name;
53     }
54 
55     public String getSex() {
56         return sex;
57     }
58 
59     public void setSex(String sex) {
60         this.sex = sex;
61     }
62 
63     public String getNo() {
64         return no;
65     }
66 
67     public void setNo(String no) {
68         this.no = no;
69     }
70 
71     @Column(columnDefinition = "int default 0")
72     public int getAge() {
73         return age;
74     }
75 
76     public void setAge(int age) {
77         this.age = age;
78     }
79 
80 }

/hibernate_demo/src/com/b510/hibernate/utils/EntityManagerUtil.java

 1 /**
 2  * 
 3  */
 4 package com.b510.hibernate.utils;
 5 
 6 import javax.persistence.EntityManager;
 7 import javax.persistence.EntityManagerFactory;
 8 import javax.persistence.Persistence;
 9 
10 /**
11  * EntityManager工具类
12  * @author hongten<br>
13  * @date 2013-3-25
14  */
15 public class EntityManagerUtil {
16 
17     private static final String PERSISTENCE_UNIT_NAME = "myPersistence";
18     private static final EntityManagerFactory ENTITY_MANAGER_FACTORY = Persistence.createEntityManagerFactory(PERSISTENCE_UNIT_NAME);
19     private static final EntityManager ENTITY_MANAGER;
20     
21     private EntityManagerUtil(){
22         //不做任何事儿
23     }
24     
25     //创建EntityManager实例
26     static {
27         ENTITY_MANAGER = ENTITY_MANAGER_FACTORY.createEntityManager();
28     }
29     
30     /**
31      * 获取EntityManager实例
32      * @return
33      */
34     public static EntityManager getEntityManagerInstance(){
35         return ENTITY_MANAGER == null ? ENTITY_MANAGER_FACTORY.createEntityManager() : ENTITY_MANAGER;
36     }
37     
38 }

/hibernate_demo/src/com/b510/hibernate/test/StudentTest.java

 1 /**
 2  * 
 3  */
 4 package com.b510.hibernate.test;
 5 
 6 import java.util.List;
 7 
 8 import javax.persistence.EntityManager;
 9 import javax.persistence.EntityTransaction;
10 
11 import com.b510.hibernate.bean.Student;
12 import com.b510.hibernate.utils.EntityManagerUtil;
13 
14 /**
15  * 测试类
16  * @author hongten<br>
17  * @date 2013-3-25
18  */
19 public class StudentTest {
20     
21     public static void main(String[] args) {
22         //studentAdd();
23         studentList();
24         //studentFindById(new Integer(1));
25         //studentMerge();
26     }
27     
28     /**
29      * 添加一条记录
30      */
31     public static void studentAdd(){
32         EntityManager entityManager = EntityManagerUtil.getEntityManagerInstance();
33         EntityTransaction entityTransaction = entityManager.getTransaction();
34         Student student = new Student();
35         student.setName("Tom Jhone");
36         student.setAge(21);
37         student.setSex("女");
38         student.setNo("2009081513");
39         
40         entityTransaction.begin();
41         entityManager.persist(student);
42         entityTransaction.commit();
43         entityManager.close();
44     }
45     
46     /**
47      * 查询所有的记录
48      */
49     @SuppressWarnings("unchecked")
50     public static void studentList(){
51         EntityManager entityManager = EntityManagerUtil.getEntityManagerInstance();
52         List<Student> students = entityManager.createQuery("from Student").getResultList();
53         
54         for(Student student : students){
55             System.out.println("学号："+student.getNo()+"  姓名："+student.getName()+"  性别："+student.getSex()+"  年龄："+student.getAge());
56         }
57         
58         entityManager.close();
59     }
60     
61     /**
62      * 根据id查询出相应记录
63      */
64     public static void studentFindById(Integer id){
65         EntityManager entityManager = EntityManagerUtil.getEntityManagerInstance();
66         Student student = entityManager.find(Student.class, id);
67         if(student != null){
68             System.out.println("学号："+student.getNo()+"  姓名："+student.getName()+"  性别："+student.getSex()+"  年龄："+student.getAge());
69         }
70         
71         entityManager.close();
72     }
73     
74     /**
75      * 更新数据
76      */
77     public static void studentMerge(){
78         EntityManager entityManager = EntityManagerUtil.getEntityManagerInstance();
79         EntityTransaction entityTransaction = entityManager.getTransaction();
80         entityTransaction.begin();
81         Integer id = 2;
82         Student student = entityManager.find(Student.class, id);
83         
84         if(student != null){
85             System.out.println("更新前....");
86             System.out.println("学号："+student.getNo()+"  姓名："+student.getName()+"  性别："+student.getSex()+"  年龄："+student.getAge());
87             student.setName("Hanyuan");
88             entityManager.merge(student);
89             entityTransaction.commit();
90         }
91         System.out.println("更新后....");
92         studentFindById(id);
93         entityManager.close();
94     }
95     
96 }

/hibernate_demo/src/META-INF/persistence.xml

 1 <persistence xmlns="http://java.sun.com/xml/ns/persistence"
 2     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 3     xsi:schemaLocation="http://java.sun.com/xml/ns/persistence
 4     http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd"
 5     version="2.0">
 6 
 7     <persistence-unit name="myPersistence">
 8         
 9         <provider>org.hibernate.ejb.HibernatePersistence</provider>
10         <properties>
11             <property name="hibernate.archive.autodetection" value="class" />
12             <property name="hibernate.show_sql" value="true" />
13             <property name="hibernate.format_sql" value="false" />
14             <property name="hibernate.dialect" value="org.hibernate.dialect.MySQL5Dialect" />
15             <property name="use_sql_comments" value="true" />
16               
17             <property name="hibernate.connection.driver_class" value="com.mysql.jdbc.Driver" />
18             <property name="hibernate.connection.url" value="jdbc:mysql://10.5.116.107:3306/mytest?characterEncoding=UTF-8" />
19             <property name="hibernate.connection.username" value="root" />
20             <property name="hibernate.connection.password" value="root" />
21             <property name="hibernate.hbm2ddl.auto" value="update" />
22         </properties>
23     </persistence-unit>
24 
25 </persistence>