搭建一个单纯学习hibernate的项目详解编程语言

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> 
<modelVersion>4.0.0</modelVersion> 
<groupId>crazyjava</groupId> 
<artifactId>hibernateTest</artifactId> 
<version>0.0.1-SNAPSHOT</version> 
<packaging>jar</packaging> 
<name>hibernateTest</name> 
<url>http://maven.apache.org</url> 
<properties> 
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> 
</properties> 
<dependencies> 
<dependency> 
<groupId>junit</groupId> 
<artifactId>junit</artifactId> 
<version>4.10</version> 
<scope>test</scope> 
</dependency> 
<!-- mysql的依赖包 --> 
<dependency> 
<groupId>mysql</groupId> 
<artifactId>mysql-connector-java</artifactId> 
<version>5.1.38</version> 
</dependency> 
<!-- Hibernate的依赖包 --> 
<dependency> 
<groupId>org.hibernate</groupId> 
<artifactId>hibernate-core</artifactId> 
<version>4.3.11.Final</version> 
</dependency> 
<!-- log4j --> 
<dependency> 
<groupId>log4j</groupId> 
<artifactId>log4j</artifactId> 
<version>1.2.17</version> 
</dependency> 
</dependencies> 
</project>

<?xml version="1.0" encoding="UTF-8"?> 
<!DOCTYPE hibernate-configuration PUBLIC 
"-//Hibernate/Hibernate Configuration DTD 3.0//EN" 
"http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd"> 
<hibernate-configuration> 
<session-factory> 
<property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property> 
<property name="hibernate.connection.password">root</property> 
<property name="hibernate.connection.url">jdbc:mysql://localhost:3306/hibernate</property> 
<property name="hibernate.connection.username">root</property> 
<property name="hibernate.dialect">org.hibernate.dialect.MySQL5InnoDBDialect</property> 
<property name="hbm2ddl.auto">update</property> 
<property name="show_sql">true</property>         
<mapping class="org.crazyit.app.domain.News"/> 
<mapping class="org.crazyit.app.domain.Person"/> 
<mapping class="org.crazyit.app.domain.Address"/> 
</session-factory> 
</hibernate-configuration>

package lee; 
import org.hibernate.*; 
import org.hibernate.cfg.*; 
import org.hibernate.service.*; 
import org.hibernate.boot.registry.*; 
import org.crazyit.app.domain.*; 
public class NewsManager 
{ 
public static void main(String[] args) 
throws Exception 
{ 
// 实例化Configuration， 
Configuration conf = new Configuration() 
// 不带参数的configure()方法默认加载hibernate.cfg.xml文件， 
// 如果传入abc.xml作为参数，则不再加载hibernate.cfg.xml，改为加载abc.xml 
.configure(); 
ServiceRegistry serviceRegistry = new StandardServiceRegistryBuilder() 
.applySettings(conf.getProperties()).build(); 
// 以Configuration实例创建SessionFactory实例 
SessionFactory sf = conf.buildSessionFactory(serviceRegistry); 
// 创建Session 
Session sess = sf.openSession(); 
// 开始事务 
Transaction tx = sess.beginTransaction(); 
// 创建消息对象 
News n = new News(); 
// 设置消息标题和消息内容 
n.setTitle("疯狂Java联盟成立了"); 
n.setContent("疯狂Java联盟成立了，" 
+ "网站地址http://www.crazyit.org"); 
// 保存消息 
sess.save(n); 
// 提交事务 
tx.commit(); 
// 关闭Session 
sess.close(); 
sf.close(); 
} 
}

package org.crazyit.app.domain; 
import javax.persistence.*; 
@Entity 
@Table(name="news_inf") 
public class News 
{ 
// 消息类的标识属性 
@Id 
@GeneratedValue(strategy=GenerationType.IDENTITY) 
private Integer id; 
// 消息标题 
private String title; 
// 消息内容 
private String content; 
// id的setter和getter方法 
public void setId(Integer id) 
{ 
this.id = id; 
} 
public Integer getId() 
{ 
return this.id; 
} 
// title的setter和getter方法 
public void setTitle(String title) 
{ 
this.title = title; 
} 
public String getTitle() 
{ 
return this.title; 
} 
// content的setter和getter方法 
public void setContent(String content) 
{ 
this.content = content; 
} 
public String getContent() 
{ 
return this.content; 
} 
}

package org.crazyit.app.domain; 
import lee.HibernateUtil; 
import org.hibernate.Session; 
import org.hibernate.Transaction; 
import org.junit.After; 
import org.junit.Before; 
import org.junit.Test; 
public class TestQuery { 
private Session session = null; 
private Transaction tx = null; 
@Before 
public void before() { 
session = HibernateUtil.currentSession(); 
tx = session.beginTransaction(); 
} 
@Test 
public void test1() { 
Person p = new Person(); 
// 设置Person的name为crazyit字符串 
p.setName("crazyit"); 
p.setAge(21); 
// 创建一个瞬态的Address对象 
Address a = new Address("广州天河"); 
// 设置Person和Address之间的关联关系 
// p.setAddress(a); 
a.setPerson(p); 
// 持久化Address对象 
session.persist(a); 
// 持久化Person对象 
session.save(p); 
} 
@After 
public void after() { 
tx.commit(); 
HibernateUtil.closeSession(); 
} 
}