<?xml version="1.0" encoding="GBK"?> <project name="hibernate" basedir="." default=""> <property name="src" value="src"/> <property name="dest" value="classes"/> <path id="classpath"> <fileset dir="../../lib"> <include name="**/*.jar"/> </fileset> <pathelement path="${dest}"/> </path> <target name="compile" description="Compile all source code"> <delete dir="${dest}"/> <mkdir dir="${dest}"/> <copy todir="${dest}"> <fileset dir="${src}"> <exclude name="**/*.java"/> </fileset> </copy> <javac destdir="${dest}" debug="true" includeantruntime="yes" deprecation="false" optimize="false" failonerror="true"> <src path="${src}"/> <classpath refid="classpath"/> <compilerarg value="-Xlint:deprecation"/> </javac> </target> <target name="run" description="Run the main class" depends="compile"> <java classname="lee.UserManager" fork="yes" failonerror="true"> <classpath refid="classpath"/> </java> </target> </project>
<?xml version="1.0" encoding="GBK"?> <!-- 指定Hibernate配置文件的DTD信息 --> <!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration DTD 3.0//EN" "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd"> <!-- hibernate-configuration是配置文件的根元素 --> <hibernate-configuration> <session-factory> <!-- 指定连接数据库所用的驱动 --> <property name="connection.driver_class">com.mysql.jdbc.Driver</property> <!-- 指定连接数据库的url，其中hibernate是本应用连接的数据库名 --> <property name="connection.url">jdbc:mysql://localhost/hibernate</property> <!-- 指定连接数据库的用户名 --> <property name="connection.username">root</property> <!-- 指定连接数据库的密码 --> <property name="connection.password">32147</property> <!-- 指定连接池里最大连接数 --> <property name="hibernate.c3p0.max_size">20</property> <!-- 指定连接池里最小连接数 --> <property name="hibernate.c3p0.min_size">1</property> <!-- 指定连接池里连接的超时时长 --> <property name="hibernate.c3p0.timeout">5000</property> <!-- 指定连接池里最大缓存多少个Statement对象 --> <property name="hibernate.c3p0.max_statements">100</property> <property name="hibernate.c3p0.idle_test_period">3000</property> <property name="hibernate.c3p0.acquire_increment">2</property> <property name="hibernate.c3p0.validate">true</property> <!-- 指定数据库方言 --> <property name="dialect">org.hibernate.dialect.MySQL5InnoDBDialect</property> <!-- 根据需要自动创建数据库 --> <property name="hbm2ddl.auto">update</property> <!-- 显示Hibernate持久化操作所生成的SQL --> <property name="show_sql">true</property> <!-- 将SQL脚本进行格式化后再输出 --> <property name="hibernate.format_sql">true</property> <!-- 指定根据当前线程来界定上下文相关Session --> <property name="hibernate.current_session_context_class">thread</property> <!-- 罗列所有持久化类的类名 --> <mapping class="org.crazyit.app.domain.User"/> </session-factory> </hibernate-configuration>
package lee; import org.hibernate.*; import org.hibernate.internal.*; import org.hibernate.cfg.*; import org.hibernate.service.*; import org.hibernate.event.spi.*; import org.hibernate.event.service.spi.*; import org.hibernate.boot.registry.*; import java.util.*; import org.crazyit.app.domain.*; import org.crazyit.common.hibernate.*; /** * Description: * <br/>网站: <a href="http://www.crazyit.org">疯狂Java联盟</a> * <br/>Copyright (C), 2001-2016, Yeeku.H.Lee * <br/>This program is protected by copyright laws. * <br/>Program Name: * <br/>Date: * @author Yeeku.H.Lee kongyeeku@163.com * @version 1.0 */ public class UserManager { static Configuration cfg = new Configuration() // 加载hibernate.cfg.xml配置文件 .configure(); // 以Configuration实例来创建SessionFactory实例 static ServiceRegistry serviceRegistry = new StandardServiceRegistryBuilder() .applySettings(cfg.getProperties()).build(); static SessionFactory sf = cfg.buildSessionFactory(serviceRegistry); static{ // 获取该SessionFactory的事件监听器注册器 EventListenerRegistry elr = ((SessionFactoryImpl)sf) .getServiceRegistry().getService(EventListenerRegistry.class); // 使用用户指定的拦截器序列代替系统默认的save拦截器序列 elr.setListeners(EventType.SAVE, MySaveListener.class); // 使用用户指定的拦截器序列代替系统默认的load拦截器序列 elr.setListeners(EventType.LOAD, MyLoadListener.class); } public static void main(String[] args) { UserManager mgr = new UserManager(); mgr.testUser(); sf.close(); } private void testUser() { Session session = sf.getCurrentSession(); Transaction tx = session.beginTransaction(); // 创建一个User对象 User u1 = new User(); // 设置基本属性 u1.setName("crazyit.org"); u1.setAge(30); u1.setNationality("china"); // 保存一个User对象 session.save(u1); // 装载一个已有的User对象 User u = (User)session.get(User.class , 1); // 改变属性 u.setName("疯狂Java联盟"); tx.commit(); } }
package org.crazyit.app.domain; import java.util.*; import javax.persistence.*; /** * Description: * <br/>网站: <a href="http://www.crazyit.org">疯狂Java联盟</a> * <br/>Copyright (C), 2001-2016, Yeeku.H.Lee * <br/>This program is protected by copyright laws. * <br/>Program Name: * <br/>Date: * @author Yeeku.H.Lee kongyeeku@163.com * @version 1.0 */ @Entity @Table(name="user_inf") public class User { @Id @Column(name="user_id") @GeneratedValue(strategy=GenerationType.IDENTITY) private Integer id; private String name; private int age; private String nationality; // 无参数的构造器 public User() { } // 初始化全部成员变量的构造器 public User(Integer id , String name , int age , String nationality) { this.id = id; this.name = name; this.age = age; this.nationality = nationality; } // id的setter和getter方法 public void setId(Integer id) { this.id = id; } public Integer getId() { return this.id; } // name的setter和getter方法 public void setName(String name) { this.name = name; } public String getName() { return this.name; } // age的setter和getter方法 public void setAge(int age) { this.age = age; } public int getAge() { return this.age; } // nationality的setter和getter方法 public void setNationality(String nationality) { this.nationality = nationality; } public String getNationality() { return this.nationality; } }
package org.crazyit.common.hibernate; import org.hibernate.event.internal.DefaultLoadEventListener; import org.hibernate.HibernateException; import org.hibernate.event.spi.LoadEvent; import org.hibernate.event.spi.LoadEventListener; /** * Description: * <br/>网站: <a href="http://www.crazyit.org">疯狂Java联盟</a> * <br/>Copyright (C), 2001-2016, Yeeku.H.Lee * <br/>This program is protected by copyright laws. * <br/>Program Name: * <br/>Date: * @author Yeeku.H.Lee kongyeeku@163.com * @version 1.0 */ public class MyLoadListener extends DefaultLoadEventListener { // 在LoadEventListener接口仅仅定义了这个方法 public void onLoad(LoadEvent event, LoadEventListener.LoadType loadType) throws HibernateException { System.out.println("自定义的load事件"); System.out.println(event.getEntityClassName() + "==========" + event.getEntityId()); super.onLoad(event, loadType); } }
package org.crazyit.common.hibernate; import java.io.Serializable; import org.hibernate.event.internal.DefaultSaveEventListener; import org.hibernate.HibernateException; import org.hibernate.event.spi.SaveOrUpdateEvent; import org.hibernate.event.spi.LoadEventListener; /** * Description: * <br/>网站: <a href="http://www.crazyit.org">疯狂Java联盟</a> * <br/>Copyright (C), 2001-2016, Yeeku.H.Lee * <br/>This program is protected by copyright laws. * <br/>Program Name: * <br/>Date: * @author Yeeku.H.Lee kongyeeku@163.com * @version 1.0 */ // Hibernate的默认事件监听器类都被声明成non-final的了。 public class MySaveListener extends DefaultSaveEventListener { public Serializable performSaveOrUpdate(SaveOrUpdateEvent event) { System.out.println("自定义的save事件"); System.out.println(event.getObject()); return super.performSaveOrUpdate(event); } }
