吴裕雄--天生自然轻量级JAVA EE企业应用开发Struts2Sping4Hibernate整合开发学习笔记：Hibernate_EventFrame

<?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);
    }
}