<?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>           <!-- 数据库连接的配置信息,驱动类、数据库连接地址、用户名、密码 -->        <property name="connection.driver.class">com.mysql.jdbc.Driver</property>        <property name="connection.url">jdbc:mysql://localhost:3306/mydb1</property>        <property name="connection.username">root</property>        <property name="connection.password">123456</property>        <!-- JDBC connection pool (use the built-in) -->        <property name="connection.pool_size">1</property>       <!-- hibernate 所使用的数据库方言 ,配置不正确时可能会出现错误(不正确的时候建议从网上搜你数据的所有方言，然后一个一个尝试，数据库方言不会很多的)-->        <property name="dialect">org.hibernate.dialect.MySQL5Dialect</property>        <!-- 执行操作时是否在控制台打印 SQL -->        <property name="show_sql">true</property>        <!-- 是否对 SQL 进行格式化 --><!--就是SQL语句分行显示，让我们读起来更加舒服-->        <property name="format_sql">true</property>            <!-- 指定自动生成数据表的策略 --><!-- 当我们运行程序时Hibernate程序会帮我们自动的在数据库里面创建表-->        <property name="hbm2ddl.auto">update</property>                <!-- 指定关联的 .hbm.xml 文件，让持久化对象和数据库关联起来 -->        <mapping resource="com/jeremy/hibernate/helloworld/News.hbm.xml"/>    </session-factory></hibernate-configuration>

package com.jeremy.hibernate.helloworld;import java.sql.Date;public class News {    private Integer id;//持久化对象一般都提供ID，因为就是的数据库的primarykey，指定数据的唯一性    private String title;    private String author;    private Date date;    public Integer getId() {        return id;    }    public void setId(Integer id) {        this.id = id;    }    public String getTitle() {        return title;    }    public void setTitle(String title) {        this.title = title;    }    public String getAuthor() {        return author;    }    public void setAuthor(String author) {        this.author = author;    }    public Date getDate() {        return date;    }    public void setDate(Date date) {        this.date = date;    }

   public News() {//而且持久化对象也一定要有一个无参的构造器，方便Hibernate调用            }

 public News(String title, String author, Date date) {
   super(); 
   this.title = title; 
   this.author = author; 
   this.date = date;
 } 
 @Override
 public String toString() { 
 return "News [id=" + id + ", title=" + title + ", author=" + author + ", date=" + date + "]";
 }

<?xml version="1.0"?><!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN""http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd"><!-- Generated 2014-9-27 21:57:33 by Hibernate Tools 3.4.0.CR1 --><hibernate-mapping>    <class name="com.jeremy.hibernate.helloworld.News" table="NEWS"><!--类和表关联起来-->        <id name="id" type="java.lang.Integer">            <column name="ID" />            <!--生成主键的方式-->            <generator class="native" />        </id>        <property name="title" type="java.lang.String">            <column name="TITLE" />        </property>        <property name="author" type="java.lang.String">            <column name="AUTHOR" />        </property>        <property name="date" type="java.sql.Date">            <column name="DATE" />        </property>    </class></hibernate-mapping>

package com.jeremy.hibernate.helloworld;import java.sql.Date;import org.hibernate.Session;import org.hibernate.SessionFactory;import org.hibernate.Transaction;import org.hibernate.cfg.Configuration;import org.hibernate.service.ServiceRegistry;import org.hibernate.service.ServiceRegistryBuilder;import org.junit.Test;public class HibernateTest {    @Test    public void test() {                System.out.println("test...");                //1. 创建一个 SessionFactory 对象        SessionFactory sessionFactory = null;                //1). 创建 Configuration 对象: 对应 hibernate 的基本配置信息和 对象关系映射信息        Configuration configuration = new Configuration().configure();                //4.0 之前这样创建//        sessionFactory = configuration.buildSessionFactory();                //2). 创建一个 ServiceRegistry 对象: hibernate 4.x 新添加的对象        //hibernate 的任何配置和服务都需要在该对象中注册后才能有效.        ServiceRegistry serviceRegistry =                 new ServiceRegistryBuilder().applySettings(configuration.getProperties())                                            .buildServiceRegistry();                //3).        sessionFactory = configuration.buildSessionFactory(serviceRegistry);                //2. 创建一个 Session 对象        Session session = sessionFactory.openSession();                //3. 开启事务        Transaction transaction = session.beginTransaction();                //4. 执行保存操作        News news = new News("Java12345", "ATGUIGU", new Date(new java.util.Date().getTime()));        session.save(news);                //5. 提交事务         transaction.commit();                //6. 关闭 Session        session.close();                //7. 关闭 SessionFactory 对象        sessionFactory.close();    }    }