hibernate 02之helloworld

安装方法说明（hibernatetools-4.1..Final）：
Help --> Install New Software...
Click Add...
In dialog Add Site dialog, click Archive...
Navigate to hibernatetools-Update-4.1..Final_2013--08_01---B605.zip and click Open
Clicking OK in the Add Site dialog will bring you back to the dialog 'Install'
Select the Jboss Tools hibernatetools Nightly Build Update Site that has appeared
Click Next and then Finish
Approve the license
Restart eclipse when that is asked

<?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> <!-- 配置连接数据库的基本信息 -->
<property name="connection.username">root</property>
<property name="connection.password"></property>
<property name="connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="connection.url">jdbc:mysql:///hibernate5</property> <!-- 配置 hibernate 的基本信息 -->
<!-- hibernate 所使用的数据库方言 （方言就是地方话如北京话，东北话）以下是MySQLDialect和MySQLInnoDBDialect的区别：MySQLDialect：表名不存在下使用。MySQLInnoDBDialect：表名存在的情况下使用-->
<property name="dialect">org.hibernate.dialect.MySQLDialect </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 -->
<property name="format_sql">true</property> <!-- 指定自动生成数据表的策略 -->
<property name="hbm2ddl.auto">update</property> <!-- 指定关联的 .hbm.xml 文件 --> <mapping resource="com/atguigu/hibernate/helloworld/News.hbm.xml"/> </session-factory></hibernate-configuration>

package com.atguigu.hibernate.helloworld;import java.util.Date;
//2创建持久化类
public class News { private Integer id; //field
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;
}
//带参数的构造器为了构建对象方便
public News(String title, String author, Date date) {
super();
this.title = title;
this.author = author;
this.date = date;
} public News(){ }@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 -- :: by Hibernate Tools 3.5..Final -->
<hibernate-mapping>
<class name="com.atguigu.hibernate.helloworld.News" table="NEWS">
<id name="id" type="java.lang.Integer">
<column name="ID" />
<!-- 指定主键的生成方式, native: 使用数据库本地方式 -->
<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.util.Date">
<column name="DATE" />
</property>
</class>
</hibernate-mapping>

package com.atguigu.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();
}}

NFO: HHH000262: Table not found: NEWS
二月 , :: 下午 org.hibernate.tool.hbm2ddl.SchemaUpdate execute
INFO: HHH000232: Schema update complete
Hibernate:
insert
into
NEWS
(TITLE, AUTHOR, DATE)
values
(?, ?, ?)