3、Hibernateの常用配置
3011 ワード
1、hibernateについて.cfg.xmlファイルの構成
Personについてhbm.xmlファイルの構成
3.HibernateUtilsの作成について
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory>
<!-- -->
<property name="hibernate.dialect">org.hibernate.dialect.MySQLMyISAMDialect</property>
<property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="hibernate.connection.url">jdbc:mysql:///student</property>
<property name="hibernate.connection.username">root</property>
<property name="hibernate.connection.password">1234</property>
<!-- -->
<property name="show_sql">true</property>
<property name="format_sql">true</property>
<property name="hibernate.hbm2ddl.auto">update</property>
<!-- -->
<mapping resource="com/baowei/entity/Person.hbm.xml" />
</session-factory>
</hibernate-configuration>
2、 Personについてhbm.xmlファイルの構成
<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping package="com.baowei.entity">
<class name="Person" table="person">
<id name="id">
<generator class="native" />
</id>
<property name="name" />
<property name="money" />
</class>
</hibernate-mapping>
3.HibernateUtilsの作成について
package com.baowei.utils;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;
import org.hibernate.service.ServiceRegistry;
import org.hibernate.service.ServiceRegistryBuilder;
public class HibernateUtil {
private final static SessionFactory FACTORY = buildSessionFactory();
private static SessionFactory buildSessionFactory() {
Configuration cfg = new Configuration().configure();
ServiceRegistry serviceRegistry = new ServiceRegistryBuilder()
.applySettings(cfg.getProperties()).buildServiceRegistry();
SessionFactory factory = cfg.buildSessionFactory(serviceRegistry);
return factory;
}
public static SessionFactory getSessionFactory() {
return FACTORY;
}
public static Session openSession() {
return FACTORY.openSession();
}
public static void close(Session session) {
if (session != null)
session.close();
}
}