Hibernate xml quickstart

最新推荐文章于 2022-05-04 15:05:00 发布

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最新推荐文章于 2022-05-04 15:05:00 发布

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文章标签： XML Hibernate Ant JBoss Oracle

本文通过一个完整的示例介绍了如何使用 Hibernate 进行对象关系映射，包括配置文件 hibernate.cfg.xml 的设置、实体类 Message.java 及其映射文件 Message.hbm.xml 的定义，同时还展示了如何利用 HibernateUtil 和 Client 类进行数据的持久化操作。

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hibernate.cfg.xml

HibernateUtils.java

Client.java

Message.java

Message.hbm.xml

======================hibernate.cfg.xml======================

<?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>
  <property name="hibernate.dialect">
   org.hibernate.dialect.Oracle9Dialect
  </property>
  <property name="driverClassName">
   oracle.jdbc.OracleDriver
  </property>
  <property name="url">
   jdbc:oracle:thin:@172.21.104.41:1521:alpsd
  </property>
  <property name="username">portal</property>
  <property name="password">portal</property>

  <property name="show_sql">true</property>
  <property name="format_sql">true</property>
  <property name="hibernate.hbm2ddl.auto">create</property>
  <mapping resource="domain/Message.hbm.xml" />

 </session-factory>

</hibernate-configuration>

======================HibernateUtils.java======================

package persistance;

import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;

public class HibernateUtil {
	private static SessionFactory sessionFactory;
	static {
		try {
			sessionFactory = new Configuration().configure()
					.buildSessionFactory();
		} catch (Throwable ex) {
			throw new ExceptionInInitializerError(ex);
		}
	}

	public static SessionFactory getSessionFactory() {
		return sessionFactory;
	}

	public static void shutdown() {
		getSessionFactory().close();
	}

}

======================Client.java======================

package hello;

import java.util.Iterator;
import java.util.List;

import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.hibernate.cfg.Configuration;

import persistance.HibernateUtil;
import domain.Message;

public class HelloWorld {
	public static void main(String[] args) {
		Configuration cfg1;
		SessionFactory sf;
		Session session;
		cfg1 = new Configuration().configure();
		sf = cfg1.buildSessionFactory();
		session = sf.openSession();

		Message message = new Message("Hello World");
		Long msgId = (Long) session.save(message);
		/*
		 * Transaction tx = session.beginTransaction(); Message message = new
		 * Message("Hello World"); Long msgId = (Long) session.save(message);
		 * tx.commit(); session.close();
		 * 
		 * Session newSession = HibernateUtil.getSessionFactory().openSession();
		 * Transaction newTransaction = newSession.beginTransaction(); List
		 * messages = newSession.createQuery( "from Message m order by ? m.text
		 * asc").list(); System.out.println(messages.size() + " message(s)
		 * found:");
		 * 
		 * for (Iterator iter = messages.iterator(); iter.hasNext();) { Message
		 * loadedMsg = (Message) iter.next();
		 * System.out.println(loadedMsg.getText()); } newTransaction.commit();
		 * newSession.close(); HibernateUtil.shutdown();
		 */
	}
}

======================Message.java======================

package domain;

public class Message {
	private Long id;
	private String text;
	private Message nextMessage;

	Message() {
	}

	public Message(String text) {
		this.text = text;
	}

	public Long getId() {
		return id;
	}

	private void setId(Long id) {
		this.id = id;
	}

	public String getText() {
		return text;
	}

	public void setText(String text) {
		this.text = text;
	}

	public Message getNextMessage() {
		return nextMessage;
	}

	public void setNextMessage(Message nextMessage) {
		this.nextMessage = nextMessage;
	}
}

======================Message.hbm.xml======================

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC    "-//Hibernate/Hibernate Mapping DTD//EN"    "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping>
	<class name="domain.Message" table="MESSAGES">
		<id name="id" column="MESSAGE_ID" type="long">
			<generator class="increment" />
		</id>
		<property name="text" column="MESSAGE_TEXT" type="string"/>
		<many-to-one name="nextMessage" cascade="all"
			column="NEXT_MESSAGE_ID" foreign-key="FK_NEXT_MESSAGE" />
	</class>
</hibernate-mapping>

 ant-1.6.5.jar
    ant-antlr-1.6.5.jar
    ant-junit-1.6.5.jar
    ant-launcher-1.6.5.jar
    ant-swing-1.6.5.jar
    antlr-2.7.6.jar
    asm-attrs.jar
    asm.jar
    c3p0-0.9.1.jar
    cglib-2.1.3.jar
    checkstyle-all.jar
    cleanimports.jar
    commons-collections-2.1.1.jar
    commons-logging-1.0.4.jar
    concurrent-1.3.2.jar
    dom4j-1.6.1.jar
    ehcache-1.2.3.jar
    hibernate3.jar
    jaas.jar
    jacc-1_0-fr.jar
    javassist.jar
    jaxen-1.1-beta-7.jar
    jboss-cache.jar
    jboss-common.jar
    jboss-jmx.jar
    jboss-system.jar
    jgroups-2.2.8.jar
    jta.jar
    junit-3.8.1.jar
    log4j-1.2.11.jar
    ojdbc-14.jar
    oscache-2.1.jar
    proxool-0.8.3.jar
    swarmcache-1.0rc2.jar
    syndiag2.jar
    versioncheck.jar
    xerces-2.6.2.jar
    xml-apis.jar