Hibernate基本框架创建

Hibernate基本框架创建步骤

1、在java项目中创建lib文件夹，放入所有需要的jar包，在buildPath一下。

所有的jar包如下:(10个基本jar包和一个数据库的jar包)

2、在src根文件夹下创建hibernate.cfg.xml文件，进行配置（oracle数据库配置）

<?xml version='1.0' encoding='utf-8'?><!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>        <!-- Database connection settings -->        <property name="connection.driver_class">oracle.jdbc.driver.OracleDriver</property>        <property name="connection.url">jdbc:oracle:thin:@172.16.130.35:1521:orcl</property>        <property name="connection.username">uuid</property>        <property name="connection.password">uuid</property>                <!-- JDBC connection pool (use the built-in) -->        <property name="connection.pool_size">1</property>        <!-- SQL dialect -->        <property name="dialect">org.hibernate.dialect.Oracle10gDialect</property>        <!-- Disable the second-level cache  -->        <property name="cache.provider_class">org.hibernate.cache.internal.NoCacheProvider</property>        <!-- Echo all executed SQL to stdout -->        <property name="show_sql">true</property>        <!-- Drop and re-create the database schema on startup -->        <property name="hbm2ddl.auto">update</property>        <mapping resource="com/iflytek/domain/Student.hbm.xml"/>    </session-factory></hibernate-configuration>

3、创建基本的实体类如Student.java包含setter和getter的方法

package com.iflytek.domain;public class Student {private String id;private String name;private int age;public String getName() {return name;}public String getId() {return id;}public void setId(String id) {this.id = id;}public void setName(String name) {this.name = name;}public int getAge() {return age;}public void setAge(int age) {this.age = age;}}

4、创建Student.hbm.xml文件

<?xml version="1.0"?><!DOCTYPE hibernate-mapping PUBLIC        "-//Hibernate/Hibernate Mapping DTD 3.0//EN"        "http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd"><hibernate-mapping package="com.iflytek.domain">    <class name="Student" table="tt_student">        <id name="id" column="id">            <generator class="uuid"/>        </id>        <property name="name" column="name"/>        <property name="age" column="age"/>    </class></hibernate-mapping>

5、封装util对象

package com.iflytek.util;import org.hibernate.HibernateException;import org.hibernate.Session;import org.hibernate.SessionFactory;import org.hibernate.boot.MetadataSources;import org.hibernate.boot.registry.StandardServiceRegistry;import org.hibernate.boot.registry.StandardServiceRegistryBuilder;import org.hibernate.cfg.Configuration;public class HibernateUtil {private static final ThreadLocal<Session> threadLocal = new ThreadLocal<Session>();//ThreadLocal对象    private static SessionFactory sessionFactory = null;//SessionFactory对象    //静态块static {final StandardServiceRegistry registry = new StandardServiceRegistryBuilder().configure() // configures settings from hibernate.cfg.xml.build();try {sessionFactory = new MetadataSources( registry ).buildMetadata().buildSessionFactory();}catch (Exception e) {// The registry would be destroyed by the SessionFactory, but we had trouble building the SessionFactory// so destroy it manually.StandardServiceRegistryBuilder.destroy( registry );}    }/**     *获取Session     *  @return Session     *  @throws HibernateException     */    public static Session getSession() throws HibernateException {        Session session = (Session) threadLocal.get();if (session == null || !session.isOpen()) {if (sessionFactory == null) {rebuildSessionFactory();}session = (sessionFactory != null) ? sessionFactory.openSession(): null;threadLocal.set(session);}        return session;    }/**     * 重建会话工厂     */public static void rebuildSessionFactory() {try {// 加载Hibernate配置文件Configuration cfg = new Configuration().configure();sessionFactory = cfg.buildSessionFactory();} catch (Exception e) {System.err.println("创建会话工厂失败");e.printStackTrace();}}/** * 获取SessionFactory对象 * @return SessionFactory对象 */public static SessionFactory getSessionFactory() {return sessionFactory;}/**      *关闭Session     *  @throws HibernateException     */    public static void closeSession() throws HibernateException {        Session session = (Session) threadLocal.get();        threadLocal.set(null);        if (session != null) {            session.close();//关闭Session        }                if ( sessionFactory != null ) {sessionFactory.close();}            }}

6、测试类进行测试

package com.iflytek.test;import static org.junit.Assert.*;import org.hibernate.Session;import org.hibernate.SessionFactory;import org.hibernate.Transaction;import org.hibernate.boot.MetadataSources;import org.hibernate.boot.registry.StandardServiceRegistry;import org.hibernate.boot.registry.StandardServiceRegistryBuilder;import org.junit.After;import org.junit.Before;import com.iflytek.domain.Student;import com.iflytek.util.HibernateUtil;public class Test {//private SessionFactory sessionFactory;@Beforepublic void setUp() throws Exception {/*final StandardServiceRegistry registry = new StandardServiceRegistryBuilder().configure() // configures settings from hibernate.cfg.xml.build();try {sessionFactory = new MetadataSources( registry ).buildMetadata().buildSessionFactory();}catch (Exception e) {// The registry would be destroyed by the SessionFactory, but we had trouble building the SessionFactory// so destroy it manually.StandardServiceRegistryBuilder.destroy( registry );}*/}@Afterpublic void tearDown() throws Exception {/*if ( sessionFactory != null ) {sessionFactory.close();}*/}@org.junit.Testpublic void test() {Session session = HibernateUtil.getSession();Transaction tx = session.beginTransaction();Student stu=new Student();stu.setName("张三");stu.setAge(11);session.save(stu);tx.commit();session.close();}}

完毕！！！！！