hibernate环境搭建（Hello world 配置文件版）

1.下载hibernate jar包：hibernate-release-4.3.5.Final，导入必要的jar包，路径为：hibernate-release-4.3.5.Final\lib\required。

包含的jar包有10个。

2.建立新的java项目。

3.学习自己建立User Library：

(a)项目右键——build path——configure build path——add library.

(b)选择User-library,在其中新建library，命名为hibernate。

(c)在library中加入hibernate所需要的jar包（路径为：hibernate-release-4.3.5.Final\lib\required），hello world就够了，其他的还要加。

4.引入数据库的jdbc驱动。我用的mysql：mysql-connector-java-5.1.7-bin.jar

(a)创建数据库：create database hibernate;

(b)切换数据库：use hibernate;

(c)创建Student表：create table Student(id int primary key, name varchar(20),age int);

5.建立hibernate的配置文件hibernate.cfg.xml，强烈建议在hibernate-release-4.3.5.Final\documentation\manual\en-US\html_single路径下的帮助文档中copy。

地点：1.1.4.
Hibernate configuration。 内容修改后：

[html] view
plain copy







<?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">com.mysql.jdbc.Driver</property>

<property name="connection.url">jdbc:mysql://localhost/hibernate</property>

<property name="connection.username">XXX</property>

<property name="connection.password">XXXX</property>

<!-- JDBC connection pool (use the built-in) -->

<!--

<property name="connection.pool_size">1</property>

-->

<!-- SQL dialect -->

<property name="dialect">org.hibernate.dialect.MySQLDialect</property>

<!-- Enable Hibernate's automatic session context management -->

<property name="current_session_context_class">thread</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/huxing/hibernate/model/Student.hbm.xml"/>

</session-factory>

</hibernate-configuration>

建立Student类：

[java] view
plain copy







public class Student {

private int id;

private String name;

private int age;

public int getId() {

return id;

}

public void setId(int id) {

this.id = id;

}

public String getName() {

return name;

}

public void setName(String name) {

this.name = name;

}

public int getAge() {

return age;

}

public void setAge(int age) {

this.age = age;

}

}

建立Student的映射文件：Student.hbm.xml

[html] view
plain copy







<?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.huxing.hibernate.model">

<class name="Student" table="student">

<id name="id" column="id">

</id>

<property name="name" type="string" column="name"/>

<property name="age" type="int" column="age"/>

</class>

</hibernate-mapping>

最后测试：

[html] view
plain copy







import org.hibernate.Session;

import org.hibernate.SessionFactory;

import org.hibernate.cfg.Configuration;

import com.huxing.hibernate.model.Student;

public class StudentTest {

public static void main(String[] args) {

Student a = new Student();

a.setId(123);

a.setAge(32);

a.setName("hello hibernate!");

Configuration cfg = new Configuration();

SessionFactory cf = cfg.configure().buildSessionFactory();

Session session = cf.openSession();

session.beginTransaction();

session.save(a);

session.getTransaction().commit();

session.close();

cf.close();

}

}