初级篇：最简单的Hibernate入门简介

c:\workspace\My1stHibernate\ 
c:\workspace\My1stHibernate\src
c:\workspace\My1stHibernate\classes 
c:\workspace\My1stHibernate\lib
c:\workspace\My1stHibernate\lib\hibernate
c:\workspace\My1stHibernate\lib\db

CREATE TABLE CUSTOMER 
( 
CID INTEGER NOT NULL PRIMARY KEY,  
USERNAME VARCHAR(12) NOT NULL,  
PASSWORD VARCHAR(12) );
编写Java文件 public class Customer
{ 
private int id; 
private String username;
private String password;
public int getId() 
{       
return id;
}    
public String getPassword()
{
return password; 
}
public String getUsername()
{  
return username;
} 
public void setId(int id)
{
this.id = id;  
}    
public void setPassword(String password)
{ 
this.password = password; 
}
public void setUsername(String username)
{         this.username = username;
}
}

编写Test类 import net.sf.hibernate.*; 
import net.sf.hibernate.cfg.*;
public class Test
{    
public static void main(String[] args)
{   
try 
{ 
SessionFactory sf = 
new Configuration()
.configure().buildSessionFactory(); 
Session session = sf.openSession();
Transaction tx = session.beginTransaction();
for (int i = 0; i < 200; i++)
{  
Customer customer = new Customer();
customer.setUsername("customer" + i);
customer.setPassword("customer");
session.save(customer);
}   
tx.commit(); 
session.close(); 
}
catch (HibernateException e) 
{ 
e.printStackTrace(); 
} 
}
}

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC 
"-//Hibernate/Hibernate Mapping DTD//EN"
"http://hibernate.sourceforge.net
/hibernate-mapping-2.0.dtd"> 
<hibernate-mapping>  
<class name="Customer" table="CUSTOMER">
<id name="id" column="CID">
<generator class="increment" /> 
</id>      
<property name="username" 
column="USERNAME" />
<property name="password" 
column="PASSWORD" /> 
</class> </hibernate-mapping>

<?xml version="1.0" ?>
<project name="My1stHibernate" 
default="build" basedir="."> 
<property name="base.dir" value="." /> 
<property name="src.dir" value="src" />
<property name="lib.dir" value="lib" />
<property name="build.dir" 
value="classes" />  
<path id="myclasspath"> 
<fileset dir="${lib.dir}"> 
<include name="**/*.jar" />
</fileset>  
<pathelement location="${build.dir}" /> 
</path> 
<target name="init">     
<mkdir dir="${build.dir}" />  
</target>       
<target name="build" depends="init"
description="compile the source files">
<javac classpathref="myclasspath" 
srcdir="${src.dir}" destdir="${build.dir}" />  
<copy todir="${build.dir}" > 
<fileset dir="${src.dir}" >
<exclude name="**/*.java"/> 
</fileset> 
</copy>    
</target>   
<target name="run" depends="build">  
<java classpathref="myclasspath"
classname="Test" fork="true" />
</target>   
<target name="clean"> 
<delete includeEmptyDirs="true">
<fileset dir="${build.dir}" />
</delete>    
</target>
</project>

<?xml version="1.0" 
encoding="utf-8" ?> 
<!DOCTYPE hibernate-configuration 
PUBLIC "-//Hibernate/Hibernate 
Configuration DTD//EN"   
"http://hibernate.sourceforge.net
/hibernate-configuration-2.0.dtd">
<hibernate-configuration>     
<session-factory 
name="java:/hibernate/HibernateFactory"> 
<property name="show_sql">true</property> 
<property name="connection.driver_class">
oracle.jdbc.driver.OracleDriver 
<!-- 这里是Oracle 9i的JDBC driver class名 -->
</property> 
<property name="connection.url">
jdbc:oracle:oci8:@hibernate_test
<!--这里是Oracle的hibernate_test数据库URL -->
</property>  
<property name="connection.username">    
你的数据库用户名 
</property> 
<property name="connection.password">
你的数据库密码  
</property>
<property name="dialect"> 
net.sf.hibernate.dialect.Oracle9Dialect 
<!-- 这里是Oracle 9i的Dialect -->  
</property>  
<mapping resource="Customer.hbm.xml" /> 
<!-- 指定Customer的映射文件 --> 
</session-factory> 
</hibernate-configuration>

[java] log4j:
WARN No appenders 
could be found for logger
(net.sf.hibernate.cfg.Environment).
[java] log4j:WARN Please initialize 
the log4j system properly.
[java] Hibernate: insert into
CUSTOMER (USERNAME, PASSWORD, CID)
values (?, ?, ?) BUILD SUCCESSFUL