一个最简单的Hibernate sample；
1. 建表
CREATE DATABASE test;
USE test;
DROP TABLE IF EXISTS cat;
CREATE TABLE `cat` (
`CatID` varchar(32) NOT NULL default '0',
`name` varchar(32) default NULL,
PRIMARY KEY (`CatID`)
) TYPE=MyISAM;
INSERT INTO cat VALUES ('01001','Tomy');
INSERT INTO cat VALUES ('01002','Jacky');
INSERT INTO cat VALUES ('01003','Sunny');
INSERT INTO cat VALUES ('01004','Cherry');
INSERT INTO cat VALUES ('01005','Rubbish');
2. 创建配置文件
1) Cat.hbm.xml
<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 2.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-2.0.dtd" >
<hibernate-mapping>
<class name="Cats" table="cat">
<id name="catId" type="java.lang.String" column="CatID">
<generator class="assigned" />
</id>
<property name="name" type="java.lang.String" column="name" length="32" />
</class>
</hibernate-mapping>
该记录只有两个field，CatID和name，CatID是主键。
2) hibernate.cfg.xml
<hibernate-configuration>
<session-factory>
<property name="hibernate.connection.driver_class">org.gjt.mm.mysql.Driver</property>
<property name="hibernate.connection.url">jdbc:mysql://localhost:3306/test</property>
<property name="hibernate.connection.username">******</property>
<property name="hibernate.connection.password">******</property>
<property name="dialect">net.sf.hibernate.dialect.MySQLDialect</property>
<property name="show_sql">false</property>
<!-- Mapping files -->
<mapping resource="Cat.hbm.xml"/>
</session-factory>
</hibernate-configuration>
3. 代码
1) Cats.java
对象关系映射Class
2) HibernateUtil.java
封装了Hibernate的一些操作的class，按照Hibernate Ref上面的写的。
3) Test.java
一些简单的数据操作。
4. build.xml文件。
5. 目录结构
.\Hibernate\build.xml
.\Hibernate\src
.\Hibernate\lib
.\Hibernate\classes
6. 运行ant，ant run
[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] Find Cat :01004 Cherry
[java] --------------- Query All --------------
[java] Find Cat :01004 Cherry
[java] Find Cat :01001 Tomy
[java] Find Cat :01002 Jacky
[java] Find Cat :01003 Sunny
[java] Find Cat :01004 Cherry
[java] Find Cat :01005 Rubbish
7. source code