i am new to iberate, i just make an simple test program, and compile is good, but when execute, the error is at following, the project tree is also include

please help, thanks in advance


alpha:/var/apache-tomcat-7.0.34/webapps/ecommerce/WEB-INF/classes # java Test

Dec 14, 2012 2:56:28 PM org.hibernate.cfg.Configuration getConfigurationInputStream
INFO: HHH000040: Configuration resource: /hibernate.cfg.xml
Exception in thread "main" org.hibernate.MappingException: invalid configuration
at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:2018)
at org.hibernate.cfg.Configuration.configure(Configuration.java:1935)
at org.hibernate.cfg.Configuration.configure(Configuration.java:1914)
at Test.main(Test.java:12)
Caused by: org.xml.sax.SAXParseException: Document is invalid: no grammar found.
at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException(ErrorHandlerWrapper.java:195)


alpha:/var/apache-tomcat-7.0.34/webapps/ecommerce/WEB-INF # ls -R
.:
classes compile.sh lib src web.xml

./classes:
Student.hbm.xml Test.class example hibernate.cfg.xml struts.xml

./classes/example:
Student.class

./lib:
commons-fileupload-1.2.2.jar freemarker-2.3.19.jar ognl-3.0.5.jar
commons-io-2.0.1.jar hibernate-commons-annotations-4.0.1.Final.jar spring-test-3.0.5.RELEASE.jar
commons-lang-2.4.jar hibernate-core-4.1.8.Final.jar struts2-core-2.3.7.jar
commons-lang3-3.1.jar javassist-3.11.0.GA.jar xwork-core-2.3.7.jar
commons-logging-1.1.1.jar jboss-logging-3.1.0.GA.jar
dom4j-1.6.1.jar jboss-transaction-api_1.1_spec-1.0.0.Final.jar

./src:
example

./src/example:
Student.java Test.java

*********************************************
alpha:/var/apache-tomcat-7.0.34/webapps/ecommerce/WEB-INF/classes # cat Student.hbm.xml

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">

<hibernate-mapping>
<class name="example.Student" table="student">
<id name="studentId" column="student_id">
<generator class="increment" />
</id>
<property name="firstName" type="string" column="first_name" />
<property name="lastName" type="string" column="last_name" />
<property name="address" type="string" column="address" />
</class>
</hibernate-mapping>


alpha:/var/apache-tomcat-7.0.34/webapps/ecommerce/WEB-INF/classes # cat hibernate.cfg.xml
<hibernate-configuration>

<session-factory>

<property name="connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="connection.url">jdbc:mysql://10.1.1.37/mytest</property>
<property name="connection.username">test</property>
<property name="connection.password">password</property>

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

<property name="show_sql">true</property>


<mapping resource="Student.hbm.xml"/>

</session-factory>

</hibernate-configuration>


alpha:/var/apache-tomcat-7.0.34/webapps/ecommerce/WEB-INF/src/example # cat Test.java

import org.hibernate.Session;
import example.Student;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;

public class Test {
public static void main(String[] args) {
//Session session = HibernateUtil.getSessionFactory().getCurrentSession();

Configuration conf=new Configuration().configure();
SessionFactory sf=conf.buildSessionFactory();
Session session=sf.openSession();
session.beginTransaction();
Student s = new Student("firstname", "lastname", "address");
session.save(s);
session.getTransaction().commit();
}
}


mysql> desc student;
+------------+---------------------+------+-----+---------+----------------+
| Field | Type | Null | Key | Default | Extra |
+------------+---------------------+------+-----+---------+----------------+
| student_id | bigint(10) unsigned | NO | PRI | NULL | auto_increment |
| first_name | varchar(50) | YES | | NULL | |
| last_name | varchar(50) | YES | | NULL | |
| address | varchar(50) | YES | | NULL | |
+------------+---------------------+------+-----+---------+----------------+
4 rows in set (0.00 sec)