刚学hibernate运行第一个程序出错了
我刚学hibernate运行第一个程序出错了，我用的是myeclipse6.5，配置文件是手动添加的。我刚发了个一样的贴没发好。CSDN玩的不熟，抱歉！

student类



package com.gx.hibernate.model;

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;
}


}


hibernate.cfg.xml代码


<?xml version='1.0' encoding='utf-8'?>
<!DOCTYPE hibernate-configuration PUBLIC
  "-//Hibernate/Hibernate Configuration DTD 3.0//EN"
  "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">

<hibernate-configuration>

  <session-factory>

  <!-- Database connection settings -->
  <property name="connection.driver_class">org.gjt.mm.mysql.Driver</property>
  <property name="connection.url">jdbc:mysql://localhost:3306/hibernate</property>
  <property name="connection.username">root</property>
  <property name="connection.password">gaoxiang</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.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/gx/hibernate/model/Student.hbm.xml"/>

  </session-factory>

</hibernate-configuration>


Student.hbm.xml代码


<?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 package="com.gx.hibernate.model">

<class name="Student">

<id name="id"></id>
<property name="name"></property>
<property name="age"></property>

</class>
   
</hibernate-mapping>



测试代码


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

import com.gx.hibernate.model.Student;


public class StudentTest {
public static void main(String[] args) throws Exception{
Student s = new Student();
s.setId(1);
s.setName("s1");
s.setAge(1);

Configuration cfg = new Configuration();
SessionFactory sf = cfg.configure().buildSessionFactory();
Sessi