急！初学Hibernate，弄了2天，找不到错误...

package cn.itcast.helloWorld;



public class User {

	private int id;

	private String name;

	

	public User(){}

	

	public User(int id,String name){

		this.id=id;

		this.name=name;

	}

	

	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;

	}



}

测试类：

package cn.itcast.helloWorld;



import org.hibernate.Session;

import org.hibernate.SessionFactory;

import org.hibernate.Transaction;

import org.hibernate.cfg.Configuration;



public class App {

	public static void main(String args[]) {

		User user=new User(1,"张三");

		Configuration cfg=new Configuration();

		cfg.configure("hibernate.cfg.xml");

		SessionFactory sessionFactory=cfg.buildSessionFactory();

		Session session=sessionFactory.openSession();

		Transaction ts=session.beginTransaction();

		session.save(user);

		ts.commit();

		session.close();

	}

	



}

hebirnate.cfg.xml 配置：
<?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>
<!-- 数据库连接配置 -->
        <property name="connection.driver_class">com.microsoft.sqlserver.jdbc.SQLServerDriver</property>
        <property name="connection.url">jdbc:sqlserver://localhost:1433;DatabaseName=Test</property>
        <property name="connection.username">sa</property>
        <property name="connection.password">5782706007</property>
        <property name="dialect">org.hibernate.dialect.SQLServerDialect</property>
        <property name="show_sql">true</property>

        <mapping resource="cn/itcast/helloWorld/User.hbm.xml"/>

    </session-factory>

</hibernate-configuration>

User.hbm.xml 配置：
<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE hibernate-mapping PUBLIC
        '-//Hibernate/Hibernate Mapping DTD 3.0//EN'
        'http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd'>

<hibernate-mapping package="cn.itcast.helloWorld" >

    <class name="User" table="user">

        <id name="id" type="int" column="id">
            <generator clas