hibernate映射问题??
求大神解决!!
错误:
Exception in thread "main" org.hibernate.MappingException: Unknown entity: com.hibernate.model.Student

Student.hbm.xml:

<?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="com.hibernate.model">



	<class name="com.hibernate.model.Student" table="student">

		<id name="id" column="s_id" type="integer">

			<generator class="native" />

		</id>

		<property name="name" column="s_name" type="string"></property>

		<property name="sex" column="s_sex" type="string"></property>

		<property name="age" column="s_age" type="integer"></property>

		<property name="time" column="s_time" type="date"></property>



	</class>

</hibernate-mapping>

Student.java:

package com.hibernate.model;



import java.util.Date;



public class Student {

	private int id;

	private String name;

	private String sex;

	private int age;

	private Date time;



	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 String getSex() {

		return sex;

	}



	public void setSex(String sex) {

		this.sex = sex;

	}



	public int getAge() {

		return age;

	}



	public void setAge(int age) {

		this.age = age;

	}



	public Date getTime() {

		return time;

	}



	public void setTime(Date time) {

		this.time = time;

	}

}