初次整合hibernate和spring，不能自动生成表

Question

以下是主要代码：
Users类：
package com.merlin.beans;

import org.hibernate.SessionFactory;

public class Users {

private String id;

private String name;
private String password;

public String getName() {
    return name;
}
public void setName(String name) {
    this.name = name;
}
public String getPassword() {
    return password;
}
public void setPassword(String password) {
    this.password = password;
}   
public String getId() {
    return id;
}
public void setId(String id) {
    this.id = id;
}

}
Users.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">

beans.xml代码：
<?xml version="1.0" encoding="utf-8"?>
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd"
default-autowire="no"
>

<!-- 连接池启动时的初始值 -->

<!-- 连接池的最大值 -->

<!-- 最大空闲值.当经过一个高峰时间后，连接池可以慢慢将已经用不到的连接慢慢释放一部分，一直减少到maxIdle为止 -->

<!-- 最小空闲值.当空闲的连接数少于阀值时，连接池就会预申请去一些连接，以免洪峰来时来不及申请 -->

com/merlin/beans/Users.hbm.xml




hibernate.dialect=org.hibernate.dialect.OracleDialect
hibernate.hbm2ddl.auto=update
hibernate.show_sql=true
hibernate.format_sql=false

测试类代码：
package com.merlin.test;

import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import com.merlin.beans.Users;

public class testSpring {

/**
 * @param args
 */
public static void main(String[] args) {
    // TODO Auto-generated method stub
     ApplicationContext ac=new ClassPathXmlApplicationContext("beans.xml");
     Users u=(Users) ac.getBean("users");
     System.out.println("name="+u.getName());
     SessionFactory sf=(SessionFactory) ac.getBean("sessionFactory");

    Users uu=new Users();
    uu.setId("1");
    uu.setName("aaa");
    uu.setPassword("111");
    sf.openSession().save(uu);
    System.out.println("uu:"+uu.getName());
     System.out.println("session="+sf.getStatistics());

}

}

Answer 1

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