public class User {
    private int id;
    private String username;
    private String password;
    private String cellphone;
    //各种setter和getter
}

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC 
    "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
    "http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">
<!-- 
  This mapping demonstrates content-based discrimination for the
  table-per-hierarchy mapping strategy, using a formula
  discriminator.
-->
<hibernate-mapping 
    package="org.hibernate.test.array">
    <class name="A" lazy="true" table="aaa">
        <id name="id">
            <generator class="native"/>
        </id>
        <array name="bs" cascade="all" fetch="join">
            <key column="a_id"/>
            <list-index column="idx"/>
            <one-to-many class="B"/>
        </array>
    </class>
    <class name="B" lazy="true" table="bbb">
        <id name="id">
            <generator class="native"/>
        </id>
    </class>
</hibernate-mapping>

<!--在domain包下-->
<hibernate-mapping package="zhongfucheng.domain">
    <!--类名为User，表名也为User-->
    <class name="User"  table="user">
        <!--主键映射，属性名为id，列名也为id-->
        <id name="id" column="id">
            <!--根据底层数据库主键自动增长-->
            <generator class="native"/>
        </id>
        <!--非主键映射，属性和列名一一对应-->
        <property name="username" column="username"/>
        <property name="cellphone" column="cellphone"/>
        <property name="password" column="password"/>
    </class>
</hibernate-mapping>

<?xml version='1.0' encoding='utf-8'?>
<!DOCTYPE hibernate-configuration PUBLIC
        "-//Hibernate/Hibernate Configuration DTD//EN"
        "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
    <session-factory>
        <property name="connection.url."/>
        <property name="connection.driver_class"/>
        <property name="connection.username"/>
        <property name="connection.password"/>
        <!-- DB schema will be updated if needed -->
        <!-- <property name="hbm2ddl.auto">update</property> -->
    </session-factory>
</hibernate-configuration>

<hibernate-configuration>
    <!-- 通常，一个session-factory节点代表一个数据库 -->
    <session-factory>
        <!-- 1. 数据库连接配置 -->
        <property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
        <property name="hibernate.connection.url">jdbc:mysql:///zhongfucheng</property>
        <property name="hibernate.connection.username">root</property>
        <property name="hibernate.connection.password">root</property>
        <!--
            数据库方法配置， hibernate在运行的时候，会根据不同的方言生成符合当前数据库语法的sql
         -->
        <property name="hibernate.dialect">org.hibernate.dialect.MySQL5Dialect</property>
        <!-- 2. 其他相关配置 -->
        <!-- 2.1 显示hibernate在运行时候执行的sql语句 -->
        <property name="hibernate.show_sql">true</property>
        <!-- 2.2 格式化sql -->
        <property name="hibernate.format_sql">true</property>
        <!-- 2.3 自动建表  -->
        <property name="hibernate.hbm2ddl.auto">create</property>
        <!--3. 加载所有映射-->
        <mapping resource="zhongfucheng/domain/User.hbm.xml"/>
    </session-factory>
</hibernate-configuration>

package zhongfucheng.domain;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.hibernate.cfg.Configuration;
import org.hibernate.classic.Session;
/**
 * Created by ozc on 2017/5/6.
 */
public class App {
    public static void main(String[] args) {
        //创建对象
        User user = new User();
        user.setPassword("123");
        user.setCellphone("122222");
        user.setUsername("nihao");
        //获取加载配置管理类
        Configuration configuration = new Configuration();
        //不给参数就默认加载hibernate.cfg.xml文件，
        configuration.configure();
        //创建Session工厂对象
        SessionFactory factory = configuration.buildSessionFactory();
        //得到Session对象
        Session session = factory.openSession();
        //使用Hibernate操作数据库，都要开启事务,得到事务对象
        Transaction transaction = session.getTransaction();
        //开启事务
        transaction.begin();
        //把对象添加到数据库中
        session.save(user);
        //提交事务
        transaction.commit();
        //关闭Session
        session.close();
    }
}

Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Table 'zhongfucheng.user' does

public static void main(String[] args) {
        //创建对象
        User user = new User();
        user.setPassword("123");
        user.setCellphone("122222");
        user.setUsername("nihao");
        //获取加载配置管理类
        Configuration configuration = new Configuration();
        //不给参数就默认加载hibernate.cfg.xml文件，
        configuration.configure();
        //创建Session工厂对象
        SessionFactory factory = configuration.buildSessionFactory();
        //得到Session对象
        Session session = factory.openSession();
        //使用Hibernate操作数据库，都要开启事务,得到事务对象
        Transaction transaction = session.getTransaction();
        //开启事务
        transaction.begin();
        //把对象添加到数据库中
        session.save(user);
        //提交事务
        transaction.commit();
        //关闭Session
        session.close();
    }