Hibernate入门

<?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>   
        <property name="connection.driver_class">oracle.jdbc.driver.OracleDriver</property>   
        <property name="connection.url">jdbc:oracle:thin:@localhost:1521:orcl</property>   
        <property name="connection.username">test</property>   
        <property name="connection.password">test</property>   
  
        <property name="connection.pool_size">2</property>   
        <property name="dialect">org.hibernate.dialect.OracleDialect</property>   
        <property name="show_sql">true</property>   
  
        <mapping resource="cn/javass/h4/hello/UserModel.hbm.xml"/>   
    </session-factory>   
</hibernate-configuration> 

<?xml version="1.0" encoding="UTF-8"?>   
<!DOCTYPE hibernate-mapping PUBLIC   
        ‘-//Hibernate/Hibernate Mapping DTD 3.0//EN‘  
        ‘http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd‘>   
<hibernate-mapping>   
    <class name="cn.javass.h4.hello.UserModel" table="tbl_user">   
        <id name="uuid">   
            <generator class="assigned"/>   
        </id>   
        <property name=“userId”></property>   
        <property name=“name”></property>   
        <property name="age"></property>   
    </class>   
</hibernate-mapping> 

package cn.javass.h4.hello;   
  
import org.hibernate.Session;   
import org.hibernate.SessionFactory;   
import org.hibernate.Transaction;   
import org.hibernate.cfg.Configuration;   
  
public class Client {   
    public static void main(String[] args) {   
        SessionFactory sf = new Configuration().configure().buildSessionFactory();   
        Session s = null;   
        Transaction t = null;   
  
        try{   
            //准备数据   
            UserModel um = new UserModel();   
            um.setUuid("1");   
            um.setUserId("id1");   
            um.setName("name1");   
            um.setAge(1);   
            s = sf.openSession();   
            t = s.beginTransaction();   
            s.save(um);   
            t.commit();   
       }catch(Exception err){   
            t.rollback();   
            err.printStackTrace();   
      }finally{   
            s.close();   
      }   
    }   
}