Hibernate开发细节

<hibernate-mapping package="com.xunpoit.entity">
    <!-- 实体类名 和 表名 -->
    <class name="User" table="t_user">
        <!--类中的字段名 和表中的字段名 -->
        <id name="id" column=”id”>
            <!--主键如何产生,native是主键产生器的一种,自增长 -->
            <generator class="native" />
        </id>
        <property name="name" type="string" length="255" column="name"
            not-null="true" />
        <property name="password" type="string" length="20" column="password"
            not-null="true" />
    </class>
</hibernate-mapping>

<!DOCTYPE hibernate-configuration PUBLIC
    "-//Hibernate/Hibernate Configuration DTD 3.0//EN"
    "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">

<hibernate-configuration>
    <session-factory>
        <property name="show_sql">true</property>
        <property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
        <property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
        <property name="hibernate.connection.url">jdbc:mysql://localhost:3306/testhibernate</property>
        <property name="hibernate.connection.username">root</property>
        <property name="hibernate.connection.password">962297fabaoyi</property>
        <mapping resource="com/xunpoit/entity/User.hbm.xml"/>
    </session-factory>
</hibernate-configuration>

package com.xunpoit.manager;

import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.hibernate.cfg.Configuration;

import com.xunpoit.entity.User;

public class UserManager {
    public static void main(String[] args) {
        
        //配置文件hibernate.cfg.xml如果改成了hibernate.xml那么configure()方法里需要传入文件名
        Configuration config = new Configuration().configure("hibernate.xml");
        
        SessionFactory factory = config.buildSessionFactory();
        Session session = factory.openSession();
        
        User user = new User();
        user.setName("张三");
        user.setPassword("123456");
        
        Transaction tran = session.beginTransaction();
        session.save(user);
        tran.commit();
        session.close();
    }
}