测试代码：

1.package com.hb3.pack_02;2.3.import org.hibernate.Session;4.import org.hibernate.SessionFactory;5.import org.hibernate.Transaction;6.import org.hibernate.cfg.Configuration;7.
8.import com.hb3.pack_02.model.Room;9.import com.hb3.pack_02.model.User;10.
11.public class BusinessService {12.
13.    public static void main(String[] args) {14.15.        Configuration config = new Configuration().configure();16.        SessionFactory sessionFactory = config.buildSessionFactory();17.        Session session = sessionFactory.openSession();18.
19.        User user1 = new User();20.        user1.setName("shenbin");21.        Room room1 = new Room();22.        room1.setAddress("NTU-M8-419");23.        user1.setRoom(room1);24.25.        User user2 = new User();26.        user2.setName("chanyan");27.        Room room2 = new Room();28.        room2.setAddress("NTU-M8-418");29.        user2.setRoom(room2);30.31.        Transaction tx = session.beginTransaction();32.        session.save(user1);33.        session.save(user2);34.        tx.commit();35.36.        Room room = (Room) session.load(Room.class, new Integer(1));37.        System.out.println(room.getUser().getName());38.39.        session.close();40.        sessionFactory.close();41.    }42.}

hibernate3学习笔记(十九)｜关系映射：一对一(4)

A.主键关联

DDL：

1.CREATE TABLE user (2.    id INT(11) NOT NULL auto_increment PRIMARY KEY,3.    name VARCHAR(100) NOT NULL default ''''4.);5.6.CREATE TABLE room (7.    id INT(11) NOT NULL auto_increment PRIMARY KEY,8.    address VARCHAR(100) NOT NULL default ''''9.);

Room和User类同上。

Room.hbm.xml

1.<?xml version="1.0" encoding="UTF-8"?>2.
3.<!DOCTYPE hibernate-mapping PUBLIC4.    "-//Hibernate/Hibernate Mapping DTD 3.0//EN"5.    "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
6.7.<hibernate-mapping>8.9.    <class name="com.hb3.pack_18.model.Room" table="room">
10.11.        <id name="id" column="id">12.            <generator class="foreign">13.                <param name="property">user</param>
14.            </generator>
15.        </id>

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