<hibernate-mapping package="com.user">
<class
name="User"
table="user"
>
<id
name="Id"
type="integer"
column="id"
>
<generator class="native"/>
</id>
<property
name="Name"
column="name"
type="string"
not-null="true"
length="20"
/>
<property
name="Password"
column="password"
type="string"
not-null="true"
length="20"
/>
<component name="Contact" class="Contact">
<property
name="Email"
column="email"
type="string"
not-null="false"
length="50"
/>
<property
name="Address"
column="address"
type="string"
not-null="false"
length="100"
/>
</component>
</class>
</hibernate-mapping>
3.測(cè)試
添加一個(gè)測(cè)試類(lèi)：HibernateTest
package com.user;
import java.util.List;
import java.util.ListIterator;
import org.hibernate.*;
import org.hibernate.cfg.*;
public class HibernateTest {
public static void main(String[] args) throws HibernateException {
SessionFactory sessionFactory = new Configuration().configure().buildSessionFactory();
//
//testInsert(sessionFactory);
//
testQuery(sessionFactory);
sessionFactory.close();
}
public static void testInsert( SessionFactory sessionFactory )throws HibernateException {
Session session = sessionFactory.openSession();
Transaction tx= session.beginTransaction();
User user = new User();
Contact contact=new Contact();
contact.setEmail("email");
contact.setAddress("address");
user.setName("caterpillar");
user.setPassword("password");
user.setContact(contact);
session.save(user);
tx.commit();
session.close();
System.out.println("OK！");
}
public static void testQuery( SessionFactory sessionFactory )throws HibernateException {
Session session = sessionFactory.openSession();
Transaction tx= session.beginTransaction();
User user = new User();
Contact contact=new Contact();
Query query=session.createQuery("from User as user");
//query.setCharacter(1, 'M');
List names =query.list();
for(ListIterator it=names.listIterator();it.hasNext();){
user= (User)it.next();
System.out.println("Id: " + user.getId());
System.out.println("name: " + user.getName());
System.out.println("password: " + user.getPassword());
if(user.getContact()!=null){
if(user.getContact().getEmail()!=null){
System.out.println("Email: " + user.getContact().getEmail());
}
if(user.getContact().getAddress()!=null){
System.out.println("Address: " + user.getContact().getAddress());
}
}
}
tx.commit();
session.close();
}
}