people表：{peopleId,name}
address表：{addressId,peopleId,addressName,codeNumber}
package com.gpdi.test;
import org.hibernate.Session;
import com.gpdi.orm.object.Address;
import com.gpdi.orm.object.People;
public class Testp {
/**
* @param args
*/
public static void main(String[] args)
{
People people = new People();
people.setName("linda");
Address address = new Address();
address.setAddressName("yunnan");
address.setCodeNumber("564123");
address.setPeople(people);
people.getAddresses().add(address);
Session session = HibernateSessionFactory.currentSession();
session.beginTransaction();
session.save(people);
session.getTransaction().commit();
}
}
<?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">
<!--
Mapping file autogenerated by MyEclipse - Hibernate Tools
-->
<hibernate-mapping>
<class name="com.gpdi.orm.object.People" table="People">
<id name="id" column="peopleId" unsaved-value="0" >
<generator class="increment">
</generator>
</id>
<property name="name" column="name"></property>
<set name="addresses" cascade="save-update">
<key column="peopleId" not-null="true" />
<one-to-many class="com.gpdi.orm.object.Address"/>
</set>
</class>
</hibernate-mapping>
package com.gpdi.orm.object;
import java.util.HashSet;
import java.util.Set;
public class People implements java.io.Serializable
{
private long id;
private String name;
private Set addresses = new HashSet();
public Set getAddresses() {
return addresses;
}
public void setAddresses(Set addresses) {
this.addresses = addresses;
}
public long getId() {
return id;
}
public void setId(long id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}
<?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">
<!--
Mapping file autogenerated by MyEclipse - Hibernate Tools
-->
<hibernate-mapping>
<class name="com.gpdi.orm.object.Address" table="Address">
<id name="id" column="addressId" unsaved-value="0">
<generator class="increment">
</generator>
</id>
<many-to-one name="people" column="peopleId" insert="false" update="false"></many-to-one>
<property name="addressName" column="addressName"></property>
<property name="codeNumber" column="codeNumber"></property>
</class>
</hibernate-mapping>
Address.java
package com.gpdi.orm.object;
public class Address implements java.io.Serializable
{
private long id;
private People people;
private String addressName;
private String codeNumber;
public String getAddressName() {
return addressName;
}
public void setAddressName(String addressName) {
this.addressName = addressName;
}
public String getCodeNumber() {
return codeNumber;
}
public void setCodeNumber(String codeNumber) {
this.codeNumber = codeNumber;
}
public long getId() {
return id;
}
public void setId(long id) {
this.id = id;
}
public People getPeople() {
return people;
}
public void setPeople(People people) {
this.people = people;
}
}
下蝲例子:整理?br /> 一对多的完整例?/a>
下蝲例子:整理?br />
]]>
W一U方式：QBC查询
String name = "", info = "";
if (sub != null && sub.getSubname() != null) {
name = sub.getSubname();
}
if (sub != null && sub.getSubinfo() != null) {
info = sub.getSubinfo();
}
Criteria cr = session.createCriteria(Subject.class);
cr.add(Expression.like("subname","%"+name+"%"));
cr.add(Expression.like("subinfo","%"+info+"%"));
W二U方式：HQL查询语句
String hql = "from Subject as s where s.subname like :name and s.subinfo like :info";
// 调用session的获得数据列表方法，传递HQL查询语句
String subnamevalue="要查询的中文?;
String sql="";
sql = "from Pfapp where name like :subname ";
Query query = session.createQuery(sql);
query.setString("subname","%"+subnamevalue+"%");
System.out.println("*********"+sql);
注：Subject为数据库表subject映射的类Q它有相应的属性subname、subinfo及相应的get和setҎQsub为Subject的一个实例化对象?br /> 另外说明的是Q如果你不写对象名称Q直接写字段Q那么hibernate按照数据库字段q行查找
如果你写 (对象?对象属性）Q那么hibernate按照ormapping中的映射字段q行查找
q是hibernate的灵zM处！Q?
]]>
我在目中具体用C一对一的联操?从网上拿?一个例子来?但是没有成功,于是只好自己研究,现在把修改后的代码帖出来.
本例子?font size="3">hibernate3.jar+oracle数据?br /> 库表:
CARD_TEST(CARDID[NUMBER(18)],CARDNUM[VARCHAR2(20)])
USER_TEST(USERID[NUMBER(18)],USERNAME[VARCHAR2(20)])
TestMain.java
package com.gpdi.test;
import org.hibernate.Session;
import org.hibernate.Transaction;
public class TestMain {
/**
* 存储一个用?br />
* @param user
*/
public void save(User user){
user.setUsername("TEST");
Card card=new Card();
//Card card1=new Card();
card.setCardnum("HGJUYT");
//card1.setCardnum("fghy55");
user.setCard(card);
//user.setCard(card1);
Session session=HibernateSessionFactory.currentSession();
card.setUser(user);
//card1.setUser(user);
Transaction tr=session.beginTransaction();
session.save(user);
//session.save(card);
tr.commit();
session.close();
}
public static void main(String[] args) throws Exception {
TestMain test=new TestMain();
test.save(new User());
}
}
Card.java
package com.gpdi.test;
/**
* Card generated by MyEclipse - Hibernate Tools
*/
public class Card implements java.io.Serializable {
// Fields
private Integer cardid;
private String cardnum;
private User user;
// Constructors
public User getUser() {
return user;
}
public void setUser(User user) {
this.user = user;
}
/** default constructor */
public Card() {
}
/** full constructor */
public Card(String cardnum) {
this.cardnum = cardnum;
}
// Property accessors
public Integer getCardid() {
return this.cardid;
}
public void setCardid(Integer cardid) {
this.cardid = cardid;
}
public String getCardnum() {
return this.cardnum;
}
public void setCardnum(String cardnum) {
this.cardnum = cardnum;
}
}
User.java
package com.gpdi.test;
import java.util.HashSet;
import java.util.Set;
/**
* User generated by MyEclipse - Hibernate Tools
*/
public class User implements java.io.Serializable {
// Fields
private Integer userid;
private String username;
private Card card;
//private Set card = new HashSet();
// Constructors
public Card getCard() {
return card;
}
public void setCard(Card card) {
this.card = card;
}
/** default constructor */
public User() {
}
/** full constructor */
public User(String username) {
this.username = username;
}
// Property accessors
public Integer getUserid() {
return this.userid;
}
public void setUserid(Integer userid) {
this.userid = userid;
}
public String getUsername() {
return this.username;
}
public void setUsername(String username) {
this.username = username;
}
}
HibernateSessionFactory.java
package com.gpdi.test;
import org.hibernate.HibernateException;
import org.hibernate.Session;
import org.hibernate.cfg.Configuration;
/**
* Configures and provides access to Hibernate sessions, tied to the
* current thread of execution. Follows the Thread Local Session
* pattern, see {@link http://hibernate.org/42.html}.
*/
public class HibernateSessionFactory {
/**
* Location of hibernate.cfg.xml file.
* NOTICE: Location should be on the classpath as Hibernate uses
* #resourceAsStream style lookup for its configuration file. That
* is place the config file in a Java package - the default location
* is the default Java package.<br><br>
* Examples: <br>
* <code>CONFIG_FILE_LOCATION = "/hibernate.conf.xml".
* CONFIG_FILE_LOCATION = "/com/foo/bar/myhiberstuff.conf.xml".</code>
*/
private static String CONFIG_FILE_LOCATION = "/hibernate.cfg.xml";
/** Holds a single instance of Session */
private static final ThreadLocal threadLocal = new ThreadLocal();
/** The single instance of hibernate configuration */
private static final Configuration cfg = new Configuration();
/** The single instance of hibernate SessionFactory */
private static org.hibernate.SessionFactory sessionFactory;
/**
* Returns the ThreadLocal Session instance. Lazy initialize
* the <code>SessionFactory</code> if needed.
*
* @return Session
* @throws HibernateException
*/
public static Session currentSession() throws HibernateException {
Session session = (Session) threadLocal.get();
if (session == null || !session.isOpen()) {
if (sessionFactory == null) {
try {
cfg.configure(CONFIG_FILE_LOCATION);
sessionFactory = cfg.buildSessionFactory();
} catch (Exception e) {
System.err
.println("%%%% Error Creating SessionFactory %%%%");
e.printStackTrace();
}
}
session = (sessionFactory != null) ? sessionFactory.openSession()
: null;
threadLocal.set(session);
}
return session;
}
/**
* Close the single hibernate session instance.
*
* @throws HibernateException
*/
public static void closeSession() throws HibernateException {
Session session = (Session) threadLocal.get();
threadLocal.set(null);
if (session != null) {
session.close();
}
}
/**
* Default constructor.
*/
private HibernateSessionFactory() {
}
}
Card.hbm.xml
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<!--
Mapping file autogenerated by MyEclipse - Hibernate Tools
-->
<hibernate-mapping>
<class name="com.gpdi.test.Card" table="CARD_TEST">
<id name="cardid" type="integer">
<column name="CARDID" />
<generator class="foreign" >
<param name="property">user</param>
</generator>
</id>
<property name="cardnum" type="string">
<column name="CARDNUM" length="45" not-null="true" />
</property>
<!--
foreign-key="userid"指定外键兌的字D?必须,不可~少 ,cascade="save-update"指定怎么操作U联,非必?br /> -->
<one-to-one name="user" foreign-key="userid" class="com.gpdi.test.User" cascade="save-update"></one-to-one>
</class>
</hibernate-mapping>
User.hbm.xml
<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<!--
Mapping file autogenerated by MyEclipse - Hibernate Tools
-->
<hibernate-mapping>
<class name="com.gpdi.test.User" table="USER_TEST">
<id name="userid" type="integer">
<column name="USERID" />
<generator class="increment"/>
</id>
<property name="username" type="string">
<column name="username" length="45" not-null="true" />
</property>
<one-to-one name="card" foreign-key="cardid" class="com.gpdi.test.Card" cascade="save-update"></one-to-one>
<!--
<set name="card" inverse="true" cascade="all">
<key column="cardid" />
<one-to-many class="com.gpdi.test.Card" />
</set>
<many-to-one name="card" class="com.gpdi.test.Card" insert="true" unique="true" lazy="false">
<column name="cardid" length="18" />
</many-to-one>
-->
</class>
</hibernate-mapping>
Hibernate实现一对一实例源码
]]>