Hibernate 一对多连接表单向关联

一、模型介绍

一个人（Person）对应多个地址（Address），比如家庭地址、公司地址。

二、实体（省略getter、setter方法）

public class Person1ntab {

private int personid;

private String name;

private int age;

private Set addresses=new HashSet();

public class Address1nfk implements Serializable {

private int addressid;

private String addressdetail;

三、表模型

mysql> desc join_1ntab;

+-----------+---------+------+-----+---------+-------+

| Field     | Type    | Null | Key | Default | Extra |

+-----------+---------+------+-----+---------+-------+

| personid  | int(11) | NO   | PRI |         |       |

| addressid | int(11) | NO   | PRI |         |       |

+-----------+---------+------+-----+---------+-------+

mysql> desc person_1ntab;

+----------+--------------+------+-----+---------+----------------+

| Field    | Type         | Null | Key | Default | Extra          |

+----------+--------------+------+-----+---------+----------------+

| personid | int(11)      | NO   | PRI | NULL    | auto_increment |

| name     | varchar(255) | YES  |     | NULL    |                |

| age      | int(11)      | YES  |     | NULL    |                |

+----------+--------------+------+-----+---------+----------------+

mysql> desc address_1ntab;

+---------------+--------------+------+-----+---------+----------------+

| Field         | Type         | Null | Key | Default | Extra          |

+---------------+--------------+------+-----+---------+----------------+

| addressid     | int(11)      | NO   | PRI | NULL    | auto_increment |

| addressdetail | varchar(255) | YES  |     | NULL    |                |

+---------------+--------------+------+-----+---------+----------------+

四、生成的SQL脚本

/* Formatted on 2007/08/21 10:58 (QP5 v5.50) */

CREATE TABLE `address_1ntab` (

`addressid` int(11) NOT NULL auto_increment,

`addressdetail` varchar(255) default NULL,

PRIMARY KEY  (`addressid`)

) ENGINE=InnoDB AUTO_INCREMENT=3 DEFAULT CHARSET=gbk;

/* Formatted on 2007/08/21 10:58 (QP5 v5.50) */

CREATE TABLE `join_1ntab` (

`personid` int(11) NOT NULL,

`addressid` int(11) NOT NULL,

PRIMARY KEY  (`personid`,`addressid`),

UNIQUE KEY `addressid` (`addressid`),

KEY `FK6B6078C3C8DF5BFF` (`personid`),

KEY `FK6B6078C3C2B11347` (`addressid`),

CONSTRAINT `FK6B6078C3C2B11347` FOREIGN KEY (`addressid`) REFERENCES `address_1ntab` (`addressid`),

CONSTRAINT `FK6B6078C3C8DF5BFF` FOREIGN KEY (`personid`) REFERENCES `person_1ntab` (`personid`)

) ENGINE=InnoDB DEFAULT CHARSET=gbk;

/* Formatted on 2007/08/21 10:58 (QP5 v5.50) */

CREATE TABLE `person_1ntab` (

`personid` int(11) NOT NULL auto_increment,

`name` varchar(255) default NULL,

`age` int(11) default NULL,

PRIMARY KEY  (`personid`)

) ENGINE=InnoDB AUTO_INCREMENT=2 DEFAULT CHARSET=gbk;

五、映射方法

<hibernate-mapping>

<class name="com.lavasoft.dx._1_n_tab.Person1ntab" table="PERSON_1ntab">

<id name="personid">

<generator class="identity"/>

</id>

<property name="name"/>

<property name="age"/>

<!--映射集合属性，join_1ntab是连接表表名-->

<set name="addresses"

table="join_1ntab"

>

<!--“column="personid"”确定PERSON_1ntab表关联到连接表的外键列名-->

<key column="personid"/>

<!--“column="addressid"”关联PERSON_1ntab表的Address1ntab对象的id在连接表中的列名-->

<!--“unique="true"表示1-N，Person1ntab是1，Address1ntab是多”-->

<many-to-many

column="addressid"

unique="true"

class="com.lavasoft.dx._1_n_tab.Address1ntab"/>

</set>

</class>

</hibernate-mapping>

<hibernate-mapping>

<class name="com.lavasoft.dx._1_n_tab.Address1ntab" table="ADDRESS_1ntab">

<id name="addressid">

<generator class="identity"/>

</id>

<property name="addressdetail"/>

</class>

</hibernate-mapping>

六、测试方法

public class Test_1ntab {

public static void main(String[] args){

Address1ntab add1=new Address1ntab();

Address1ntab add2=new Address1ntab();

Address1ntab add3=new Address1ntab();

Person1ntab p1=new Person1ntab();

Person1ntab p2=new Person1ntab();

add1.setAddressdetail("郑州市经三路");

add2.setAddressdetail("合肥市宿州路");

add3.setAddressdetail("北京市长安路");

p1.setName("wang");

p1.setAge(30);

p2.setName("lee");

p2.setAge(50);

p1.getAddresses().add(add1);

p1.getAddresses().add(add2);

//p2.getAddresses().add(add2);

p2.getAddresses().add(add3);

Session session= HibernateUtil.getCurrentSession();

Transaction tx=session.beginTransaction();

session.save(add1);

session.save(add2);

session.save(add3);

session.save(p1);

session.save(p2);

tx.commit();

HibernateUtil.closeSession();

}

}

七、测试结果

1) :正常保存.

session.save(add1);

session.save(add2);

session.save(add3);

session.save(p1);

session.save(p2);

Hibernate: insert into PERSON_1nfk (name, age) values (?, ?)

Hibernate: insert into ADDRESS_1nfk (addressdetail) values (?)

Hibernate: insert into ADDRESS_1nfk (addressdetail) values (?)

Hibernate: update ADDRESS_1nfk set personid=? where addressid=?

Hibernate: update ADDRESS_1nfk set personid=? where addressid=?

Hibernate 多对一外键单向关联

一、模型介绍

多个人（Person）对应一个地址（Address）。

二、实体（省略getter、setter方法）

public class Personn1fk {

private int personid;

private String name;

private int age;

private Addressn1fk addressn1fk;

public class Addressn1fk {

private int addressid;

private String addressdetail;

三、表模型

mysql> desc address_n1kf;

+---------------+--------------+------+-----+---------+----------------+

| Field         | Type         | Null | Key | Default | Extra          |

+---------------+--------------+------+-----+---------+----------------+

| addressid     | int(11)      | NO   | PRI | NULL    | auto_increment |

| addressdetail | varchar(255) | YES  |     | NULL    |                |

+---------------+--------------+------+-----+---------+----------------+

mysql> desc person_n1kf;

+-----------+--------------+------+-----+---------+----------------+

| Field     | Type         | Null | Key | Default | Extra          |

+-----------+--------------+------+-----+---------+----------------+

| personid  | int(11)      | NO   | PRI | NULL    | auto_increment |

| name      | varchar(255) | YES  |     | NULL    |                |

| age       | int(11)      | YES  |     | NULL    |                |

| addressId | int(11)      | YES  | MUL | NULL    |                |

+-----------+--------------+------+-----+---------+----------------+

四、生成的SQL脚本

CREATE TABLE `address_n1kf` (

`addressid` int(11) NOT NULL auto_increment,

`addressdetail` varchar(255) default NULL,

PRIMARY KEY  (`addressid`)

) ENGINE=InnoDB DEFAULT CHARSET=gbk;

DROP TABLE IF EXISTS `person_n1kf`;

CREATE TABLE `person_n1kf` (

`personid` int(11) NOT NULL auto_increment,

`name` varchar(255) default NULL,

`age` int(11) default NULL,

`addressId` int(11) default NULL,

PRIMARY KEY  (`personid`),

KEY `FK4571AF54A2A3EE48` (`addressId`),

CONSTRAINT `FK4571AF54A2A3EE48` FOREIGN KEY (`addressId`) REFERENCES `address_n1kf` (`addressid`)

) ENGINE=InnoDB DEFAULT CHARSET=gbk;

五、映射方法

<hibernate-mapping>

<class name="com.lavasoft.dx._n_1_fk.Personn1fk" table="PERSON_n1fk">

<id name="personid">

<generator class="identity"/>

</id>

<property name="name"/>

<property name="age"/>

<!--用来映射关联PO column是Address在该表中的外键列名-->

<many-to-one name="addressn1fk" column="addressId"/>

</class>

</hibernate-mapping>

<hibernate-mapping>

<class name="com.lavasoft.dx._n_1_fk.Addressn1fk" table="ADDRESS_n1fk">

<id name="addressid">

<generator class="identity"/>

</id>

<property name="addressdetail"/>

</class>

</hibernate-mapping>

六、测试方法

public class Test_n1fk {

public static void main(String[] args){

Personn1fk p1=new Personn1fk();

Personn1fk p2=new Personn1fk();

p1.setAge(21);

p1.setName("p1");

p2.setAge(23);

p2.setName("p2");

Addressn1fk add=new Addressn1fk();

add.setAddressdetail("郑州市经三路");

p1.setAddressn1fk(add);

p2.setAddressn1fk(add);

Session session=HibernateUtil.getCurrentSession();

Transaction tx=session.beginTransaction();

session.save(add);

session.save(p1);

session.save(p2);

tx.commit();

HibernateUtil.closeSession();

}

}

七、测试结果

1) :正常保存. 推荐这么干!

session.save(p1);

session.save(p2);

Hibernate: insert into ADDRESS_n1kf (addressdetail) values (?)

Hibernate: insert into PERSON_n1kf (name, age, addressId) values (?, ?, ?)

Hibernate: insert into PERSON_n1kf (name, age, addressId) values (?, ?, ?)

2) :正常保存.

session.save(p1);

session.save(p2);

session.save(add);

Hibernate: insert into PERSON_n1kf (name, age, addressId) values (?, ?, ?)

Hibernate: insert into PERSON_n1kf (name, age, addressId) values (?, ?, ?)

Hibernate: insert into ADDRESS_n1kf (addressdetail) values (?)

Hibernate: update PERSON_n1kf set name=?, age=?, addressId=? where personid=?

Hibernate: update PERSON_n1kf set name=?, age=?, addressId=? where personid=?

3) :正常保存.

session.save(add);

//        session.save(p1);

//        session.save(p2);

Hibernate: insert into ADDRESS_n1kf (addressdetail) values (?)

4) : 发生异常,不能保存.

//        session.save(add);

session.save(p1);

session.save(p2);

Hibernate: insert into PERSON_n1kf (name, age, addressId) values (?, ?, ?)

Hibernate: insert into PERSON_n1kf (name, age, addressId) values (?, ?, ?)

Exception in thread "main" org.hibernate.TransientObjectException: com.lavasoft.dx._n_1_fk.Addressn1kf

Hibernate 多对一连接表单向关联

一、模型介绍

多个人（Person）对应一个地址（Address）。

二、实体（省略getter、setter方法）

public class Personn1tab {

private int personid;

private String name;

private int age;

private Addressn1tab addressn1tab;

public class Addressn1tab {

private int addressid;

private String addressdetail;

三、表模型

mysql> desc address_n1tab;

+---------------+--------------+------+-----+---------+----------------+

| Field         | Type         | Null | Key | Default | Extra          |

+---------------+--------------+------+-----+---------+----------------+

| addressid     | int(11)      | NO   | PRI | NULL    | auto_increment |

| addressdetail | varchar(255) | YES  |     | NULL    |                |

+---------------+--------------+------+-----+---------+----------------+

mysql> desc join_n1tab;

+------------+---------+------+-----+---------+-------+

| Field      | Type    | Null | Key | Default | Extra |

+------------+---------+------+-----+---------+-------+

| personid   | int(11) | NO   | PRI |         |       |

| addressn1tab | int(11) | YES  | MUL | NULL    |       |

+------------+---------+------+-----+---------+-------+

mysql> desc person_n1tab;

+----------+--------------+------+-----+---------+----------------+

| Field    | Type         | Null | Key | Default | Extra          |

+----------+--------------+------+-----+---------+----------------+

| personid | int(11)      | NO   | PRI | NULL    | auto_increment |

| name     | varchar(255) | YES  |     | NULL    |                |

| age      | int(11)      | YES  |     | NULL    |                |

+----------+--------------+------+-----+---------+----------------+

四、生成的SQL脚本

CREATE TABLE `address_n1tab` (

`addressid` int(11) NOT NULL auto_increment,

`addressdetail` varchar(255) default NULL,

PRIMARY KEY  (`addressid`)

) ENGINE=InnoDB AUTO_INCREMENT=2 DEFAULT CHARSET=gbk;

CREATE TABLE `join_n1tab` (

`personid` int(11) NOT NULL,

`address11fk` int(11) default NULL,

PRIMARY KEY  (`personid`),

KEY `FKAC780AAADAE3A82C` (`personid`),

KEY `FKAC780AAAC6242A64` (`address11fk`),

CONSTRAINT `FKAC780AAAC6242A64` FOREIGN KEY (`address11fk`) REFERENCES `address_n1tab` (`addressid`),

CONSTRAINT `FKAC780AAADAE3A82C` FOREIGN KEY (`personid`) REFERENCES `person_n1tab` (`personid`)

) ENGINE=InnoDB DEFAULT CHARSET=gbk;

CREATE TABLE `person_n1tab` (

`personid` int(11) NOT NULL auto_increment,

`name` varchar(255) default NULL,

`age` int(11) default NULL,

PRIMARY KEY  (`personid`)

) ENGINE=InnoDB AUTO_INCREMENT=3 DEFAULT CHARSET=gbk;

五、映射方法

<hibernate-mapping>

<class name="com.lavasoft.dx._n_1_tab.Personn1tab" table="PERSON_n1tab">

<id name="personid">

<generator class="identity"/>

</id>

<property name="name"/>

<property name="age"/>

<!--使用join元素显式确定链接表-->

<join table="join_n1tab">

<!--映射关联所用的外键-->

<key column="personid"/>

<many-to-one name="addressn1tab"/>

</join>

</class>

</hibernate-mapping>

<hibernate-mapping>

<class name="com.lavasoft.dx._n_1_tab.Addressn1tab" table="ADDRESS_n1tab">

<id name="addressid">

<generator class="identity"/>

</id>

<property name="addressdetail"/>

</class>

</hibernate-mapping>

六、测试方法

public class Test_n1tab {

public static void main(String[] args){

Personn1tab p1=new Personn1tab();

Personn1tab p2=new Personn1tab();

p1.setAge(21);

p1.setName("p1");

p2.setAge(23);

p2.setName("p2");

Addressn1tab add=new Addressn1tab();

add.setAddressdetail("郑州市经三路");

p1.setAddressn1tab(add);

p2.setAddressn1tab(add);

Session session=HibernateUtil.getCurrentSession();

Transaction tx=session.beginTransaction();

session.save(add);

session.save(p1);

session.save(p2);

tx.commit();

HibernateUtil.closeSession();

}

}

七、测试结果

1) :正常保存. 推荐这么干!

session.save(p1);

session.save(p2);

Hibernate: insert into ADDRESS_n1tab (addressdetail) values (?)

Hibernate: insert into PERSON_n1tab (name, age) values (?, ?)

Hibernate: insert into join_n1tab (address11fk, personid) values (?, ?)

Hibernate: insert into PERSON_n1tab (name, age) values (?, ?)

Hibernate: insert into join_n1tab (address11fk, personid) values (?, ?)

2) :正常保存.

session.save(p1);

session.save(p2);

session.save(add);

Hibernate: insert into PERSON_n1tab (name, age) values (?, ?)

Hibernate: insert into join_n1tab (address11fk, personid) values (?, ?)

Hibernate: insert into PERSON_n1tab (name, age) values (?, ?)

Hibernate: insert into join_n1tab (address11fk, personid) values (?, ?)

Hibernate 多对多单向关联

一、模型介绍

多个人（Person）对应多个地址（Address）。

一个人可对应多个地址，一个地址也可以对应多个人。

二、实体（省略getter、setter方法）

public class Personnn {

private int personid;

private String name;

private int age;

private Set addresses=new HashSet();

public class Addressnn {

private int addressid;

private String addressdetail;

三、表模型

mysql> desc person_nn;

+----------+--------------+------+-----+---------+----------------+

| Field    | Type         | Null | Key | Default | Extra          |

+----------+--------------+------+-----+---------+----------------+

| personid | int(11)      | NO   | PRI | NULL    | auto_increment |

| name     | varchar(255) | YES  |     | NULL    |                |

| age      | int(11)      | YES  |     | NULL    |                |

+----------+--------------+------+-----+---------+----------------+

mysql> desc join_nn;

+-----------+---------+------+-----+---------+-------+

| Field     | Type    | Null | Key | Default | Extra |

+-----------+---------+------+-----+---------+-------+

| personid  | int(11) | NO   | PRI |         |       |

| addressid | int(11) | NO   | PRI |         |       |

+-----------+---------+------+-----+---------+-------+

mysql> desc person_nn;

+----------+--------------+------+-----+---------+----------------+

| Field    | Type         | Null | Key | Default | Extra          |

+----------+--------------+------+-----+---------+----------------+

| personid | int(11)      | NO   | PRI | NULL    | auto_increment |

| name     | varchar(255) | YES  |     | NULL    |                |

| age      | int(11)      | YES  |     | NULL    |                |

+----------+--------------+------+-----+---------+----------------+

四、生成的SQL脚本

/* Formatted on 2007/08/21 11:13 (QP5 v5.50) */

CREATE TABLE `address_nn` (

`addressid` int(11) NOT NULL auto_increment,

`addressdetail` varchar(255) default NULL,

PRIMARY KEY  (`addressid`)

) ENGINE=InnoDB AUTO_INCREMENT=4 DEFAULT CHARSET=gbk;

/* Formatted on 2007/08/21 11:14 (QP5 v5.50) */

CREATE TABLE `join_nn` (

`personid` int(11) NOT NULL,

`addressid` int(11) NOT NULL,

PRIMARY KEY  (`personid`,`addressid`),

KEY `FKAAB98CF5E008E752` (`personid`),

KEY `FKAAB98CF5239F6A16` (`addressid`),

CONSTRAINT `FKAAB98CF5239F6A16` FOREIGN KEY (`addressid`) REFERENCES `address_nn` (`addressid`),

CONSTRAINT `FKAAB98CF5E008E752` FOREIGN KEY (`personid`) REFERENCES `person_nn` (`personid`)

) ENGINE=InnoDB DEFAULT CHARSET=gbk;

/* Formatted on 2007/08/21 11:14 (QP5 v5.50) */

CREATE TABLE `person_nn` (

`personid` int(11) NOT NULL auto_increment,

`name` varchar(255) default NULL,

`age` int(11) default NULL,

PRIMARY KEY  (`personid`)

) ENGINE=InnoDB AUTO_INCREMENT=3 DEFAULT CHARSET=gbk;

五、映射方法

<hibernate-mapping>

<class name="com.lavasoft.dx._n_n.Personnn" table="PERSON_nn">

<id name="personid">

<generator class="identity"/>

</id>

<property name="name"/>

<property name="age"/>

<!--映射集合属性，join_1ntab是连接表表名-->

<set name="addresses"

table="join_nn"

>

<!--“column="personid"”确定PERSON_1ntab表关联到连接表的外键列名-->

<key column="personid"/>

<!--“column="addressid"”关联PERSON_1ntab表的Address1ntab对象的id在连接表中的列名-->

<many-to-many

column="addressid"

class="com.lavasoft.dx._n_n.Addressnn"/>

</set>

</class>

</hibernate-mapping>

<hibernate-mapping>

<class name="com.lavasoft.dx._n_n.Addressnn" table="ADDRESS_nn">

<id name="addressid">

<generator class="identity"/>

</id>

<property name="addressdetail"/>

</class>

</hibernate-mapping>

六、测试方法

public class Test_nn {

public static void main(String[] args){

Addressnn add1=new Addressnn();

Addressnn add2=new Addressnn();

Addressnn add3=new Addressnn();

Personnn p1=new Personnn();

Personnn p2=new Personnn();

add1.setAddressdetail("郑州市经三路");

add2.setAddressdetail("合肥市宿州路");

add3.setAddressdetail("北京市长安路");

p1.setName("wang");

p1.setAge(30);

p2.setName("lee");

p2.setAge(50);

p1.getAddresses().add(add1);

p1.getAddresses().add(add2);

p2.getAddresses().add(add2);

p2.getAddresses().add(add3);

Session session= HibernateUtil.getCurrentSession();

Transaction tx=session.beginTransaction();

session.save(add1);

session.save(add2);

session.save(add3);

session.save(p1);

session.save(p2);

tx.commit();

HibernateUtil.closeSession();

}

}

七、测试结果

1) :正常保存.

session.save(add1);

session.save(add2);

session.save(add3);

session.save(p1);

session.save(p2);

Hibernate: insert into ADDRESS_nn (addressdetail) values (?)

Hibernate: insert into ADDRESS_nn (addressdetail) values (?)

Hibernate: insert into ADDRESS_nn (addressdetail) values (?)

Hibernate: insert into PERSON_nn (name, age) values (?, ?)

Hibernate: insert into PERSON_nn (name, age) values (?, ?)

Hibernate: insert into join_nn (personid, addressid) values (?, ?)

Hibernate: insert into join_nn (personid, addressid) values (?, ?)

Hibernate: insert into join_nn (personid, addressid) values (?, ?)

Hibernate: insert into join_nn (personid, addressid) values (?, ?)

Hibernate 一对一连接表双向关联

一、模型介绍

一个人（Person）对应一个地址（Address）。

二、实体（省略getter、setter方法）

public class Person11tab_sx {

private int personid;

private String name;

private int age;

private Address11tab_sx address11tab_sx;

public class Address11tab_sx {

private int addressid;

private String addressdetail;

private Person11tab_sx person11tab_sx;

三、表模型

mysql> desc person_11tab_sx;

+----------+--------------+------+-----+---------+----------------+

| Field    | Type         | Null | Key | Default | Extra          |

+----------+--------------+------+-----+---------+----------------+

| personid | int(11)      | NO   | PRI | NULL    | auto_increment |

| name     | varchar(255) | YES  |     | NULL    |                |

| age      | int(11)      | YES  |     | NULL    |                |

+----------+--------------+------+-----+---------+----------------+

mysql> desc address_11tab_sx;

+---------------+--------------+------+-----+---------+----------------+

| Field         | Type         | Null | Key | Default | Extra          |

+---------------+--------------+------+-----+---------+----------------+

| addressid     | int(11)      | NO   | PRI | NULL    | auto_increment |

| addressdetail | varchar(255) | YES  |     | NULL    |                |

+---------------+--------------+------+-----+---------+----------------+

四、生成的SQL脚本

/* Formatted on 2007/08/22 17:35 (QP5 v5.50) */

CREATE TABLE `person_11tab_sx` (

`personid` int(11) NOT NULL auto_increment,

`name` varchar(255) default NULL,

`age` int(11) default NULL,

PRIMARY KEY  (`personid`)

) ENGINE=InnoDB DEFAULT CHARSET=gbk;

/* Formatted on 2007/08/22 17:34 (QP5 v5.50) */

CREATE TABLE `address_11tab_sx` (

`addressid` int(11) NOT NULL auto_increment,

`addressdetail` varchar(255) default NULL,

PRIMARY KEY  (`addressid`)

) ENGINE=InnoDB DEFAULT CHARSET=gbk;

/* Formatted on 2007/08/22 18:35 (QP5 v5.50) */
CREATE TABLE `join_11tab_sx` (
  `addressid` int(11) NOT NULL,
  `personid` int(11) NOT NULL,
  PRIMARY KEY  (`personid`),
  UNIQUE KEY `addressid` (`addressid`),
  UNIQUE KEY `personid` (`personid`),
  KEY `FKF4AA80E44327AAB6` (`personid`),
  KEY `FKF4AA80E460C0C9F0` (`addressid`),
  CONSTRAINT `FKF4AA80E460C0C9F0` FOREIGN KEY (`addressid`) REFERENCES `address_11tab_sx` (`addressid`),
  CONSTRAINT `FKF4AA80E44327AAB6` FOREIGN KEY (`personid`) REFERENCES `person_11tab_sx` (`personid`)
) ENGINE=InnoDB DEFAULT CHARSET=gbk;

五、映射方法

<hibernate-mapping>

<class name="com.lavasoft.sx._1_1_tab.Person11tab_sx" table="PERSON_11tab_sx">

<id name="personid">

<generator class="identity"/>

</id>

<property name="name"/>

<property name="age"/>

<join table="join_11tab_sx"

optional="true">

<key column="personid"

unique="true"/>

<many-to-one name="address11tab_sx"

column="addressid"

not-null="true"

unique="true"/>

</join>

</class>

</hibernate-mapping>

<hibernate-mapping>

<class name="com.lavasoft.sx._1_1_tab.Address11tab_sx" table="ADDRESS_11tab_sx">

<id name="addressid">

<generator class="identity"/>

</id>

<property name="addressdetail"/>

<join table="join_11tab_sx"

optional="true"

inverse="true">

<key column="addressid"

unique="true"/>

<many-to-one name="person11tab_sx" column="personid"

not-null="true" unique="true"/>

</join>

</class>

</hibernate-mapping>

六、测试方法

public class Test_11tab_sx {

public static void main(String[] args){

Address11tab_sx add = new Address11tab_sx();

Person11tab_sx p = new Person11tab_sx();

add.setAddressdetail("郑州市经三路");

p.setAge(12);

p.setName("wudalang");

add.setPerson11tab_sx(p);

p.setAddress11tab_sx(add);

Session session = HibernateUtil.getCurrentSession();

Transaction tx = session.beginTransaction();

session.saveOrUpdate(p);

session.saveOrUpdate(add);

tx.commit();

HibernateUtil.closeSession();

}

}

七、测试结果

1) :正常保存.

session.saveOrUpdate(p);

session.saveOrUpdate(add);

Hibernate: insert into PERSON_11tab_sx (name, age) values (?, ?)

Hibernate: insert into ADDRESS_11tab_sx (addressdetail) values (?)

Hibernate: insert into join_11tab_sx (addressid, personid) values (?, ?)

Hibernate 一对多外键双向关联

一、模型介绍

一个人（Person）对应多个地址（Address）。

二、实体（省略getter、setter方法）

public class Person1nfk_sx implements Serializable {

private int personid;

private String name;

private int age;

private Set addresses=new HashSet();

public class Address1nfk_sx implements Serializable {

private int addressid;

private String addressdetail;

private Person1nfk_sx person1nfkSx;

三、表模型

mysql> desc person_1nfk_sx;

+----------+--------------+------+-----+---------+----------------+

| Field    | Type         | Null | Key | Default | Extra          |

+----------+--------------+------+-----+---------+----------------+

| personid | int(11)      | NO   | PRI | NULL    | auto_increment |

| name     | varchar(255) | YES  |     | NULL    |                |

| age      | int(11)      | YES  |     | NULL    |                |

+----------+--------------+------+-----+---------+----------------+

mysql> desc address_1nfk_sx;

+---------------+--------------+------+-----+---------+----------------+

| Field         | Type         | Null | Key | Default | Extra          |

+---------------+--------------+------+-----+---------+----------------+

| addressid     | int(11)      | NO   | PRI | NULL    | auto_increment |

| addressdetail | varchar(255) | YES  |     | NULL    |                |

| personid      | int(11)      | NO   | MUL |         |                |

+---------------+--------------+------+-----+---------+----------------+

四、生成的SQL脚本

/* Formatted on 2007/08/22 17:42 (QP5 v5.50) */

CREATE TABLE `address_1nfk` (

`addressid` int(11) NOT NULL auto_increment,

`addressdetail` varchar(255) default NULL,

`personid` int(11) default NULL,

PRIMARY KEY  (`addressid`),

KEY `FK9B93456DA6D6C1F5` (`personid`),

CONSTRAINT `FK9B93456DA6D6C1F5` FOREIGN KEY (`personid`) REFERENCES `person_1nfk` (`personid`)

) ENGINE=InnoDB DEFAULT CHARSET=gbk;

/* Formatted on 2007/08/22 17:42 (QP5 v5.50) */

CREATE TABLE `person_1nfk` (

`personid` int(11) NOT NULL auto_increment,

`name` varchar(255) default NULL,

`age` int(11) default NULL,

PRIMARY KEY  (`personid`)

) ENGINE=InnoDB DEFAULT CHARSET=gbk;

五、映射方法

<hibernate-mapping>

<class name="com.lavasoft.sx._1_n_fk.Person1nfk_sx" table="PERSON_1nfk_sx">

<id name="personid">

<generator class="identity"/>

</id>

<property name="name"/>

<property name="age"/>

<!--映射集合属性，关联到持久化类-->

<set name="addresses" inverse="true" cascade="all">

<!--column用于指定外键列名-->

<key column="personid" not-null="true"/>

<!--映射关联类-->

<one-to-many class="com.lavasoft.sx._1_n_fk.Address1nfk_sx"/>

</set>

</class>

</hibernate-mapping>

<hibernate-mapping>

<class name="com.lavasoft.sx._1_n_fk.Address1nfk_sx" table="ADDRESS_1nfk_sx">

<id name="addressid">

<generator class="identity"/>

</id>

<property name="addressdetail"/>

<!--映射关联属性，column属性指定外键列名-->

<many-to-one name="person1nfk"

class="com.lavasoft.sx._1_n_fk.Person1nfk_sx"

fetch="select"

cascade="save-update">

<column name="personid" not-null="true"/>

</many-to-one>

</class>

</hibernate-mapping>

六、测试方法

public class Test_1nfk_sx {

public static void main(String[] args){

Address1nfk_sx add1=new Address1nfk_sx();

Address1nfk_sx add2=new Address1nfk_sx();

Person1nfk_sx p=new Person1nfk_sx();

add1.setAddressdetail("郑州市经三路");

add2.setAddressdetail("合肥市宿州路");

p.setName("wang");

p.setAge(30);

p.getAddresses().add(add1);

p.getAddresses().add(add2);

add1.setPerson1nfk(p);

add2.setPerson1nfk(p);

Session session= HibernateUtil.getCurrentSession();

Transaction tx=session.beginTransaction();

session.save(p);

session.saveOrUpdate(add1);

session.saveOrUpdate(add2);

tx.commit();

HibernateUtil.closeSession();

}

}

七、测试结果

1) :正常保存.

session.save(p);

session.saveOrUpdate(add1);

session.saveOrUpdate(add2);

Hibernate: insert into PERSON_1nfk_sx (name, age) values (?, ?)

Hibernate: insert into ADDRESS_1nfk_sx (addressdetail, personid) values (?, ?)

Hibernate: insert into ADDRESS_1nfk_sx (addressdetail, personid) values (?, ?)

Hibernate 一对多连接表双向关联

一、模型介绍

一个人（Person）对应多个地址（Address）。

二、实体（省略getter、setter方法）

public class Person1ntab_sx {

private int personid;

private String name;

private int age;

private Set addresses=new HashSet();

public class Address1ntab_sx {

private int addressid;

private String addressdetail;

private Person1ntab_sx person1ntab_sx;

三、表模型

mysql> desc person_1ntab_sx;

+----------+--------------+------+-----+---------+----------------+

| Field    | Type         | Null | Key | Default | Extra          |

+----------+--------------+------+-----+---------+----------------+

| personid | int(11)      | NO   | PRI | NULL    | auto_increment |

| name     | varchar(255) | YES  |     | NULL    |                |

| age      | int(11)      | YES  |     | NULL    |                |

+----------+--------------+------+-----+---------+----------------+

mysql> desc address_1ntab_sx;

+---------------+--------------+------+-----+---------+----------------+

| Field         | Type         | Null | Key | Default | Extra          |

+---------------+--------------+------+-----+---------+----------------+

| addressid     | int(11)      | NO   | PRI | NULL    | auto_increment |

| addressdetail | varchar(255) | YES  |     | NULL    |                |

+---------------+--------------+------+-----+---------+----------------+

mysql> desc join_1ntab_sx;

+-----------+---------+------+-----+---------+-------+

| Field     | Type    | Null | Key | Default | Extra |

+-----------+---------+------+-----+---------+-------+

| addressid | int(11) | NO   | PRI |         |       |

| personid  | int(11) | NO   | PRI |         |       |

+-----------+---------+------+-----+---------+-------+

四、生成的SQL脚本

/* Formatted on 2007/08/22 17:52 (QP5 v5.50) */

CREATE TABLE `address_1ntab_sx` (

`addressid` int(11) NOT NULL auto_increment,

`addressdetail` varchar(255) default NULL,

PRIMARY KEY  (`addressid`)

) ENGINE=InnoDB DEFAULT CHARSET=gbk;

/* Formatted on 2007/08/22 17:52 (QP5 v5.50) */

CREATE TABLE `person_1ntab_sx` (

`personid` int(11) NOT NULL auto_increment,

`name` varchar(255) default NULL,

`age` int(11) default NULL,

PRIMARY KEY  (`personid`)

) ENGINE=InnoDB DEFAULT CHARSET=gbk;

/* Formatted on 2007/08/22 17:52 (QP5 v5.50) */

CREATE TABLE `join_1ntab_sx` (

`addressid` int(11) NOT NULL,

`personid` int(11) NOT NULL,

PRIMARY KEY  (`personid`,`addressid`),

KEY `FK8F869F61F93DDD6` (`personid`),

KEY `FK8F869F61FC0F682A` (`addressid`),

CONSTRAINT `FK8F869F61FC0F682A` FOREIGN KEY (`addressid`) REFERENCES `address_1ntab_sx` (`addressid`),

CONSTRAINT `FK8F869F61F93DDD6` FOREIGN KEY (`personid`) REFERENCES `person_1ntab_sx` (`personid`)

) ENGINE=InnoDB DEFAULT CHARSET=gbk;

五、映射方法

<hibernate-mapping>

<class name="com.lavasoft.sx._1_n_tab.Person1ntab_sx" table="PERSON_1ntab_sx">

<id name="personid">

<generator class="identity"/>

</id>

<property name="name"/>

<property name="age"/>

<!--映射集合属性，关联到持久化类-->

<!--table="join_1ntab_sx"指定了连接表的名字-->

<set name="addresses"

table="join_1ntab_sx"

cascade="all">

<!--column="personid"指定连接表中关联当前实体类的列名-->

<key column="personid" not-null="true"/>

<!--unique="true"表示当前实体类是"1",不是"n"-->

<many-to-many column="addressid"

unique="true"

class="com.lavasoft.sx._1_n_tab.Address1ntab_sx"/>

</set>

</class>

</hibernate-mapping>

<hibernate-mapping>

<class name="com.lavasoft.sx._1_n_tab.Address1ntab_sx"

table="ADDRESS_1ntab_sx">

<id name="addressid">

<generator class="identity"/>

</id>

<property name="addressdetail"/>

<!--映射关联属性，column属性指定外键列名-->

<join   table="join_1ntab_sx"

inverse="true"

optional="true">

<key column="addressid"/>

<many-to-one name="person1ntab_sx"

column="personid"

cascade="all"

not-null="true"/>

</join>

</class>

</hibernate-mapping>

六、测试方法

public class Test_1ntab_sx {

public static void main(String[] args){

Address1ntab_sx add1=new Address1ntab_sx();

Address1ntab_sx add2=new Address1ntab_sx();

Person1ntab_sx p=new Person1ntab_sx();

add1.setAddressdetail("郑州市经三路");

add2.setAddressdetail("合肥市宿州路");

p.setName("wang");

p.setAge(30);

p.getAddresses().add(add1);

p.getAddresses().add(add2);

add1.setPerson1ntab_sx(p);

add2.setPerson1ntab_sx(p);

Session session= HibernateUtil.getCurrentSession();

Transaction tx=session.beginTransaction();

//        session.save(p);

session.saveOrUpdate(add1);

session.saveOrUpdate(add2);

tx.commit();

HibernateUtil.closeSession();

}

}

七、测试结果

1) :正常保存.

//        session.save(p);

session.saveOrUpdate(add1);

session.saveOrUpdate(add2);

Hibernate: insert into PERSON_1ntab_sx (name, age) values (?, ?)

Hibernate: insert into ADDRESS_1ntab_sx (addressdetail) values (?)

Hibernate: insert into ADDRESS_1ntab_sx (addressdetail) values (?)

Hibernate: insert into join_1ntab_sx (personid, addressid) values (?, ?)

Hibernate: insert into join_1ntab_sx (personid, addressid) values (?, ?)