Hibernate关联关系映射配置

1、hibernate关联关系映射配置2一、一对一单向外键关联：21.1目录结构21.2 annotation方式21.3 xml方式41.4 hibernate配置文件7二、一对一双向外键关联72.1 annotation方式72.2 xml方式9三、一对一单向主键关联（不重要）123.1 annotation方式123.2 xml方式14四、一对一双向主键关联（不重要）164.1 annotation方式163.2 xml方式19五、组件映射215.1 annotation方式215.2 xml方式23六、多对一单向关联256.1 annotation方式256.2 xml方式27七、一对多单

2、向关联297.1 annotation方式297.2 xml方式31八、一对多、多对一双向关联348.1 annotation方式348.2 xml方式36九、多对多单向关联398.1 annotation方式398.2 xml方式41十、多对多双向关联448.1 annotation方式448.2 xml方式46hibernate关联关系映射配置一、 一对一单向外键关联：1.1目录结构图1-1 目录结构图1.2 annotation方式1.2.1 类图图1-2 类关联关系图1.2.2数据库表结构图1-3数据库表结构图1.2.3 实体类package com.rongqq.hibernate3

3、.annotation.entity;import java.math.bigdecimal;import javax.persistence.column;import javax.persistence.entity;import javax.persistence.generatedvalue;import javax.persistence.generationtype;import javax.persistence.id;import javax.persistence.onetoone;import javax.persistence.sequencegenerator;enti

4、ty(name="h_husband_")sequencegenerator(name="husband_seq_gene", sequencename="husband_seq", allocationsize=1)public class husband private bigdecimal id;private string name;private wife wife;idcolumn(precision=4, scale=0)generatedvalue(strategy=generationtype.sequence, g

5、enerator="husband_seq_gene")public bigdecimal getid() return id;column(length=30)public string getname() return name;onetoone/joincolumn(name="wife_id")/不写也没问题，自动生成的字段也叫wife_idpublic wife getwife() return wife;public void setid(bigdecimal id) this.id = id;public void setname(stri

6、ng name) = name;public void setwife(wife wife) this.wife = wife;package com.rongqq.hibernate3.annotation.entity;import java.math.bigdecimal;import javax.persistence.column;import javax.persistence.entity;import javax.persistence.generatedvalue;import javax.persistence.generationtype;import

7、 javax.persistence.id;import javax.persistence.sequencegenerator;entity(name="h_wife_")sequencegenerator(name="wife_seq_gene", sequencename="wife_seq")public class wife private bigdecimal id;private string name;idcolumn(precision=4)generatedvalue(strategy=generationtype

8、.sequence, generator="wife_seq_gene")public bigdecimal getid() return id;public void setid(bigdecimal id) this.id = id;column(length=30)public string getname() return name;public void setname(string name) = name;1.3 xml方式1.3.1 类图图1-4 类关联关系图1.3.2 数据库表结构图1-5数据库表结构图1.3.3 实体类package

9、com.rongqq.hibernate3.xml.entity;import java.math.bigdecimal;public class xml_husband private bigdecimal id;private string name;private xml_wife wife;public bigdecimal getid() return id;public string getname() return name;public xml_wife getwife() return wife;public void setid(bigdecimal id) this.id

10、 = id;public void setname(string name) = name;public void setwife(xml_wife wife) this.wife = wife;package com.rongqq.hibernate3.xml.entity;import java.math.bigdecimal;public class xml_wife private bigdecimal id;private string name;public bigdecimal getid() return id;public void setid(bigde

11、cimal id) this.id = id;public string getname() return name;public void setname(string name) = name;1.3.4 对象关系映射文件<?xml version="1.0"?><!doctype hibernate-mapping public "-/hibernate/hibernate mapping dtd 3.0/en""<hibernate-mapping package="com.rong

12、qq.hibernate3.xml.entity"><class name="xml_husband" table="h_husband_xml" dynamic-update="true"><id name="id" type="big_decimal"><column name="id" precision="4" scale="0" /><generator class=&

13、quot;sequence"><param name="sequence">h_student_seq_xml</param></generator></id><property name="name" length="30"></property><many-to-one name="wife" column="wife_id" unique="true" not-null=&qu

14、ot;true" /><!-many-to-one是站在当前类xml_husband的角度来看，xml_husband与wife是多对一-> </class></hibernate-mapping><?xml version="1.0"?><!doctype hibernate-mapping public "-/hibernate/hibernate mapping dtd 3.0/en" "<hibernate-mapping package="com.r

15、ongqq.hibernate3.xml.entity"><class name="xml_wife" table="h_wife_xml" dynamic-update="true"><id name="id"><column name="id" precision="4" scale="0" /><generator class="sequence"><param

16、 name="sequence">h_student_seq_xml</param></generator></id><property name="name" length="30" /> </class></hibernate-mapping>1.4 hibernate配置文件<?xml version='1.0' encoding='utf-8'?><!doctype hibernate-configu

17、ration public "-/hibernate/hibernate configuration dtd 3.0/en" "<hibernate-configuration><session-factory><property name="connection.driver_class">oracle.jdbc.driver.oracledriver</property><property name="connection.url">jdbc:oracle:th

18、in::1521:silence</property><property name="connection.username">cnuser</property><property name="connection.password">cn830306</property><property name="connection.pool_size">1</property><property name="current_

19、session_context_class">thread</property><property name="vider_class">org.hibernate.cache.nocacheprovider</property><property name="show_sql">true</property><property name="format_sql">true</property><property

20、 name="dialect">org.hibernate.dialect.oracle9dialect</property><!-<property name="hbm2ddl.auto">update</property>-><mapping class="com.rongqq.hibernate3.annotation.entity.husband" /><mapping class="com.rongqq.hibernate3.annotatio

21、n.entity.wife" /><mapping resource="com/rongqq/hibernate3/xml/entity/xml_husband.hbm.xml" /><mapping resource="com/rongqq/hibernate3/xml/entity/xml_wife.hbm.xml" /></session-factory></hibernate-configuration>二、一对一双向外键关联2.1 annotation方式2.1.1 类图图2-1类

22、关联关系图2.1.2 数据库结构图图2-2数据库表结构图2.1.3 实体类entity(name="h_husband_")sequencegenerator(name="husband_seq_gene", sequencename="husband_seq", allocationsize=1)public class husband private bigdecimal id;private string name;private wife wife;idcolumn(precision=4, scale=0)generated

23、value(strategy=generationtype.sequence, generator="husband_seq_gene")public bigdecimal getid() return id;column(length=30)public string getname() return name;onetoone/joincolumn(name="wife_id")/不写也没问题，自动生成的字段也叫wife_idpublic wife getwife() return wife;public void setid(bigdecimal

24、id) this.id = id;public void setname(string name) = name;public void setwife(wife wife) this.wife = wife;entity(name="h_wife_")sequencegenerator(name="wife_seq_gene", sequencename="wife_seq")public class wife private bigdecimal id;private string name;private h

25、usband husband;idcolumn(precision=4)generatedvalue(strategy=generationtype.sequence, generator="wife_seq_gene")public bigdecimal getid() return id;public void setid(bigdecimal id) this.id = id;column(length=30)public string getname() return name;public void setname(string name) =

26、 name;onetoone(mappedby="wife")public husband gethusband() return husband;public void sethusband(husband husband) this.husband = husband;2.2 xml方式2.2.1 类图图2-3 类关联关系图2.2.2 数据库结构图2.2.3 实体类package com.rongqq.hibernate3.xml.entity;import java.math.bigdecimal;public class xml_husband private bi

27、gdecimal id;private string name;private xml_wife wife;public bigdecimal getid() return id;public string getname() return name;public xml_wife getwife() return wife;public void setid(bigdecimal id) this.id = id;public void setname(string name) = name;public void setwife(xml_wife wife) this.

28、wife = wife;package com.rongqq.hibernate3.xml.entity;import java.math.bigdecimal;public class xml_wife private bigdecimal id;private string name;private xml_husband husband;public bigdecimal getid() return id;public void setid(bigdecimal id) this.id = id;public string getname() return name;public vo

29、id setname(string name) = name;public xml_husband gethusband() return husband;public void sethusband(xml_husband husband) this.husband = husband;2.2.4 对象关系映射文件<?xml version="1.0"?><!doctype hibernate-mapping public "-/hibernate/hibernate mapping dtd 3.0/en" &qu

30、ot;<hibernate-mapping package="com.rongqq.hibernate3.xml.entity"><class name="xml_husband" table="h_husband_xml" dynamic-update="true"><id name="id" type="big_decimal"><column name="id" precision="4"

31、 scale="0" /><generator class="sequence"><param name="sequence">h_student_seq_xml</param></generator></id><property name="name" length="30"></property><many-to-one name="wife" unique="tru

32、e" not-null="true" ><column name="wife_id" precision="4"></column></many-to-one> </class></hibernate-mapping><?xml version="1.0"?><!doctype hibernate-mapping public "-/hibernate/hibernate mapping dtd 3.0/en&q

33、uot; "<hibernate-mapping package="com.rongqq.hibernate3.xml.entity"><class name="xml_wife" table="h_wife_xml" dynamic-update="true"><id name="id"><column name="id" precision="4" scale="0" />&

34、lt;generator class="sequence"><param name="sequence">h_student_seq_xml</param></generator></id><property name="name" length="30" /><!- 这里的wife是xml_husband类中的属性名，表示这里的关联关系已经由husband的对象映射文件的wife属性上定义过了 -><one-to-one name

35、="husband" property-ref="wife" /> </class></hibernate-mapping>三、一对一单向主键关联（不重要）3.1 annotation方式3.1.1 类图图3-1 类关联关系图3.1.2 数据库表结构图3-2 数据库表结构图3.1.3 实体类package com.rongqq.hibernate3.annotation.entity;import java.math.bigdecimal;import javax.persistence.column;import java

36、x.persistence.entity;import javax.persistence.generatedvalue;import javax.persistence.generationtype;import javax.persistence.id;import javax.persistence.onetoone;import javax.persistence.primarykeyjoincolumn;import javax.persistence.sequencegenerator;entity(name="h_husband_")sequencegener

37、ator(name="husband_seq_gene", sequencename="husband_seq", allocationsize=1)public class husband private bigdecimal id;private string name;private wife wife;idcolumn(precision=4, scale=0)generatedvalue(strategy=generationtype.sequence, generator="husband_seq_gene")public

38、 bigdecimal getid() return id;column(length=30)public string getname() return name;onetooneprimarykeyjoincolumnpublic wife getwife() return wife;public void setid(bigdecimal id) this.id = id;public void setname(string name) = name;public void setwife(wife wife) this.wife = wife;package com

39、.rongqq.hibernate3.annotation.entity;import java.math.bigdecimal;import javax.persistence.column;import javax.persistence.entity;import javax.persistence.generatedvalue;import javax.persistence.generationtype;import javax.persistence.id;import javax.persistence.sequencegenerator;entity(name="h_

40、wife_")sequencegenerator(name="wife_seq_gene", sequencename="wife_seq")public class wife private bigdecimal id;private string name;idcolumn(precision=4)generatedvalue(strategy=generationtype.sequence, generator="wife_seq_gene")public bigdecimal getid() return id;pu

41、blic void setid(bigdecimal id) this.id = id;column(length=30)public string getname() return name;public void setname(string name) = name;注：只生成了表，但是没有外键约束，具体实现还需要查找3.2 xml方式3.2.1 类图图3-3 类关联关系图3.2.2 数据库表结构图3-4 数据库表结构图3.2.3 实体类package com.rongqq.hibernate3.xml.entity;import java.math.bigdecim

42、al;public class xml_husband private bigdecimal id;private string name;private xml_wife wife;public bigdecimal getid() return id;public string getname() return name;public xml_wife getwife() return wife;public void setid(bigdecimal id) this.id = id;public void setname(string name) = name;pu

43、blic void setwife(xml_wife wife) this.wife = wife;package com.rongqq.hibernate3.xml.entity;import java.math.bigdecimal;import com.rongqq.hibernate3.annotation.entity.husband;public class xml_wife private bigdecimal id;private string name;public bigdecimal getid() return id;public void setid(bigdecim

44、al id) this.id = id;public string getname() return name;public void setname(string name) = name;3.2.4 对象映射文件<?xml version="1.0"?><!doctype hibernate-mapping public "-/hibernate/hibernate mapping dtd 3.0/en" "<hibernate-mapping package="com.rongqq.h

45、ibernate3.xml.entity"><class name="xml_husband" table="h_husband_xml" dynamic-update="true"><id name="id" type="big_decimal"><column name="id" precision="4" scale="0" /><generator class="

46、;foreign"><!- 指明具体参考哪一个外键，因为一张表可能存在多个外键 -><param name="property">wife</param></generator></id><property name="name" length="30"></property><one-to-one name="wife" constrained="true"></one-to-

47、one> </class></hibernate-mapping><?xml version="1.0"?><!doctype hibernate-mapping public "-/hibernate/hibernate mapping dtd 3.0/en" "<hibernate-mapping package="com.rongqq.hibernate3.xml.entity"><class name="xml_wife" tabl

48、e="h_wife_xml" dynamic-update="true"><id name="id"><column name="id" precision="4" scale="0" /><generator class="sequence"><param name="sequence">h_student_seq_xml</param></generator&g

49、t;</id><property name="name" length="30" /> </class></hibernate-mapping>四、一对一双向主键关联（不重要）4.1 annotation方式4.1.1 类图图4-1 类关联关系图4.1.2 数据库表结构图4-2 数据库表结构图4.1.3 实体类package com.rongqq.hibernate3.annotation.entity;import java.math.bigdecimal;import javax.persistence

50、.column;import javax.persistence.entity;import javax.persistence.generatedvalue;import javax.persistence.generationtype;import javax.persistence.id;import javax.persistence.onetoone;import javax.persistence.primarykeyjoincolumn;import javax.persistence.sequencegenerator;entity(name="h_husband_&

51、quot;)sequencegenerator(name="husband_seq_gene", sequencename="husband_seq", allocationsize=1)public class husband private bigdecimal id;private string name;private wife wife;idcolumn(precision=4, scale=0)generatedvalue(strategy=generationtype.sequence, generator="husband_se

52、q_gene")public bigdecimal getid() return id;column(length=30)public string getname() return name;onetooneprimarykeyjoincolumnpublic wife getwife() return wife;public void setid(bigdecimal id) this.id = id;public void setname(string name) = name;public void setwife(wife wife) this.wife

53、 = wife;package com.rongqq.hibernate3.annotation.entity;import java.math.bigdecimal;import javax.persistence.column;import javax.persistence.entity;import javax.persistence.generatedvalue;import javax.persistence.generationtype;import javax.persistence.id;import javax.persistence.onetoone;import jav

54、ax.persistence.primarykeyjoincolumn;import javax.persistence.sequencegenerator;entity(name="h_wife_")sequencegenerator(name="wife_seq_gene", sequencename="wife_seq")public class wife private bigdecimal id;private string name;private husband husband;idcolumn(precision=4)

55、generatedvalue(strategy=generationtype.sequence, generator="wife_seq_gene")public bigdecimal getid() return id;public void setid(bigdecimal id) this.id = id;column(length=30)public string getname() return name;public void setname(string name) = name;onetooneprimarykeyjoincolumnpu

56、blic husband gethusband() return husband;public void sethusband(husband husband) this.husband = husband;注：同样不产生关联关系，具体实现待查3.2 xml方式4.2.1 类图图4-3 类关联关系图4.2.2 数据库表结构图4-4 数据库表结构图4.2.3 实体类package com.rongqq.hibernate3.xml.entity;import java.math.bigdecimal;public class xml_husband private bigdecimal id;p

57、rivate string name;private xml_wife wife;public bigdecimal getid() return id;public string getname() return name;public xml_wife getwife() return wife;public void setid(bigdecimal id) this.id = id;public void setname(string name) = name;public void setwife(xml_wife wife) this.wife = wife;p

58、ackage com.rongqq.hibernate3.xml.entity;import java.math.bigdecimal;public class xml_wife private bigdecimal id;private string name;private xml_husband husband;public bigdecimal getid() return id;public void setid(bigdecimal id) this.id = id;public string getname() return name;public void setname(st

59、ring name) = name;public xml_husband gethusband() return husband;public void sethusband(xml_husband husband) this.husband = husband;4.2.4 对象映射文件<?xml version="1.0"?><!doctype hibernate-mapping public "-/hibernate/hibernate mapping dtd 3.0/en" "<hibernate-mapping