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, generator=husband_seq_gene)public big

5、decimal 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(string name) = name;public void setwife(wife wife) thi

6、s.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 javax.persistence.id;import javax.persistence.sequencegener

7、ator;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.sequence, generator=wife_seq_gene)public bigdecimal getid() return id;public void setid(bigdeci

8、mal 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 com.rongqq.hibernate3.xml.entity;import java.math.bigdecimal;public class xml_husband private bigdecimal id;

9、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.wife = wife;

10、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(bigdecimal id) this.id = id;public string getname() return name;public void setname(string name) = name

11、;1.3.4 对象关系映射文件!doctype hibernate-mapping public -/hibernate/hibernate mapping dtd 3.0/enh_student_seq_xml !doctype hibernate-mapping public -/hibernate/hibernate mapping dtd 3.0/en h_student_seq_xml 1.4 hibernate配置文件!doctype hibernate-configuration public -/hibernate/hibernate configuration dtd 3.0

12、/en oracle.jdbc.driver.oracledriverjdbc:oracle:thin::1521:silencecnusercn8303061threadorg.hibernate.cache.nocacheprovidertruetrueorg.hibernate.dialect.oracle9dialect!-update-二、一对一双向外键关联2.1 annotation方式2.1.1 类图图2-1类关联关系图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

13、(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 bigdecimal getid() return id;column(len

14、gth=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(string name) = name;public void setwife(wife wife) this.wife = wife;entity(name=h_wife_)se

15、quencegenerator(name=wife_seq_gene, sequencename=wife_seq)public class wife private bigdecimal id;private string name;private husband husband;idcolumn(precision=4)generatedvalue(strategy=generationtype.sequence, generator=wife_seq_gene)public bigdecimal getid() return id;public void setid(bigdecimal

16、 id) this.id = id;column(length=30)public string getname() return name;public void setname(string name) = 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p

17、ackage 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)

18、this.id = 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;private xml_husband husband;public bigdecimal getid(

19、) return id;public void setid(bigdecimal id) this.id = id;public string getname() return name;public void 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!doctype hibernate-mapping p

20、ublic -/hibernate/hibernate mapping dtd 3.0/en h_student_seq_xml !doctype hibernate-mapping public -/hibernate/hibernate mapping dtd 3.0/en h_student_seq_xml 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 jav

21、a.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.primarykeyjoincolumn;import javax.persistence.seque

22、ncegenerator;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)generatedvalue(strategy=generationtype.sequence, generator=husband_se

23、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 = wif

24、e;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.sequencegenerator;entity(

25、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.sequence, generator=wife_seq_gene)public bigdecimal getid() return id;public void setid(bigdecimal id) this

26、.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.bigdecimal;public class xml_husband private

27、 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;public void setwife(xml_wife wife) th

28、is.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(bigdecimal id) this.id = id;public string g

29、etname() return name;public void setname(string name) = name;3.2.4 对象映射文件!doctype hibernate-mapping public -/hibernate/hibernate mapping dtd 3.0/en wife !doctype hibernate-mapping public -/hibernate/hibernate mapping dtd 3.0/en h_student_seq_xml 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

30、 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.column;import javax.persistence.entity;import javax.persistence.generatedvalue;import javax.persistence.generationtype;import javax.persistence.id;import javax

31、.persistence.onetoone;import javax.persistence.primarykeyjoincolumn;import javax.persistence.sequencegenerator;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;i

32、dcolumn(precision=4, scale=0)generatedvalue(strategy=generationtype.sequence, generator=husband_seq_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 = i

33、d;public void setname(string 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.persist

34、ence.generationtype;import javax.persistence.id;import javax.persistence.onetoone;import javax.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 s

35、tring name;private husband 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) thi

36、 = name;onetooneprimarykeyjoincolumnpublic 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;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) th