一对一单向主键关联（不重要）
a) @PrimaryKey JoinColumn注解实现 Husband 和 Wife--以Husband为主为例
Husband:
1 package com.bjsxt.hibernate; 2 3 import javax.persistence.Entity; 4 import javax.persistence.GeneratedValue; 5 import javax.persistence.Id; 6 import javax.persistence.OneToOne; 7 import javax.persistence.PrimaryKeyJoinColumn; 8 9 @Entity10 public class Husband {11 12 private Integer id;13 14 private String name;15 16 private Wife wife;17 18 @Id19 @GeneratedValue20 public Integer getId() {21 return id;22 }23 24 public String getName() {25 return name;26 }27 28 @OneToOne//一对一的关系29 @PrimaryKeyJoinColumn30 public Wife getWife() {31 return wife;32 }33 34 public void setId(Integer id) {35 this.id = id;36 }37 38 public void setName(String name) {39 this.name = name;40 }41 42 public void setWife(Wife wife) {43 this.wife = wife;44 }45 } Wife
1 package com.bjsxt.hibernate; 2 3 import javax.persistence.Entity; 4 import javax.persistence.GeneratedValue; 5 import javax.persistence.Id; 6 7 @Entity 8 public class Wife { 9 private Integer id;10 11 private String name;12 13 @Id14 @GeneratedValue15 public Integer getId() {16 return id;17 }18 19 public void setId(Integer id) {20 this.id = id;21 }22 23 public String getName() {24 return name;25 }26 27 public void setName(String name) {28 this.name = name;29 }30 31 } 
XML 实现
以 Student 和 StudentIdCard(学生证) 为例，Student 为主导
Student
1 package com.bjsxt.hibernate; 2 3 public class Student { 4 5 private Integer id; 6 7 private String name; 8 9 private Integer age;10 11 private String sex;12 13 private boolean good;14 15 private StudentIdCard studentIdCard;16 17 public Integer getId() {18 return id;19 }20 21 public void setId(Integer id) {22 this.id = id;23 }24 25 public String getName() {26 return name;27 }28 29 public void setName(String name) {30 this.name = name;31 }32 33 public Integer getAge() {34 return age;35 }36 37 public void setAge(Integer age) {38 this.age = age;39 }40 41 public String getSex() {42 return sex;43 }44 45 public void setSex(String sex) {46 this.sex = sex;47 }48 49 public boolean isGood() {50 return good;51 }52 53 public void setGood(boolean good) {54 this.good = good;55 }56 57 public StudentIdCard getStudentIdCard() {58 return studentIdCard;59 }60 61 public void setStudentIdCard(StudentIdCard studentIdCard) {62 this.studentIdCard = studentIdCard;63 }64 65 } Student.hbm.xml 设置主键生成策略为 foreign，参数为 studentIdCard，constrained="true"
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StudentIdCard
1 package com.bjsxt.hibernate; 2 3 public class StudentIdCard { 4 5 private Integer id; 6 7 private String num; 8 9 public Integer getId() {10 return id;11 }12 13 public void setId(Integer id) {14 this.id = id;15 }16 17 public String getNum() {18 return num;19 }20 21 public void setNum(String num) {22 this.num = num;23 }24 25 } StudentIdCard.hbm.xml
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所需jar包链接: 密码: p1qh
代码链接: 密码: mhrf
4. 一对一双向主键关联（不重要）Annotation 配置
Husband:
1 package com.bjsxt.hibernate; 2 3 import javax.persistence.Entity; 4 import javax.persistence.GeneratedValue; 5 import javax.persistence.Id; 6 import javax.persistence.OneToOne; 7 import javax.persistence.PrimaryKeyJoinColumn; 8 9 @Entity10 public class Husband {11 12 private Integer id;13 14 private String name;15 16 private Wife wife;17 18 @Id19 @GeneratedValue20 public Integer getId() {21 return id;22 }23 24 public String getName() {25 return name;26 }27 28 @OneToOne//一对一的关系29 @PrimaryKeyJoinColumn30 public Wife getWife() {31 return wife;32 }33 34 public void setId(Integer id) {35 this.id = id;36 }37 38 public void setName(String name) {39 this.name = name;40 }41 42 public void setWife(Wife wife) {43 this.wife = wife;44 }45 } Wife:
1 package com.bjsxt.hibernate; 2 3 import javax.persistence.Entity; 4 import javax.persistence.GeneratedValue; 5 import javax.persistence.Id; 6 import javax.persistence.OneToOne; 7 import javax.persistence.PrimaryKeyJoinColumn; 8 9 @Entity10 public class Wife {11 12 private Integer id;13 14 private String name;15 16 private Husband husband;17 18 @Id19 @GeneratedValue20 public Integer getId() {21 return id;22 }23 24 public void setId(Integer id) {25 this.id = id;26 }27 28 public String getName() {29 return name;30 }31 32 public void setName(String name) {33 this.name = name;34 }35 36 @OneToOne37 @PrimaryKeyJoinColumn38 public Husband getHusband() {39 return husband;40 }41 42 public void setHusband(Husband husband) {43 this.husband = husband;44 }45 46 } 
如上图所示，并没有生成对应的外键。Annotation 在这个版本有bug，别用。
XML 配置：
Student
1 package com.bjsxt.hibernate; 2 3 public class Student { 4 5 private Integer id; 6 7 private String name; 8 9 private Integer age;10 11 private String sex;12 13 private boolean good;14 15 private StudentIdCard studentIdCard;16 17 public Integer getId() {18 return id;19 }20 21 public void setId(Integer id) {22 this.id = id;23 }24 25 public String getName() {26 return name;27 }28 29 public void setName(String name) {30 this.name = name;31 }32 33 public Integer getAge() {34 return age;35 }36 37 public void setAge(Integer age) {38 this.age = age;39 }40 41 public String getSex() {42 return sex;43 }44 45 public void setSex(String sex) {46 this.sex = sex;47 }48 49 public boolean isGood() {50 return good;51 }52 53 public void setGood(boolean good) {54 this.good = good;55 }56 57 public StudentIdCard getStudentIdCard() {58 return studentIdCard;59 }60 61 public void setStudentIdCard(StudentIdCard studentIdCard) {62 this.studentIdCard = studentIdCard;63 }64 65 } Student.hbm.xml
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StudentIdCard
1 package com.bjsxt.hibernate; 2 3 public class StudentIdCard { 4 5 private Integer id; 6 7 private String num; 8 9 private Student student;10 11 public Integer getId() {12 return id;13 }14 15 public void setId(Integer id) {16 this.id = id;17 }18 19 public String getNum() {20 return num;21 }22 23 public void setNum(String num) {24 this.num = num;25 }26 27 public Student getStudent() {28 return student;29 }30 31 public void setStudent(Student student) {32 this.student = student;33 }34 35 } StudentIdCard.hbm.xml
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所需jar包链接: 密码: p1qh
代码链接: 密码: i8d5