package com.bjsxt.hibernate;
public class Student {
private int id;
private String name;
private int age;
private String sex;
private boolean good;
public boolean isGood() {
return good;
}
public void setGood(boolean good) {
this.good = good;
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
public String getSex() {
return sex;
}
public void setSex(String sex) {
this.sex = sex;
}
}
@H_301_0@2.Student.hbm.xml中：
<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping>
<class name="com.bjsxt.hibernate.Student" dynamic-update="true">
<id name="id">
<generator class="native"></generator>
</id>
<property name="name"></property>
<property name="age" />
<property name="sex" />
<property name="good" type="yes_no"></property>
</class>
</hibernate-mapping>
@H_301_0@3、建StuIdCard.java
package com.bjsxt.hibernate;
public class StuIdCard {
private int id;
private String num;
private Student student;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getNum() {
return num;
}
public void setNum(String num) {
this.num = num;
}
public Student getStudent() {
return student;
}
public void setStudent(Student student) {
this.student = student;
}
}
@H_301_0@4、建相应的xml文件：StuIdCard.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">
<hibernate-mapping>
<class name="com.bjsxt.hibernate.StuIdCard">
<id name="id">
<generator class="native"></generator>
</id>
<property name="num"/>
<many-to-one name="student" column="studentId" unique="true"></many-to-one>
</class>
</hibernate-mapping>
@H_301_0@5、<many-to-one name="student" column="studentId" unique="true"></many-to-one> @H_301_0@这句话意思为多对一，如果站在StuIdCard的方面，many-to-one意味多个学生证对应一个学生，因不是一对一，所以后面加了个unique="true"即保证IdCard的唯一，这样就变成一对一的单向关联了，column="studentId"即用column来定义用哪个字段作为外键关联 的字段。 @H_301_0@6、在hibernate.cfg.xml中加入：
<mapping resource="com/bjsxt/hibernate/Student.hbm.xml"/>
<mapping resource="com/bjsxt/hibernate/StuIdCard.hbm.xml"/> 原文链接：https://www.f2er.com/xml/298222.html