t3单向多对多

<?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.tudou.hibernates.e2.Student" table="tb_student"> <id name="stu_id" type="java.lang.Integer" column="stu_id"> <generator class="native"> </generator> </id> <property name="stuName" /> <set name="course" table="stu_course" cascade="save-update"> <key> <column name="stu_id"></column> </key> <many-to-many class="com.tudou.hibernates.e2.Course" column="cid" /> </set> </class> </hibernate-mapping>

<?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.tudou.hibernates.e2.Course" table="tb_course"> <id name="cid" type="java.lang.Integer" column="cid"> <generator class="native" /> </id> <property name="courseName"></property> </class> </hibernate-mapping>
package com.tudou.hibernates.e2; import java.util.HashSet; import java.util.Set; public class Course { private int cid; private String courseName; public int getCid() { return cid; } public void setCid(int cid) { this.cid = cid; } public String getCourseName() { return courseName; } public void setCourseName(String courseName) { this.courseName = courseName; } }
package com.tudou.hibernates.e2; import java.util.HashSet; import java.util.Set; public class Student { private int stu_id; private String stuName; private Set<Course> course = new HashSet<Course>(); public int getStu_id() { return stu_id; } public void setStu_id(int stuId) { stu_id = stuId; } public String getStuName() { return stuName; } public void setStuName(String stuName) { this.stuName = stuName; } public Set<Course> getCourse() { return course; } public void setCourse(Set<Course> course) { this.course = course; } }