<hibernate-mapping>
<class name="org.qsm.Major" table="major">
<id name="id" type="java.lang.String">
<column name="id" length="2" />
<generator class="assigned" />
</id>
<property name="name" type="java.lang.String">
<column name="name" length="20" not-null="true" />
</property>
<property name="shortname" type="java.lang.String">
<column name="shortname" length="10" not-null="true" />
</property>
<property name="department" type="java.lang.String">
<column name="department" length="4" not-null="true" />
</property>
<set name="classeses" inverse="true">
<key>
<column name="majorid" length="2" not-null="true" />
</key>
<one-to-many class="org.qsm.Classes" />
</set>
</class>
</hibernate-mapping><hibernate-mapping>
<class name="org.qsm.Classes" table="classes">
<id name="id" type="java.lang.Integer">
<column name="id" />
<generator class="native" />
</id>
<many-to-one name="major" class="org.qsm.Major" fetch="select">
<column name="majorid" length="2" not-null="true" />
</many-to-one>
<property name="name" type="java.lang.String">
<column name="name" length="10" not-null="true" />
</property>
</class>
</hibernate-mapping>public class Major implements java.io.Serializable{
private static final long serialVersionUID=7049254736951558367L;
private String id;
private String name;
private String shortname;
private String department;
private Set classeses=new HashSet(0);
public String getId(){
return this.id;
}
public void setId(String id){
this.id=id;
}
public String getName(){
return this.name;
}
public void setName(String name){
this.name=name;
}
public String getShortname(){
return this.shortname;
}
public void setShortname(String shortname){
this.shortname=shortname;
}
public String getDepartment(){
return this.department;
}
public void setDepartment(String department){
this.department=department;
}
public Set getClasseses(){
return this.classeses;
}
public void setClasseses(Set classeses){
this.classeses=classeses;
}
}public class Classes implements java.io.Serializable{
private static final long serialVersionUID=6183334115113485272L;
private Integer id;
private Major major;
private String name;
public Integer getId(){
return this.id;
}
public void setId(Integer id){
this.id=id;
}
public Major getMajor(){
return this.major;
}
public void setMajor(Major major){
this.major=major;
}
public String getName(){
return this.name;
}
public void setName(String name){
this.name=name;
}
}//测试语句
Major m=new Major();
Classes c=new Classes();
m.setId("10");
m.setName("hhhhhh");
m.setShortname("dddddd");
m.setDepartment("00001");
c.setName("计科041");
c.setMajor(m);
m.getClasseses().add(c);
Session session=HibernateSessionFactory.getSession();
Transaction tran=this.session.beginTransaction();
session.save(m);
tran.commit();
session.close();
数据库脚本
CREATE TABLE `classes` (
`id` int(11) NOT NULL auto_increment,
`name` varchar(10) NOT NULL default '',
`majorid` varchar(2) NOT NULL default '',
PRIMARY KEY (`id`),
KEY `pk_majorid` (`majorid`),
CONSTRAINT `pk_majorid` FOREIGN KEY (`majorid`) REFERENCES `major` (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=gbk;CREATE TABLE `major` (
`id` varchar(2) NOT NULL default '',
`name` varchar(20) NOT NULL default '',
`shortname` varchar(10) NOT NULL default '',
`department` varchar(4) NOT NULL default '',
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=gbk;
<class name="org.qsm.Major" table="major">
<id name="id" type="java.lang.String">
<column name="id" length="2" />
<generator class="assigned" />
</id>
<property name="name" type="java.lang.String">
<column name="name" length="20" not-null="true" />
</property>
<property name="shortname" type="java.lang.String">
<column name="shortname" length="10" not-null="true" />
</property>
<property name="department" type="java.lang.String">
<column name="department" length="4" not-null="true" />
</property>
<set name="classeses" inverse="true">
<key>
<column name="majorid" length="2" not-null="true" />
</key>
<one-to-many class="org.qsm.Classes" />
</set>
</class>
</hibernate-mapping><hibernate-mapping>
<class name="org.qsm.Classes" table="classes">
<id name="id" type="java.lang.Integer">
<column name="id" />
<generator class="native" />
</id>
<many-to-one name="major" class="org.qsm.Major" fetch="select">
<column name="majorid" length="2" not-null="true" />
</many-to-one>
<property name="name" type="java.lang.String">
<column name="name" length="10" not-null="true" />
</property>
</class>
</hibernate-mapping>public class Major implements java.io.Serializable{
private static final long serialVersionUID=7049254736951558367L;
private String id;
private String name;
private String shortname;
private String department;
private Set classeses=new HashSet(0);
public String getId(){
return this.id;
}
public void setId(String id){
this.id=id;
}
public String getName(){
return this.name;
}
public void setName(String name){
this.name=name;
}
public String getShortname(){
return this.shortname;
}
public void setShortname(String shortname){
this.shortname=shortname;
}
public String getDepartment(){
return this.department;
}
public void setDepartment(String department){
this.department=department;
}
public Set getClasseses(){
return this.classeses;
}
public void setClasseses(Set classeses){
this.classeses=classeses;
}
}public class Classes implements java.io.Serializable{
private static final long serialVersionUID=6183334115113485272L;
private Integer id;
private Major major;
private String name;
public Integer getId(){
return this.id;
}
public void setId(Integer id){
this.id=id;
}
public Major getMajor(){
return this.major;
}
public void setMajor(Major major){
this.major=major;
}
public String getName(){
return this.name;
}
public void setName(String name){
this.name=name;
}
}//测试语句
Major m=new Major();
Classes c=new Classes();
m.setId("10");
m.setName("hhhhhh");
m.setShortname("dddddd");
m.setDepartment("00001");
c.setName("计科041");
c.setMajor(m);
m.getClasseses().add(c);
Session session=HibernateSessionFactory.getSession();
Transaction tran=this.session.beginTransaction();
session.save(m);
tran.commit();
session.close();
数据库脚本
CREATE TABLE `classes` (
`id` int(11) NOT NULL auto_increment,
`name` varchar(10) NOT NULL default '',
`majorid` varchar(2) NOT NULL default '',
PRIMARY KEY (`id`),
KEY `pk_majorid` (`majorid`),
CONSTRAINT `pk_majorid` FOREIGN KEY (`majorid`) REFERENCES `major` (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=gbk;CREATE TABLE `major` (
`id` varchar(2) NOT NULL default '',
`name` varchar(20) NOT NULL default '',
`shortname` varchar(10) NOT NULL default '',
`department` varchar(4) NOT NULL default '',
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=gbk;
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但这个不是应该向两个表中插入数据吗,为什么major的表数据插进去了,而classes表中的数据没插进去呢?