//user实体。 
public classUser1 { 
 //用户编号。 
 private String id; 
 //名字。 
 private String name; 
 //密码。 
 private String password; 
 //创建日期。 
 private Date createTime; 
 //失效时间。 
 private Date expireTime; 
 public String getId() { 
 return id; 
 } 
// publicvoid setId(String id) { 
// this.id= id; 
// } 
 public String getName() { 
 return name; 
 } 
 public void setName(String name) { 
 this.name = name; 
 } 
 public String getPassword() { 
 return password; 
 } 
 public void setPassword(Stringpassword) { 
 this.password = password; 
 } 
 public Date getCreateTime() { 
 return createTime; 
 } 
 public void setCreateTime(DatecreateTime) { 
 this.createTime = createTime; 
 } 
 public Date getExpireTime() { 
 return expireTime; 
 } 
 public void setExpireTime(DateexpireTime) { 
 this.expireTime = expireTime; 
 } 
 } 

<hibernate-mapping package="com.bjpowernode.hibernate"> 
 <class name="User1" table="t_user1"> 
 <id name="id"column="user_id" length="32"access="field"> 
  <generator class="uuid" /> 
 </id> 
 <!-- 设置主键不能重复和不能为空的属性. --> 
 <property name="name" length="30"unique="true" not-null="true"/> 
 <property name="password"/> 
 <property name="createTime" type="date" column="create_time"/> 
 <property name="expireTime"/> 
 </class> 
</hibernate-mapping> 

<hibernate-mapping package="org.hibernate.auction"> 
 <class name="com.bjpowernode.hibernate.User" table="t_user" > 
 <id name="id"> 
  <generator class="native" /> 
 </id> 
 <property name="name"/> 
 <many-to-one name="group" column="groupid"cascade="save-update"></many-to-one> 
 </class> 
</hibernate-mapping> 

<hibernate-mapping package="org.hibernate.auction"> 
 <class name="com.bjpowernode.hibernate.Group" table="t_group"> 
 <id name="id"> 
  <generator class="native" /> 
 </id> 
 <property name="name"/> 
 </class> 
</hibernate-mapping> 

<class name="com.bjpowernode.hibernate.Person"table="t_person" > 
 <id name="id"> 
 <!-- 采用foreign生成策略，foreign会取得关联对象的标识 --> 
  <generator class="foreign" > 
  <!--property指的是关联对象。 --> 
  <param name="property">idCard</param> 
  </generator> 
 </id> 
 <property name="name"/> 
 <!-- 一对一关联映射,主键关联. --> 
 <!-- 
 one-to-one标签指示hibernate如何加载其关联对象,默认根据主键加载. 
 也就是拿到关系字段值,根据对端的主键来加载关联对象. 
 constrained="true",表示当前主键(Person的主键)还是一个外键 . 
 参照了对端的主键(IdCard的主键),也就是会生成外键约束语句. 
 --> 
 <one-to-one name="idCard" constrained="true"/> 
 </class> 
<hibernate-mapping package="org.hibernate.auction"> 
 
 <class name="com.bjpowernode.hibernate.IdCard" table="t_idCard" > 
 <id name="id"> 
  <generator class="native" /> 
 </id> 
 <property name="cardNo"/> 
 </class> 
</hibernate-mapping> 

<hibernate-mapping package="org.hibernate.auction"> 
 <class name="com.bjpowernode.hibernate.IdCard" table="t_idCard" > 
 <id name="id"> 
  <generator class="native" /> 
 </id> 
 <property name="cardNo"/> 
 <one-to-one name="person"/> 
 </class> 
</hibernate-mapping> 

<hibernate-mapping package="org.hibernate.auction"> 
 
 <class name="com.bjpowernode.hibernate.IdCard" table="t_idCard" > 
 <id name="id"> 
  <generator class="native" /> 
 </id> 
 <property name="cardNo"/> 
 </class> 
</hibernate-mapping> 

<hibernate-mapping package="org.hibernate.auction"> 
 <class name="com.bjpowernode.hibernate.Person" table="t_person" > 
 <id name="id"> 
 <!-- 采用foreign生成策略，foreign会取得关联对象的标识 --> 
  <generator class="native" /> 
 </id> 
 <property name="name"/> 
 <many-to-one name="idCard" unique="true"></many-to-one> 
 </class> 
</hibernate-mapping> 

<hibernate-mapping package="org.hibernate.auction"> 
 <class name="com.bjpowernode.hibernate.IdCard" table="t_idCard" > 
 <id name="id"> 
  <generator class="native" /> 
 </id> 
 <property name="cardNo"/> 
 <one-to-one name="person" property-ref="idCard"></one-to-one> 
 </class> 
.</hibernate-mapping> 

<class name="com.bjpowernode.hibernate.Person" table="t_person" > 
 <id name="id"> 
 <!-- 采用foreign生成策略，foreign会取得关联对象的标识 --> 
 <generator class="native" /> 
 </id> 
 <property name="name"/> 
 <many-to-one name="idCard" unique="true"></many-to-one> 
 </class> 

<class name="com.bjpowernode.hibernate.Classes" table="t_Classes" > 
 <id name="id"> 
  <generator class="native" /> 
 </id> 
 <property name="name"/> 
 <set name="students"> 
 <!-- 
  <keycolumn="classesid" not-null="true"/> 
 --> 
  <key column="classesid" /> 
  <one-to-many class="com.bjpowernode.hibernate.Student"/> 
 </set> 
 </class> 

<class name="com.bjpowernode.hibernate.Student" table="t_student" > 
 <id name="id"> 
 <generator class="native" /> 
 </id> 
 <property name="name"/> 
 </class> 

<class name="com.bjpowernode.hibernate.Classes" table="t_Classes" > 
 <id name="id"> 
  <generator class="native" /> 
 </id> 
 <property name="name"/> 
 <set name="students" inverse="true"> 
 <!-- 
  <keycolumn="classesid" not-null="true"/> 
 --> 
  <key column="classesid" /> 
  <one-to-many class="com.bjpowernode.hibernate.Student"/> 
 </set> 
 </class> 
<class name="com.bjpowernode.hibernate.Student" table="t_student" > 
 <id name="id"> 
  <generator class="native" /> 
 </id> 
 <property name="name"/> 
 <many-to-one name="classes"column="classesid"/> 
 </class> 

<class name="com.bjpowernode.hibernate.Role" table="t_role"> 
 <id name="id"> 
  <generator class="native" /> 
 </id> 
 <property name="name"/> 
 </class> 

<class name="com.bjpowernode.hibernate.User" table="t_user" > 
 <id name="id"> 
  <generator class="native" /> 
 </id> 
 <property name="name"/> 
  
 <set name="roles" table="t_user_role"> 
  <key column="user_id"/> 
  <many-to-many class="com.bjpowernode.hibernate.Role" column="role_id"/> 
 </set> 
 </class> 

<class name="com.bjpowernode.hibernate.Role" table="t_role"> 
 <id name="id"> 
 <generator class="native" /> 
 </id> 
 <property name="name"/> 
 <set name="users" table="t_user_role"> 
 <key column="role_id"/> 
 <many-to-many class="com.bjpowernode.hibernate.User" column="user_id"/> 
 </set> 
 </class> 

<class name="com.bjpowernode.hibernate.User"table="t_user" > 
 <id name="id"> 
  <generator class="native" /> 
 </id> 
 <property name="name"/> 
  
 <set name="roles" table="t_user_role"> 
  <key column="user_id"/> 
  <many-to-many class="com.bjpowernode.hibernate.Role" column="role_id"/> 
 </set> 
 </class>