<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd" >
<hibernate-mapping package="classweb.model.po">
<class
name="Users"
table="USERS"
>
<meta attribute="sync-DAO">false</meta>
<composite-id name="id" class="UsersPK">
<key-property
name="name"
column="NAME"
type="string"
/>
<key-property
name="tel"
column="TEL"
type="string"
/>
</composite-id>
<property
name="age"
column="AGE"
type="string"
not-null="false"
/>
</class>
</hibernate-mapping>
以下代码生成一个Users对象,并保存. Session s = HibernateUtil.currentSession(); Transaction t = s.beginTransaction(); UsersPK usersPK = new UsersPK(); usersPK.setName(1); usersPK.setTel(4); Users user = new Users(); user.setAge("19"); user.setId(usersPK ); s.save(user); t.commit(); HibernateUtil.closeSession(); System.out.println("insert success!"); 更新. Session s = HibernateUtil.currentSession(); Transaction t = s.beginTransaction(); UsersPK usersPK = new UsersPK(); usersPK.setDbid(1); usersPK.setRowUID(4); Users user = (Users)s.load(Users.class, usersPK); user.setAge("20"); s.update(user); t.commit(); HibernateUtil.closeSession(); System.out.println("update success!"); 删除. Session s = HibernateUtil.currentSession(); Transaction t = s.beginTransaction(); UsersPK usersPK = new UsersPK(); usersPK.setDbid(1); usersPK.setRowUID(4); Users user = (Users)s.load(Users.class, usersPK); s.delete(user); t.commit(); HibernateUtil.closeSession(); System.out.println("delete success!"); 最后讲select 如果对复合主键中的一个主键进行查询,必须 Session s = HibernateUtil.currentSession(); Criteria c = s.createCriteria(Users.class); c.add(Restrictions.eq("id.name", "levi")); List list = c.list(); Iterator iter = list.iterator(); while (iter.hasNext()) { Users item = (Users) iter.next(); System.out.println("name:" + item.getId().getName()); System.out.println("tel;" + item.getId().getTel()); System.out.println("age:" + item.getAge()); } HibernateUtil.closeSession(); System.out.println("select success!");