//例一public static AdminInfo getLoginAdminCriteria(String adminName,String password){try{Session s=HibUtil.getSession();Criteria c=s.createCriteria(AdminInfo.class);c.add(Restrictions.eq("adminName", adminName));c.add(Restrictions.eq("password", password));return (AdminInfo) c.uniqueResult();}finally{HibUtil.closeSession();}}

//例子  Criteria c=s.createCriteria(AdminInfo.class);// 查询 id在 10 到 30 之间的用户c.add(Restrictions.between("id",10,30)).list();//查询 adminName 在 张三,李四,王五之间的 String [] names={"张三","李四","王五"};  //这里也可以用集合 只要是从Collection派生的都可以c.add(Restrictions.in("userName",names)).list();//查询 note为空的用户c.add(Restrictions.isNull("note")).list();//查询年龄为空,或名字为admin的  c.add(Restrictions.or(Restrictions.eq("adminName", "admin"),Restrictions.isNull("age")));

 //使用 QBC实现动态查询(以前的例子)public List<AdminInfo> getAdminList(String adminName,String password,String note) {String sql="select * from adminInfo where 1=1 ";if(adminName!=null){sql+=" and adminName='"+addminName+"'";}if(password!=null){sql+=" and adminName='"+password+"'";}if(note!=null){sql+=" and adminName='"+note+"'";}}

 //上例使用 QBCpublic static List<AdminInfo> getLoginAdminList(String adminName,String password,String note){try {Session s=HibUtil.getSession();Criteria c=s.createCriteria(AdminInfo.class);if(adminName!=null){c.add(Restrictions.eq("adminName", adminName));}if(password!=null){c.add(Restrictions.eq("password", password));}if(note!=null){c.add(Restrictions.eq("note", note));}return c.list();}finally{HibUtil.closeSession();}}//官方推荐使用HQL

<id name="id" type="java.lang.Integer"><column name="id" /><generator class="hilo" ><param name="table">t_key</param><param name="column">f_nextval</param><param name="max_lo">100</param></generator></id>

 <id name="id" ><column name="id" /><generator class="uuid" />
</id>//附 用java程序生成uuid => UUID.randomUUID().toString() c6204dc1-b9b6-40a9-a03a-a35ab6e6adc

//对象模型 //尼姑public class NiGu {private int id;private String fahao;private NiGuAn niguan; // 用的是NiGuAn 对象 这样就建立起了一对多的关联
                }//尼姑庵public class NiGuAn {private int id;private String name;}

//映射文件 (NiGuAn.hbm.xml)<Hibernate-mapping><class name="cat.beans.NiGuAn" ><id name="id"><column name="id" /><generator class="native" />   </id><property name="name" /></class></Hibernate-mapping>NiGu.hbm.xml<Hibernate-mapping><class name="cat.beans.NiGu" ><id name="id"><column name="id" /><generator class="native" />   </id><property name="fahao" /><many-to-one name="niguan" column="niguan_id"  />    //让它生成的外键这列的名字叫  niguan_id</class></Hibernate-mapping>

//添加的方法public static void add(){try{NiGuAn niguan= new NiGuAn();niguan.setName("普渡寺");NiGu nigu=new NiGu();nigu.setFahao("灭绝师太");//建立起两对象模型的关联
                            nigu.setNiguan(niguan);Session s=HibUtil.getSession();Transaction tx=s.beginTransaction();s.save(niguan);  //先存的是尼姑庵
                            s.save(nigu);tx.commit();}finally{HibUtil.closeSession();}    }

//查询 public static void main(String[] args) {NiGu nigu=searchNiGu();System.out.println(nigu.getFahao()); //可以输出结果/* 被关联的对象,查询的时候默认是使用懒加载的  如果下面的代码中没有Hibernate.initialize(nigu.getNiguan()); 这句,将引发 could not initialize proxy - no Session  */System.out.println(nigu.getNiguan().getName()); }//关于查询的例二public static NiGu searchNiGu(){try{Session s=HibUtil.getSession();NiGu nigu= (NiGu) s.get(NiGu.class,1 );Hibernate.initialize(nigu.getNiguan()); //通知Hibernate 直接把关联的数据查询出来return nigu;}finally{HibUtil.closeSession();}}//关于查询的例一public static void search(){try{Session s=HibUtil.getSession();NiGu nigu= (NiGu) s.get(NiGu.class,1 );System.out.println(nigu.getFahao());System.out.println(nigu.getNiguan().getName());  //能否把关联的数据查出来 ?
                        }finally{HibUtil.closeSession();}}

//对象模型
//尼姑庵
public class NiGuAn {private int id;private String name;private Set<NiGu>niguList;  //一对多关联}

//映射文件(NiGuAn.hbm.xml)<Hibernate-mapping><class name="cat.beans.NiGuAn" ><id name="id"><column name="id" /><generator class="native" />   </id><property name="name" /><set name="niguList"><key column="niguan_id" /><one-to-many class="NiGu" /></set>   </class></Hibernate-mapping>

//映射文件 (NiGuAn.hbm.xml)<Hibernate-mapping><class name="cat.beans.NiGuAn" ><id name="id"><column name="id" /><generator class="native" />   </id><property name="name" /></class></Hibernate-mapping>NiGu.hbm.xml<Hibernate-mapping><class name="cat.beans.NiGu" ><id name="id"><column name="id" /><generator class="native" />   </id><property name="fahao" /><many-to-one name="niguan" column="niguan_id"  />    //让它生成的外键这列的名字叫  niguan_id</class></Hibernate-mapping>

//添加的方法              public static  void add(){NiGuAn niguan=new NiGuAn();niguan.setName("少林寺");NiGu nigu1=new NiGu();nigu1.setNiguan(niguan);nigu1.setFahao("空闻");NiGu nigu2=new NiGu();nigu2.setNiguan(niguan);nigu2.setFahao("玄苦");try{Session s=HibUtil.getSession();Transaction tx=s.beginTransaction();/*Set<NiGu> niguList=new HashSet<NiGu>();niguList.add(nigu1);niguList.add(nigu2);niguan.setNiguList(niguList);  */s.save(niguan);s.save(nigu1);s.save(nigu2);tx.commit();}finally{HibUtil.closeSession();}public static void main(String[] args) {// add(); NiGuAn niguan= search2();System.out.println(niguan.getName());for(NiGu n:niguan.getNiguList()){System.out.println(n.getFahao());}}public static NiGuAn  search2(){try{Session s=HibUtil.getSession();NiGuAn  niguan= (NiGuAn) s.get(NiGuAn.class, 4);Hibernate.initialize(niguan.getNiguList());return niguan;}finally{HibUtil.closeSession();}}public static void search(){try{Session s=HibUtil.getSession();NiGuAn niguan =(NiGuAn) s.get(NiGuAn.class, 4);System.out.println(niguan.getName());Set<NiGu> niguList= niguan.getNiguList();for (NiGu n:niguList) {System.out.println(n.getFahao());}}finally{HibUtil.closeSession();}}

 <!-- 把它换成下面的配置即可<set name="niguList"><key column="niguan_id" /><one-to-many class="NiGu" /></set>   --><list name="niguList"><key column="niguan_id" /><index column="indexNo" /><one-to-many class="NiGu" /></list>

//如果对象模型还是使用list,但关系模型中不要排序列,可以用bag 来配置
<bag name="niguList"><key column="niguan_id" /><one-to-many class="NiGu" />
</bag> 

 //添加方法  public static  void add(){NiGuAn niguan=new NiGuAn();niguan.setName("九峰寺");NiGu nigu1=new NiGu();nigu1.setNiguan(niguan);nigu1.setFahao("空空大师");NiGu nigu2=new NiGu();nigu2.setNiguan(niguan);nigu2.setFahao("玄玄");NiGu nigu3=new NiGu();nigu3.setNiguan(niguan);nigu3.setFahao("灭绝");try{Session s=HibUtil.getSession();Transaction tx=s.beginTransaction();List<NiGu> niguList=new ArrayList<NiGu>();niguList.add(nigu1);niguList.add(nigu2);niguList.add(nigu3);niguan.setNiguList(niguList);  s.save(niguan);s.save(nigu1);s.save(nigu2);s.save(nigu3);tx.commit();//说明/*List<NiGu> nlist=niguan.getNiguList();  没有问题ArrayList<NiGu> nlist=(ArrayList<NiGu> )niguan.getNiguList(); 将出现异常 ClassCastException: org.Hibernate.collection.PersistentBag cannot be cast to java.util.ArrayList        */}finally{HibUtil.closeSession()

//对象模型
public class Student {private int id;private String stuName;private Set<Teacher> teacherList;}public class Teacher {private int id;private String teacherName;private Set<Student> stuList;  //建立关联}

//Teacher.hbm.xml    <Hibernate-mapping package="cat.beans"><class name="Teacher" ><id name="id"><column name="id" /><generator class="native" />   </id><property name="teacherName" /><set name="stuList" table= "teacher_student"  lazy="false">  //指明不要懒加载<key column="teacher_id" /> <!-- 将来根据 teacher_id列表中间表找学生 --><many-to-many class="Student" column="stucent_id" /></set>   </class></Hibernate-mapping>

//Student.hbm.xml <Hibernate-mapping package="cat.beans"><class name="Student" ><id name="id"><column name="id" /><generator class="native" />   </id><property name="stuName" /><set name="teacherList" table= "teacher_student"><key column="student_id" /> <many-to-many class="Teacher" column="teacher_id" /></set>   </class></Hibernate-mapping>

//测试public static void main(String[] args) {Teacher t=search();System.out.println(t.getTeacherName());for(Student stu:t.getStuList()){System.out.println(stu.getStuName());}}public static Teacher search(){return (Teacher) HibUtil.get(Teacher.class, 1);}public static void add(){//老师的数据Teacher t1=new Teacher();t1.setTeacherName("成秀秀");Teacher t2=new Teacher();t2.setTeacherName("史老师");Set<Teacher> teacherList=new HashSet<Teacher>();teacherList.add(t1);teacherList.add(t2);//学生的数据Student stu1=new Student();stu1.setStuName("刘冰");Student stu2=new Student();stu2.setStuName("侯晨阳");Set<Student> studentList=new HashSet<Student>();studentList.add(stu1);studentList.add(stu2);t1.setStuList(studentList); //建立起老师和学生的关联
                t2.setStuList(studentList); ///有没有必要////stu1.setTeacherList(teacherList);//stu2.setTeacherList(teacherList);//
                Session s=HibUtil.getSession();Transaction tx=s.beginTransaction();s.save(t1);s.save(t2);s.save(stu1);s.save(stu2);tx.commit();s.close();}