package domain;import java.util.HashSet;
import java.util.Set;//客户实体
public class Customer {private Long cust_id;private String cust_name;private String cust_source;private String cust_industry;private String cust_level;private String cust_linkman;private String cust_phone;private String cust_mobile;//使用set集合,表达一对多关系private Set<LinkMan> linkMens = new HashSet<LinkMan>();public Set<LinkMan> getLinkMens() {return linkMens;}public void setLinkMens(Set<LinkMan> linkMens) {this.linkMens = linkMens;}public Long getCust_id() {return cust_id;}public void setCust_id(Long cust_id) {this.cust_id = cust_id;}public String getCust_name() {return cust_name;}public void setCust_name(String cust_name) {this.cust_name = cust_name;}public String getCust_source() {return cust_source;}public void setCust_source(String cust_source) {this.cust_source = cust_source;}public String getCust_industry() {return cust_industry;}public void setCust_industry(String cust_industry) {this.cust_industry = cust_industry;}public String getCust_level() {return cust_level;}public void setCust_level(String cust_level) {this.cust_level = cust_level;}public String getCust_linkman() {return cust_linkman;}public void setCust_linkman(String cust_linkman) {this.cust_linkman = cust_linkman;}public String getCust_phone() {return cust_phone;}public void setCust_phone(String cust_phone) {this.cust_phone = cust_phone;}public String getCust_mobile() {return cust_mobile;}public void setCust_mobile(String cust_mobile) {this.cust_mobile = cust_mobile;}@Overridepublic String toString() {return "Customer [cust_id=" + cust_id + ", cust_name=" + cust_name + "]";}
}

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package utils;import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;public class HibernateUtils {private static SessionFactory sf;static{//1 创建,调用空参构造Configuration conf = new Configuration().configure();//2 根据配置信息,创建 SessionFactory对象sf = conf.buildSessionFactory();}//获得session => 获得全新sessionpublic static Session openSession(){//3 获得sessionSession session = sf.openSession();return session;}//获得session => 获得与线程绑定的sessionpublic static Session getCurrentSession(){//3 获得sessionSession session = sf.getCurrentSession();return session;}
}

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package criteria;import java.util.List;import org.hibernate.Criteria;
import org.hibernate.Session;
import org.hibernate.Transaction;
import org.hibernate.criterion.Order;
import org.hibernate.criterion.Projections;
import org.hibernate.criterion.Restrictions;
import org.junit.Test;import domain.Customer;
import utils.HibernateUtils;//学习Criteria语法
public class Demo {@Test//基本语法public void fun1(){Session session = HibernateUtils.openSession();Transaction tx = session.beginTransaction();//----------------------------------------------------
        Criteria c = session.createCriteria(Customer.class);List<Customer> list = c.list();System.out.println(list);//----------------------------------------------------
        tx.commit();session.close();}@Test//条件语法// >                 gt// >=                ge// <                lt// <=                le// ==                eq// !=                ne// in                in// between and        between// like             like// is not null         isNotNull// is null            isNull// or                or// and                andpublic void fun2(){Session session = HibernateUtils.openSession();Transaction tx = session.beginTransaction();//----------------------------------------------------
        Criteria c = session.createCriteria(Customer.class);//        c.add(Restrictions.idEq(2l));c.add(Restrictions.eq("cust_id",2l));List<Customer> list = c.list();System.out.println(list);//----------------------------------------------------
        tx.commit();session.close();}@Test//分页语法 - 与HQL一样public void fun3(){Session session = HibernateUtils.openSession();Transaction tx = session.beginTransaction();//----------------------------------------------------
        Criteria c = session.createCriteria(Customer.class);//limit ?,? c.setFirstResult(0);c.setMaxResults(2);List<Customer> list = c.list();System.out.println(list);//----------------------------------------------------
        tx.commit();session.close();}@Test//排序语法 public void fun4(){Session session = HibernateUtils.openSession();Transaction tx = session.beginTransaction();//----------------------------------------------------
        Criteria c = session.createCriteria(Customer.class);c.addOrder(Order.asc("cust_id"));//升序//c.addOrder(Order.desc("cust_id"));降序
        List<Customer> list = c.list();System.out.println(list);//----------------------------------------------------
        tx.commit();session.close();}@Test//统计语法 public void fun5(){Session session = HibernateUtils.openSession();Transaction tx = session.beginTransaction();//----------------------------------------------------
        Criteria c = session.createCriteria(Customer.class);//设置查询目标（聚合函数）
        c.setProjection(Projections.rowCount());List list = c.list();System.out.println(list);//----------------------------------------------------
        tx.commit();session.close();}}

package criteria;import java.util.List;import org.hibernate.Criteria;
import org.hibernate.Session;
import org.hibernate.Transaction;
import org.hibernate.criterion.DetachedCriteria;
import org.hibernate.criterion.Order;
import org.hibernate.criterion.Projections;
import org.hibernate.criterion.Restrictions;
import org.junit.Test;import domain.Customer;
import utils.HibernateUtils;//学习离线Criteria
public class Demo2 {@Testpublic void fun1(){//Service/web层DetachedCriteria dc  = DetachedCriteria.forClass(Customer.class);dc.add(Restrictions.idEq(5l));//拼装条件(全部与普通Criteria一致)//----------------------------------------------------Session session = HibernateUtils.openSession();Transaction tx = session.beginTransaction();//----------------------------------------------------//Dao层Criteria c = dc.getExecutableCriteria(session);List list = c.list();System.out.println(list);//----------------------------------------------------
        tx.commit();session.close();}}