Hibernate4.1.3

原文：http://1194867672-qq-com.iteye.com/blog/1522906

jar包：

jstl-1.2.jar

ojdbc14.jar

junit-4.4.jar

jboss-loggin-3.1.0.GA.jar

dom4j-1.6.1.jar

xercesImpl.jar

hibernate-c3p0-4.1.2.Final.jar

c3p0-0.9.12.jar

jta.jar

hibernate-ehcache-4.0.0.CR6.jar

ehcache-core-2.6.6.jar

log4j-1.2.15.jar

slf4-log4j12-1.7.2.jar

antlr-2.7.7.jar

hibernate-commons-annotations-4.0.1.Final.jar

hibernate-core-4.1.3.Final.jar

hibernate-jpa-2.0-api-1.0.0.Final.jar

javassist-3.15.0-GA.jar

slf4j-api-1.7.2.jar

 

 hibernate.cfg.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC
		"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
		"http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
	<session-factory>

		<property name="hibernate.connection.driver_class">oracle.jdbc.driver.OracleDriver</property>
		<property name="hibernate.connection.url">jdbc:oracle:thin:@10.165.8.65:1521:UTF8</property>
		<property name="hibernate.connection.username">spmsadmin</property>
		<property name="hibernate.connection.password">spmsadmin</property>

		<property name="hibernate.dialect">org.hibernate.dialect.Oracle10gDialect</property>

		<property name="hibernate.show_sql">true</property>
		<property name="hibernate.format_sql">true</property>

		<property name="hibernate.hbm2ddl.auto">none</property>

		<property name="hibernate.jdbc.fetch_size">100</property>
		<property name="hibernate.jdbc.batch_size">30</property>

		<!-- 配置二级缓存 -->
	 	<property name="hibernate.cache.use_second_level_cache">true</property>
	 	<property name="hibernate.cache.use_query_cache">true</property>
		<!-- Hibernate4 这里和Hibernate3不一样 要特别注意！！！-->
	 	<property name="hibernate.cache.region.factory_class">org.hibernate.cache.EhCacheRegionFactory</property> 
		<!-- Hibernate3 -->
		<!-- <property name="hibernate.cache.provider_class">org.hibernate.cache.EhCacheProvider</property> -->
		
		<!-- 配置C3P0 -->
		<property name="hibernate.connection.provider_class">org.hibernate.connection.C3P0ConnectionProvider</property>
		<property name="hibernate.c3p0.max_size">10</property>
		<property name="hibernate.c3p0.min_size">1</property>
		<property name="hibernate.c3p0.max_statements">3</property>
		<property name="hibernate.c3p0.timeout">30</property>
		<property name="hibernate.c3p0.acquire_increment">1</property>
		<property name="hibernate.c3p0.idle_test_periodt">10</property>
		 
		<mapping resource="hbm/User.hbm.xml" />
		<mapping resource="hbm/Class.hbm.xml" />
		
	</session-factory>
</hibernate-configuration>

 User.hbm.xml

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping package="org.springfuncs.domain">
	<class name="com.base.test.entity.User" table="z_user">
		<cache usage="read-write" /> <!-- 缓存 -->
		<id name="id" column="id" length="4" type="integer">
			 <generator class="increment" />  
		</id>
		<property name="name" column="name" length="10" type="string" />
		<many-to-one name="zclass" class="com.base.test.entity.Class" column="class_id" /> 
	</class>
</hibernate-mapping>

 

Class.hbm.xml

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping package="org.springfuncs.domain">
	<class name="com.base.test.entity.Class" table="z_class">
		<cache usage="read-write" /> <!-- 缓存 -->
		<id name="id" column="id" length="4" type="integer">
			<generator class="assigned" />
		</id>
		<property name="className" column="class_name" length="10" type="string" />
		<!-- <set name="users" inverse="true" cascade="save-update,delete"> -->
		<set name="users" inverse="true" cascade="save-update,delete">
            <cache usage="read-write" /> <!-- 缓存 -->  
            <key column="id" />  
           <one-to-many class="com.base.test.entity.User" />  
     	</set>  
	</class>
</hibernate-mapping>

 

HibernateUtil.java

package com.base.test.hibernate4;

import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;
import org.hibernate.service.ServiceRegistry;
import org.hibernate.service.ServiceRegistryBuilder;

public final class HibernateUtil {

	private static SessionFactory sessionFactory;

	private HibernateUtil() {
	}

	static {
		try {
				
			/** 此方法在Hibernate4中被标记为过时 */
			// sessionFactory = new Configuration().configure().buildSessionFactory();

			/**Hibernate4取得SessionFactory的方法 */
			Configuration cfg = new Configuration().configure();
			ServiceRegistry serviceRegistry = new ServiceRegistryBuilder().applySettings(cfg.getProperties()).buildServiceRegistry();
			sessionFactory = cfg.buildSessionFactory(serviceRegistry);

		} catch (Throwable e) {
			e.printStackTrace();
			throw new ExceptionInInitializerError(e);
		}
	}

	public static SessionFactory getSessionFactory() {
		return sessionFactory;
	}
}

 

HQL

package com.base.test.hibernate4.hql;

import java.util.Iterator;
import java.util.List;
import java.util.Map;

import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.junit.Test;

import com.base.test.entity.User;
import com.base.test.hibernate4.HibernateUtil;

public class TestHql {

	/** 查询全部 （推荐） */
	public void test_list() {
		SessionFactory sessionFactory = HibernateUtil.getSessionFactory();
		Session session = sessionFactory.openSession();
		String hql = "from User";
		Query query = session.createQuery(hql);
		query.setCacheable(true); // 设置缓存
		List<User> list = query.list();
		show(list);
		session.close();
	}


	/** 分页查询 */
	// select * from
	// ( select e.*, rownum rn from ( select * from emp ) e where rownum <= 10 )
	// where rn > 1
	public void test_pagination() {
		int pageNo = 1; // 当前页数
		int pageSize = 5; // 每页显示条数

		SessionFactory sessionFactory = HibernateUtil.getSessionFactory();
		Session session = sessionFactory.openSession();
		String hql = "from User";
		Query query = session.createQuery(hql);
		query.setFirstResult((pageNo - 1) * pageSize);
		query.setMaxResults(pageSize);
		query.setCacheable(true); // 设置缓存
		List<User> list = query.list();
		show(list);
		session.close();
	}

	/** 查询结果是唯一值 */

	public void test_uniqueResult() {
		SessionFactory sessionFactory = HibernateUtil.getSessionFactory();
		Session session = sessionFactory.openSession();
		String hql = "from User where id=7";
		Query query = session.createQuery(hql);
		User emp = (User) query.uniqueResult();
		System.out.println(emp);
		session.close();
	}

	/** 投影查询 */
	public void test_projection2() {
		SessionFactory sessionFactory = HibernateUtil.getSessionFactory();
		Session session = sessionFactory.openSession();
		String hql = "select id,name,zclass.className from User"; // 查询多值
		Query query = session.createQuery(hql);
		List<Object[]> list = query.list();
		for (Object[] arr : list) {
			System.out.println(arr[0] + "\t" + arr[1] + "\t" + arr[2] + "\t" );
		}
		session.close();
	}

	/** 投影查询 */
	
	public void test_projection3() {
		SessionFactory sessionFactory = HibernateUtil.getSessionFactory();
		Session session = sessionFactory.openSession();
		String hql = "select new User(id,name) from User"; // 查询多值 封装在一个对象中
		Query query = session.createQuery(hql);
		List<User> list = query.list();
		for (User emp : list) {
			System.out.println(emp.getId() + "\t" + emp.getName() + "\t" + emp.getZclass() + "\t" );
		}
		session.close();
	}

	/** 投影查询 */
	
	public void test_projection4() {
		SessionFactory sessionFactory = HibernateUtil.getSessionFactory();
		Session session = sessionFactory.openSession();
		String hql = "select new Map(id,name) from User"; // map 大小都都可以， 查询多值 封装在一个Map中
		Query query = session.createQuery(hql);
		List<Map> list = query.list();
		for (Map map : list) {
			System.out.println(map.get("0") + "\t" + map.get("1") );
		}
		session.close();
	}

	/** 投影查询 （使用别名） */
	
	public void test_projection5() {
		SessionFactory sessionFactory = HibernateUtil.getSessionFactory();
		Session session = sessionFactory.openSession();
		String hql = "select new Map(e.id as id ,e.name as name ) from User as e";
		Query query = session.createQuery(hql);
		List<Map> list = query.list();
		for (Map map : list) {
			System.out.println(map.get("id") + "\t" + map.get("name") + "\t" );
		}
		session.close();
	}

	/** 去掉重复值 */
	
	public void test_distinct() {
		SessionFactory sessionFactory = HibernateUtil.getSessionFactory();
		Session session = sessionFactory.openSession();
		String hql = "select distinct zclass.className from User";
		Query query = session.createQuery(hql);
		List<String> list = query.list();
		for (String job : list) {
			System.out.println(job);
		}
		session.close();
	}

	/** 条件查询 */
	public void test_where1() {
		SessionFactory sessionFactory = HibernateUtil.getSessionFactory();
		Session session = sessionFactory.openSession();

		// String hql = "from Emp where empno=7369 and ename='SMITH'";
		// String hql = "from Emp where empno=7369 or ename='ALLEN'";
		// String hql = "from Emp where not (ename='SMITH')"; // () 可以不写

		// String hql = "from Emp where sal between 3000 and 5000";
		// String hql = "from Emp where sal not between 3000 and 5000";

		// String hql = "from Emp where empno in(7369,7900,7654)";
		// String hql = "from Emp where empno not in(7369,7900,7654)";

		// String hql = "from Emp where ename like 'S%'";
		// String hql = "from Emp where ename not like 'S%'";

		// String hql="from Emp where comm is null";
		// String hql="from Emp where comm is not null";

		// String hql = "from Emp where sal >= 3000 and sal<= 5000)";
		// String hql="from Emp where sal <>3000";
		String hql = "from Emp where sal !=3000";

		Query query = session.createQuery(hql);
		List<User> list = query.list();
		show(list);
		session.close();
	}

	/** 条件查询 */
	
	public void test_where2() {
		SessionFactory sessionFactory = HibernateUtil.getSessionFactory();
		Session session = sessionFactory.openSession();

		String hql = "from User where  name like ?";
		Query query = session.createQuery(hql);
		query.setString(0, "%A%");

		// String hql = "from Emp where  ename like :ename";
		// Query query = session.createQuery(hql);
		// query.setString("ename", "J%");

		List<User> list = query.list();
		show(list);
		session.close();
	}

	/** 统计函数 */
	@Test
	public void test_statistics1() {
		SessionFactory sessionFactory = HibernateUtil.getSessionFactory();
		Session session = sessionFactory.openSession();
		String hql = "select count(*),min(id),max(id),avg(id),sum(id) from User";
		Query query = session.createQuery(hql);
		Object[] values = (Object[]) query.uniqueResult();
		System.out.println("总数：" + values[0]);
		System.out.println("最小值：" + values[1]);
		System.out.println("最大值：" + values[2]);
		System.out.println("平均值：" + values[3]);
		System.out.println("合计：" + values[4]);
		session.close();
	}

	/** 统计函数 */
	public void test_statistics2() {
		SessionFactory sessionFactory = HibernateUtil.getSessionFactory();
		Session session = sessionFactory.openSession();
		String hql = "select deptno,avg(sal)  from Emp group by deptno having avg(sal)>2000 order by deptno";
		Query query = session.createQuery(hql);
		List<Object[]> list = query.list();
		for (Object[] arr : list) {
			System.out.println("部门编号：" + arr[0] + "\t" + "平均薪资：" + arr[1]);
		}
		session.close();
	}

	/** 使用函数(和底层数据库有关) */
	public void test_function() {
		SessionFactory sessionFactory = HibernateUtil.getSessionFactory();
		Session session = sessionFactory.openSession();
		String hql = "select to_char(hiredate,'yyyy-mm-dd') from Emp";
		Query query = session.createQuery(hql);
		List<String> list = query.list();
		for (String ename : list) {
			System.out.println(ename);
		}
		session.close();
	}

	/** 排序 */
	public void test_orderby() {
		SessionFactory sessionFactory = HibernateUtil.getSessionFactory();
		Session session = sessionFactory.openSession();
		String hql = "from Emp order by job,sal desc";
		Query query = session.createQuery(hql);
		List<User> list = query.list();
		show(list);
		session.close();
	}

	// 遍历集合
	private void show(List<User> list) {
		for (User emp : list) {
			System.out.println(emp);
		}
	}
}

 

QBC

package com.base.test.hibernate4.hql;


import java.util.List;

import org.hibernate.Criteria;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.criterion.Example;
import org.hibernate.criterion.Order;
import org.hibernate.criterion.ProjectionList;
import org.hibernate.criterion.Projections;
import org.hibernate.criterion.Restrictions;
import org.junit.Test;

import com.base.test.entity.User;
import com.base.test.hibernate4.HibernateUtil;

public class TestQBC {
	
	/** 查询全部 */
	@Test
	public void test_QBE() {
		User user = new User();
		user.setId(2);
		
		SessionFactory sessionFactory = HibernateUtil.getSessionFactory();
		Session session = sessionFactory.openSession();
		Criteria criteria = session.createCriteria(User.class);
		criteria.setCacheable(true); // 设置缓存
		criteria.add(Example.create(user));
		List<User> list = criteria.list();
		show(list);
		session.close();
	}

	/** 查询全部 */
	
	public void test_list() {
		SessionFactory sessionFactory = HibernateUtil.getSessionFactory();
		Session session = sessionFactory.openSession();
		Criteria criteria = session.createCriteria(User.class);
		criteria.setCacheable(true); // 设置缓存
		List<User> list = criteria.list();
		show(list);
		session.close();
	}

	/** 查询全部 */
	public void test_iterator() {
		// 没有iterator
	}

	/** 分页查询 */
	// select * from
	// ( select e.*, rownum rn from ( select * from emp ) e where rownum <= 10 )
	// where rn > 1

	public void test_pagination() {
		int pageNo = 1; // 当前页数
		int pageSize = 5; // 每页显示条数

		SessionFactory sessionFactory = HibernateUtil.getSessionFactory();
		Session session = sessionFactory.openSession();
		Criteria criteria = session.createCriteria(User.class);
		criteria.setFirstResult((pageNo - 1) * pageSize);
		criteria.setMaxResults(pageSize);
		criteria.setCacheable(true); // 设置缓存
		List<User> list = criteria.list();
		show(list);
		session.close();
	}

	/** 查询结果是唯一值 */
	
	public void test_uniqueResult() {
		SessionFactory sessionFactory = HibernateUtil.getSessionFactory();
		Session session = sessionFactory.openSession();
		Criteria criteria = session.createCriteria(User.class);
		criteria.add(Restrictions.eq("id", 7));
		User emp = (User) criteria.uniqueResult();
		System.out.println(emp);
		session.close();
	}

	/** 投影查询 */

	public void test_projection1() {
		SessionFactory sessionFactory = HibernateUtil.getSessionFactory();
		Session session = sessionFactory.openSession();
		Criteria criteria = session.createCriteria(User.class);
		criteria.setProjection(Projections.property("id"));
		List<Integer> list = criteria.list();
		for (Integer empno : list) {
			System.out.println(empno);
		}
		session.close();
	}

	/** 投影查询 */

	public void test_projection2() {
		SessionFactory sessionFactory = HibernateUtil.getSessionFactory();
		Session session = sessionFactory.openSession();
		Criteria criteria = session.createCriteria(User.class);
		ProjectionList projectionList = Projections.projectionList();
		projectionList.add(Projections.property("id"));
		projectionList.add(Projections.property("name"));
		criteria.setProjection(projectionList);
		List<Object[]> list = criteria.list();
		for (Object[] arr : list) {
			System.out.println(arr[0] + "\t" + arr[1] + "\t"   );
		}
		session.close();
	}

	/** 去掉重复值 */
	public void test_distinct() {
		SessionFactory sessionFactory = HibernateUtil.getSessionFactory();
		Session session = sessionFactory.openSession();
		Criteria criteria = session.createCriteria(User.class);
		criteria.setProjection(Projections.distinct(Projections.property("job")));
		List<String> list = criteria.list();
		for (String job : list) {
			System.out.println(job);
		}
		session.close();
	}

	/** 条件查询 */
	public void test_where() {
		SessionFactory sessionFactory = HibernateUtil.getSessionFactory();
		Session session = sessionFactory.openSession();
		Criteria criteria = session.createCriteria(User.class);

		// criteria.add(Restrictions.and(Restrictions.eq("empno", 7369), Restrictions.eq("ename", "SMITH")));
		// criteria.add(Restrictions.or(Restrictions.eq("empno", 7369), Restrictions.eq("ename", "ALLEN")));
		// criteria.add(Restrictions.not(Restrictions.eq("ename", "SMITH")));

		// criteria.add(Restrictions.between("sal", 3000.0, 5000.0));
		// criteria.add(Restrictions.not(Restrictions.between("sal", 3000.0, 5000.0)));

		// criteria.add(Restrictions.in("empno", new Object[] { 7369, 7900, 7654 }));
		// criteria.add(Restrictions.not(Restrictions.in("empno", new Object[] { 7369, 7900, 7654 })));

		// criteria.add(Restrictions.like("ename", "S%", MatchMode.START));
		// criteria.add(Restrictions.not(Restrictions.like("ename", "S%", MatchMode.START)));

		// criteria.add(Restrictions.isNull("comm"));
		// criteria.add(Restrictions.not(Restrictions.isNull("comm")));

		// criteria.add(Restrictions.and(Restrictions.ge("sal", 3000.0), Restrictions.le("sal", 5000.0)));
		criteria.add(Restrictions.ne("sal", 3000.0));
		List<User> list = criteria.list();
		show(list);
		session.close();
	}

	/** 统计函数 */
	public void test_statistics1() {
		SessionFactory sessionFactory = HibernateUtil.getSessionFactory();
		Session session = sessionFactory.openSession();
		Criteria criteria = session.createCriteria(User.class);
		ProjectionList projectionList = Projections.projectionList();
		projectionList.add(Projections.rowCount());
		projectionList.add(Projections.min("sal"));
		projectionList.add(Projections.max("sal"));
		projectionList.add(Projections.avg("sal"));
		projectionList.add(Projections.sum("sal"));
		criteria.setProjection(projectionList);
		Object[] values = (Object[]) criteria.uniqueResult();
		System.out.println("总数：" + values[0]);
		System.out.println("最小值：" + values[1]);
		System.out.println("最大值：" + values[2]);
		System.out.println("平均值：" + values[3]);
		System.out.println("合计：" + values[4]);
		session.close();
	}

	/** 统计函数 */
	// select deptno,avg(sal) from Emp group by deptno having avg(sal)>2000 order by deptno;
	public void test_statistics2() {
		SessionFactory sessionFactory = HibernateUtil.getSessionFactory();
		Session session = sessionFactory.openSession();
		Criteria criteria = session.createCriteria(User.class);
		ProjectionList projectionList = Projections.projectionList();
		projectionList.add(Projections.property("deptno"));
		projectionList.add(Projections.avg("sal"));
		projectionList.add(Projections.groupProperty("deptno"));
		criteria.setProjection(projectionList);
		// TODO having 怎么表示 暂时没有找到
		criteria.addOrder(Order.asc("deptno"));
		List<Object[]> list = criteria.list();

		for (Object[] arr : list) {
			System.out.println("部门编号：" + arr[0] + "\t" + "平均薪资：" + arr[1]);
		}
		session.close();
	}

	/** 使用函数(和底层数据库有关) */
	public void test_function() {
		// TODO
	}

	/** 排序 */
	public void test_orderby() {
		SessionFactory sessionFactory = HibernateUtil.getSessionFactory();
		Session session = sessionFactory.openSession();
		Criteria criteria = session.createCriteria(User.class);
		criteria.addOrder(Order.asc("job"));
		criteria.addOrder(Order.desc("sal"));
		List<User> list = criteria.list();
		show(list);
		session.close();
	}

	// 遍历集合
	private void show(List<User> list) {
		for (User emp : list) {
			System.out.println(emp);
		}
	}
}

 

SQL

package com.base.test.hibernate4.hql;


import java.util.List;

import org.hibernate.SQLQuery;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.transform.Transformers;
import org.hibernate.type.StandardBasicTypes;
import org.junit.Test;

import com.base.test.entity.User;
import com.base.test.hibernate4.HibernateUtil;

public class TestSQL {

	/** 查询全部 */

	public void test_sql1() {
		SessionFactory sessionFactory = HibernateUtil.getSessionFactory();
		Session session = sessionFactory.openSession();
		String sql = "select * from z_user";
		SQLQuery query = session.createSQLQuery(sql);
		List<Object[]> list = query.list();
		for (Object[] arr : list) {
			System.out.println(arr[0] + "\t" + arr[1] + "\t" + arr[2]);
		}
		session.close();
	}

	/** 查询全部 */
	
	public void test_sql2() {
		SessionFactory sessionFactory = HibernateUtil.getSessionFactory();
		Session session = sessionFactory.openSession();
		String sql = "select * from z_user";
		SQLQuery query = session.createSQLQuery(sql);
		query.addScalar("id", StandardBasicTypes.INTEGER);
		query.addScalar("name", StandardBasicTypes.STRING);
		query.addScalar("class_id", StandardBasicTypes.INTEGER);
		List<Object[]> list = query.list();
		for (Object[] arr : list) {
			System.out.println(arr[0] + "\t" + arr[1] + "\t" + arr[2] );
		}
		session.close();
	}

	/** 查询全部 */

	public void test_sql3() {
		SessionFactory sessionFactory = HibernateUtil.getSessionFactory();
		Session session = sessionFactory.openSession();
		String sql = "select * from z_user";
		SQLQuery query = session.createSQLQuery(sql);
		query.addScalar("id", StandardBasicTypes.INTEGER);
		query.addScalar("name", StandardBasicTypes.STRING);
		query.setResultTransformer(Transformers.aliasToBean(User.class));
		List<User> list = query.list();
		show(list);
		session.close();
	}

	/** 查询全部 (推荐) */

	public void test_sql4() {
		SessionFactory sessionFactory = HibernateUtil.getSessionFactory();
		Session session = sessionFactory.openSession();

		String sql = "select * from z_user";
		SQLQuery query = session.createSQLQuery(sql);
		query.addEntity(User.class);

		// String sql = "select {e.*} from emp e";
		// SQLQuery query = session.createSQLQuery(sql);
		// query.addEntity("e", Emp.class);
		query.setCacheable(true); // 设置缓存
		List<User> list = query.list();
		show(list);
		session.close();
	}

	/** 条件查询 */
	@Test
	public void test_where() {
		SessionFactory sessionFactory = HibernateUtil.getSessionFactory();
		Session session = sessionFactory.openSession();

		String sql = "select * from z_user where  name like ?";
		SQLQuery query = session.createSQLQuery(sql);
		query.addEntity(User.class);
		query.setString(0, "%A%");

		// String sql = "select * from emp where  ename like :ename";
		// SQLQuery query = session.createSQLQuery(sql);
		// query.addEntity(Emp.class);
		// query.setString("ename", "J%");

		List<User> list = query.list();
		show(list);
		session.close();
	}

	// 遍历集合
	private void show(List<User> list) {
		for (User emp : list) {
			System.out.println(emp);
		}
	}
}

 

CRUD

package com.base.test.hibernate4.hql;


import java.io.Serializable;

import org.hibernate.Hibernate;
import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.junit.Test;

import com.base.test.entity.User;
import com.base.test.hibernate4.HibernateUtil;

public class TestCRUD {

	// 添加

	public void test_save() {

		User customer = new User();
		customer.setName("monday");

		SessionFactory sf = HibernateUtil.getSessionFactory();
		Session session = sf.openSession();
		Transaction tx = session.beginTransaction();
		Serializable id = session.save(customer); // 返回OID
		tx.commit();
		session.close();
		System.out.println("id=" + id);
	}

	// 添加
	
	public void test_persist() {
		User customer = new User();
		customer.setName("monday");

		SessionFactory sf = HibernateUtil.getSessionFactory();
		Session session = sf.openSession();
		Transaction tx = session.beginTransaction();
		session.persist(customer); // 无返回值
		tx.commit();
		session.close();
	}

	// 添加
	public void test_saveOrUpdate1() {
		User customer = new User();
		customer.setName("monday");

		SessionFactory sf = HibernateUtil.getSessionFactory();
		Session session = sf.openSession();
		Transaction tx = session.beginTransaction();
		session.saveOrUpdate(customer); // OID 为空 执行save操作
		tx.commit();
		session.close();
	}

	// 修改
	
	public void test_saveOrUpdate2() {
		User customer = new User();
		customer.setName("monday_update");
		customer.setId(10);

		SessionFactory sf = HibernateUtil.getSessionFactory();
		Session session = sf.openSession();
		Transaction tx = session.beginTransaction();
		session.saveOrUpdate(customer); // OID 为不空 执行update操作
		tx.commit();
		session.close();
	}

	// 修改
	public void test_update() {
		User customer = new User();
		customer.setName("monday_update2");
		customer.setId(5);

		SessionFactory sf = HibernateUtil.getSessionFactory();
		Session session = sf.openSession();
		Transaction tx = session.beginTransaction();
		session.update(customer);
		tx.commit();
		session.close();
	}

	// 修改
	
	public void test_update_hql() {
		String hql = "update User set name=? where id=?";
		SessionFactory sf = HibernateUtil.getSessionFactory();
		Session session = sf.openSession();
		Transaction tx = session.beginTransaction();
		Query query = session.createQuery(hql);
		query.setParameter(0, "springfuncs");
		query.setParameter(1, 11);
		query.executeUpdate();
		tx.commit();
		session.close();
	}

	// 删除
	public void test_delete() {
		User customer = new User();
		customer.setId(5);

		SessionFactory sf = HibernateUtil.getSessionFactory();
		Session session = sf.openSession();
		Transaction tx = session.beginTransaction();
		session.delete(customer);
		tx.commit();
		session.close();
	}

	// 删除
	public void test_delete_hql() {
		String hql = "delete from User where id=?";
		SessionFactory sf = HibernateUtil.getSessionFactory();
		Session session = sf.openSession();
		Transaction tx = session.beginTransaction();
		Query query = session.createQuery(hql);
		query.setParameter(0, 6);
		query.executeUpdate();
		tx.commit();
		session.close();
	}

	// 查询
	
	public void test_get() {
		SessionFactory sf = HibernateUtil.getSessionFactory();
		Session session = sf.openSession();
		// Transaction tx = session.beginTransaction();
		User customer = (User) session.get(User.class, 1);
		// tx.commit();
		session.close();
		System.out.println(customer);
	}

	// 查询
	@Test
	public void test_load() {
		SessionFactory sf = HibernateUtil.getSessionFactory();
		Session session = sf.openSession();
		// Transaction tx = session.getTransaction();
		// tx.begin();
		User customer = (User) session.load(User.class, 1);
		// tx.commit();

		Hibernate.initialize(customer);
		session.close();
		System.out.println(customer);

		// 或者
		// System.out.println(customer);
		// session.close();
	}
}

 

关联查询

package com.base.test.hibernate4.hql;

import java.util.Iterator;
import java.util.List;
import java.util.Set;

import org.hibernate.Criteria;
import org.hibernate.FetchMode;
import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.junit.Test;

import com.base.test.entity.User;
import com.base.test.entity.Class;
import com.base.test.hibernate4.HibernateUtil;

public class TestAssociated {

	// 交叉连接(多表的笛卡儿积不常用)
	// select c.*,o.* from customers c, orders o

	public void test_cross_join() {
		SessionFactory sessionFactory = HibernateUtil.getSessionFactory();
		Session session = sessionFactory.openSession();
		String hql = "from User c , Class o";
		Query query = session.createQuery(hql);
		List<Object[]> list = query.list();
		for (int i = 0; i < list.size(); i++) {
			Object[] obj = (Object[]) list.get(i);
			User customer = (User) obj[0];
			Class order = (Class) obj[1];
			System.out.println((i + 1) + "---" + customer);
			System.out.println((i + 1) + "---" + order);
		}
		session.close();
	}

	// 内链接
	// select c.* from customers c inner join orders o on c.id=o.customer_id
	// select o.* from orders o where o.customer_id=?
	@Test
	public void test_inner_join() {
		SessionFactory sessionFactory = HibernateUtil.getSessionFactory();
		Session session = sessionFactory.openSession();
		String hql = "select c from User c inner join Class"; // inner 可省略
		Query query = session.createQuery(hql);
		List<User> list = query.list();
		showCustomer(list);
		session.close();
	}

	// 左外连接
	// select c.* from customers c left outer join orders o on c.id=o.customer_id
	// select o.* from orders o where o.customer_id=?
	public void test_left_outer_join() {
		SessionFactory sessionFactory = HibernateUtil.getSessionFactory();
		Session session = sessionFactory.openSession();
		String hql = "select c from Customer c left outer join c.orders"; // outer 可省略
		Query query = session.createQuery(hql);
		List<User> list = query.list();
		showCustomer(list);
		session.close();
	}

	// 右连接
	// select c.*, o.* from customers c right outer join orders o on c.id=o.customer_id
	public void test_right_outer_join() {
		SessionFactory sessionFactory = HibernateUtil.getSessionFactory();
		Session session = sessionFactory.openSession();
		String hql = "from Customer c right outer join c.orders"; // outer 可省略
		Query query = session.createQuery(hql);
		List<Object[]> list = query.list();
		for (int i = 0; list != null && i < list.size(); i++) {
			Object[] obj = list.get(i);
			User customer = (User) obj[0];
			Class order = (Class) obj[1];
			System.out.println((i + 1) + "---" + customer);
			System.out.println((i + 1) + "---" + order);
		}
		session.close();
	}

	// 迫切内连接(推荐)
	// select c.*,o.* from customers c inner join orders o on c.id=o.customer_id
	public void test_inner_join_fetch() {
		SessionFactory sessionFactory = HibernateUtil.getSessionFactory();
		Session session = sessionFactory.openSession();
		String hql = "select c from Customer c inner join fetch c.orders"; // inner 可省略
		Query query = session.createQuery(hql);
		query.setCacheable(true); // 设置缓存
		List<User> list = query.list();
		showCustomer(list);
		session.close();
	}

	// 迫切左外连接(推荐)
	// select c.*,o.* from customers c left outer join orders o on c.id=o.customer_id
	public void test_left_outer_join_fetch() {
		SessionFactory sessionFactory = HibernateUtil.getSessionFactory();
		Session session = sessionFactory.openSession();
		String hql = "select c from Customer c left outer join fetch c.orders"; // outer可省略
		Query query = session.createQuery(hql);
		query.setCacheable(true); // 设置缓存
		List<User> list = query.list();
		showCustomer(list);
		session.close();
	}

	// 迫切左外连接(推荐)
	// select c.*, o.* from customers c left outer join orders o on c.id=o.customer_id
	public void test_left_outer_join_fetch_QBC() {
		SessionFactory sessionFactory = HibernateUtil.getSessionFactory();
		Session session = sessionFactory.openSession();
		Criteria criteria = session.createCriteria(User.class).setFetchMode("orders", FetchMode.JOIN);
		criteria.setCacheable(true); // 设置缓存
		List<User> list = criteria.list();
		showCustomer(list);
		session.close();
	}

	// 打印Order信息
	private void showCustomer(List<User> list) {
		for (User customer : list) {
			System.out.println(customer);
			if (customer.getZclass() != null ) {
				Class c = customer.getZclass();
				System.out.println(c.getClassName());
			}
		}
	}
}

 

缓存

package com.base.test.hibernate4.hql;


import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.junit.Test;

import com.base.test.entity.User;
import com.base.test.hibernate4.HibernateUtil;

public class TestCache {

	// 测试Session缓存
	
	public void test_cache1() {
		SessionFactory sessionFactory = HibernateUtil.getSessionFactory();
		Session session = sessionFactory.openSession();
		User emp1 = (User) session.get(User.class, 1);
		User emp2 = (User) session.get(User.class, 1);
		System.out.println(emp1 == emp2);
	}

	// 测试 EHCache缓存
	// 配置缓存的话，会执行一条SQL，否则是2条SQL
	@Test
	public void test_cache2() {
		SessionFactory sessionFactory = HibernateUtil.getSessionFactory();
		Session session = sessionFactory.openSession();
		String hql = "from User";

		Query query = session.createQuery(hql);
		query.setCacheable(true);
		query.list();

		query = session.createQuery(hql);
		query.setCacheable(true);
		query.list();
	}
}