Hibernate中配置ehcache案例_ehcache can not modify this registry-优快云博客

本文链接：https://blog.youkuaiyun.com/ItJavawfc/article/details/38264753

源代码下载地址：

http://download.youkuaiyun.com/detail/itjavawfc/7690569

源代码如下：

测试类：

import java.util.Iterator;

import org.hibernate.Session;
import org.hibernate.Transaction;

import entity.District;
import entity.Street;
import util.HibernateUtil;

public class RelationTest {
	public static void main(String[] args){
	 	Session session=HibernateUtil.getSession();

		Transaction tx=session.beginTransaction();
 
		/*	District d1=new District(65,"大黄");
		
		Street s1=new Street(1,d1,"j");
		Street s2=new Street(2,d1,"ji");
		Street s3=new Street(3,d1,"i");
		Street s4=new Street(null,d1,"jo");
		
		session.save(d1);
		session.save(s1);
		session.save(s2);
		session.save(s3);
		*/
		
	/*	District d1=new District(null,"武汉东湖黄冈");
		
		
		Street s1=new Street();
		s1.setStreet_name("武汉");
		Street s2=new Street();
		s2.setStreet_name("随州");
		
		Street s3=new Street();
		s2.setStreet_name("上市");
		
		d1.getStreets().add(s1);
		d1.getStreets().add(s2);
		d1.getStreets().add(s3);
		
		session.save(d1);
		//session.save(s1);
		//session.save(s2);
		//session.save(s3);
		 */
 	
		District d=(District)session.get(District.class, 1002);
		System.out.println("您的所在区为:"+d.getName()+",所在街道如下:");
		Iterator<Street> it=d.getStreets().iterator();
		while(it.hasNext()){
			Street s=it.next();
			System.out.println(s.getId()+" -------------  "+s.getStreet_name()+"  -------------   "+s.getStreet_name());
		}
		tx.commit();
		session.close();
		//HibernateUtil.close();
		
		 
		//-----------------------------------------------------------------------------------------------
		System.out.println("-----------2222222222222------------------------------------------------------------------");
		Session session2=HibernateUtil.getSession();
		Transaction tx2=session2.beginTransaction();
		District d2=(District)session2.load(District.class, 1002);
		System.out.println("您的所在区为:"+d2.getName()+",所在街道如下:");
		
		session2.close();
		HibernateUtil.close();
	 

		
	}

}

两个实体类：

package entity;

import java.io.Serializable;
import java.util.HashSet;
import java.util.Set;

import org.hibernate.annotations.Cache;
import org.hibernate.annotations.CacheConcurrencyStrategy;
@Cache(usage = CacheConcurrencyStrategy.READ_WRITE)
public class District implements Serializable {
	private Integer id;
	private String name;
	private Set<Street> streets=new HashSet<Street>();

	public Set<Street> getStreets() {
		return streets;
	}

	public void setStreets(Set<Street> streets) {
		this.streets = streets;
	}

	public District() {
		super();
	}

	public District(Integer id, String name) {
		super();
		this.id = id;
		this.name = name;
	}

	public Integer getId() {
		return id;
	}
	public void setId(Integer id) {
		this.id = id;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	
	
	
	@Override
	public int hashCode() {
		final int prime = 31;
		int result = 1;
		result = prime * result + ((id == null) ? 0 : id.hashCode());
		result = prime * result + ((name == null) ? 0 : name.hashCode());
		return result;
	}
	@Override
	public boolean equals(Object obj) {
		if (this == obj)
			return true;
		if (obj == null)
			return false;
		if (getClass() != obj.getClass())
			return false;
		District other = (District) obj;
		if (id == null) {
			if (other.id != null)
				return false;
		} else if (!id.equals(other.id))
			return false;
		if (name == null) {
			if (other.name != null)
				return false;
		} else if (!name.equals(other.name))
			return false;
		return true;
	}

}

package entity;

import java.io.Serializable;

import org.hibernate.annotations.Cache;
import org.hibernate.annotations.CacheConcurrencyStrategy;
  //@Cache(usage = CacheConcurrencyStrategy.READ_WRITE)
public class Street implements Serializable {
	private Integer id;
	private District   districtid;
    private String street_name;
   
    public Street() {
		super();
	}
    
	public Street(Integer id, District districtid, String street_name) {
		super();
		this.id = id;
		this.districtid = districtid;
		this.street_name = street_name;
	}
   
   public Integer getId() {
		return id;
	}
	public void setId(Integer id) {
		this.id = id;
	}
	public District getDistrictid() {
		return districtid;
	}
	public void setDistrictid(District districtid) {
		this.districtid = districtid;
	}
	public String getStreet_name() {
		return street_name;
	}
	public void setStreet_name(String street_name) {
		this.street_name = street_name;
	}
	
	
	
	
	public int hashCode() {
		final int prime = 31;
		int result = 1;
		result = prime * result
				+ ((districtid == null) ? 0 : districtid.hashCode());
		result = prime * result + ((id == null) ? 0 : id.hashCode());
		result = prime * result
				+ ((street_name == null) ? 0 : street_name.hashCode());
		return result;
	}
	@Override
	public boolean equals(Object obj) {
		if (this == obj)
			return true;
		if (obj == null)
			return false;
		if (getClass() != obj.getClass())
			return false;
		Street other = (Street) obj;
		if (districtid == null) {
			if (other.districtid != null)
				return false;
		} else if (!districtid.equals(other.districtid))
			return false;
		if (id == null) {
			if (other.id != null)
				return false;
		} else if (!id.equals(other.id))
			return false;
		if (street_name == null) {
			if (other.street_name != null)
				return false;
		} else if (!street_name.equals(other.street_name))
			return false;
		return true;
	}

}

两个DAO

package dao.impl;

import java.util.List;

import entity.Street;

public interface IStreetDAO {
	void insert(Street entity);
	void delete(Street entity);
	void update(Street entity);
	Street findById(Integer id);
	List<Street> list();
}

package dao.impl;

import java.util.List;

import entity.District;
import entity.Street;

public interface IDistrictDAO {


	void insert(Street entity);
	void delete(District entity);
	void update(District entity);
	District findById(Integer id);
	List<District> list();
	
	 /*
	
	void insert(Street entity);
	void delete(Street entity);
	void update(Street entity);
	Street findById(Integer id);
	List<Street> list();
	 	*/
}

两个DAO实现：

package dao.impl;

import java.util.List;

import org.hibernate.HibernateException;
import org.hibernate.Session;
import org.hibernate.Transaction;

import util.HibernateUtil;
import entity.District;
import entity.Street;

public class StreetDAOImpl implements IStreetDAO {

	@Override
	public void insert(Street entity) {
		// TODO Auto-generated method stub
		// TODO Auto-generated method stub
		Session session=HibernateUtil.getSession();
		Transaction tx=session.beginTransaction();
		
	//	Street s=new Street();
		session.save(entity);
		
		tx.commit();
		session.close();
	}

	@Override
	public void delete(Street entity) {
		// TODO Auto-generated method stub
		Session session=HibernateUtil.getSession();
		Transaction tx=session.beginTransaction();
		session.createQuery("delete Street").executeUpdate();
		tx.commit();
		session.close();
		
		
	}

	@Override
	public void update(Street entity) {
		// TODO Auto-generated method stub
		// TODO Auto-generated method stub
		Session session=HibernateUtil.getSession();
		Transaction tx=session.beginTransaction();
		
		session.update(entity);
		
		tx.commit();
		session.close();
		
	}

	@Override
	public Street findById(Integer id) {
		// TODO Auto-generated method stub
				Session session=HibernateUtil.getSession();
				Transaction tx=session.beginTransaction();
				Street d=null;
				try{
					d=(Street)session.get(Street.class,id);
					
					//System.out.println(d);
					
					tx.commit();
				}catch(HibernateException e){
					tx.rollback();
				}finally{
					session.close();
				}
			//	System.out.println(d);
				return d;
	}

	@Override
	public List<Street> list() {
		// TODO Auto-generated method stub
		return null;
	}

 	
 
}

package dao.impl;

import java.util.List;

import org.hibernate.HibernateException;
import org.hibernate.Session;
import org.hibernate.Transaction;

import util.HibernateUtil;
import entity.District;
import entity.Street;

public class DistrictDAOImpl implements IDistrictDAO {

	@Override
	public void insert(Street entity) {
		// TODO Auto-generated method stub
		
	}

	@Override
	public void delete(District entity) {
		// TODO Auto-generated method stub
		
	}

	@Override
	public void update(District entity) {
		// TODO Auto-generated method stub
		
	}

	@Override
	public District findById(Integer id) {
		// TODO Auto-generated method stub
		Session session=HibernateUtil.getSession();
		Transaction tx=session.beginTransaction();
		District d=null;
		try{
			d=(District)session.get(District.class,1001);
			
			//System.out.println(d);
			
			tx.commit();
		}catch(HibernateException e){
			tx.rollback();
		}finally{
			session.close();
		}
	//	System.out.println(d);
		return d;
		
	}

	@Override
	public List<District> list() {
		// TODO Auto-generated method stub
		return null;
	}

	 

}

对应两个配置文件：

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd" >
<hibernate-mapping>
    <class name="entity.District" table="DISTRICT" schema="scott">
       <cache usage="read-only" region="sampleCache1"/> 
        <id name="id" type="java.lang.Integer">
            <column name="ID" precision="22" scale="0" />
            <generator class="sequence" >
            <param name="sequence">SEQ_DISTRICT</param>
            </generator>
        </id>
        <property name="name" type="java.lang.String">
            <column name="DISTRICT_NAME" length="7" not-null="true" />
        </property>
        
        
        <set name="streets" >  <!--  cascade="all"  cascade="all"-->
       <!--     <cache usage="read-only"/>       --> 
           <key column="DISTRICT_ID"/>
           <one-to-many class="entity.Street"/>
        </set>
        
        
    </class>
</hibernate-mapping>

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd" >
<hibernate-mapping>
    <class name="entity.Street" table="STREET" schema="scott">
       <cache usage="read-only" region="sampleCache1"/> 
        <id name="id" type="java.lang.Integer">
            <column name="ID" precision="22" scale="0" />
            <generator class="native" >
            <param name="sequence">SEQ_DISTRICT</param>
            </generator>
        </id>
        
         <many-to-one name="districtid" class="entity.District">  
           <column name="DISTRICT_ID" length="7" not-null="true" />     
          </many-to-one>                                               
        
        
        
        
         <property name="street_name" type="java.lang.String">
            <column name="street_name" length="7" not-null="true" />
        </property>
         
    </class>
</hibernate-mapping>

必须的ehcache.xml文件(在Hibernate目录中找）

<ehcache>
    <diskStore path="d:/ehcache"/>   
    <!-- diskStore path="d:/ehcache"/               path="java.io.tmpdir"/ -->
    
    <defaultCache
        maxElementsInMemory="10000"
        eternal="false"
        timeToIdleSeconds="120"
        timeToLiveSeconds="120"
        overflowToDisk="true"
        />

  
    <cache name="sampleCache1"
        maxElementsInMemory="10000"
        eternal="false"
        timeToIdleSeconds="300"
        timeToLiveSeconds="600"
        overflowToDisk="true"
        />

  
    <cache name="sampleCache2"
        maxElementsInMemory="1000"
        eternal="true"
        timeToIdleSeconds="0"
        timeToLiveSeconds="0"
        overflowToDisk="false"
        /> -->

  

</ehcache>

Hibernate的配置文件:

<?xml version='1.0' encoding='UTF-8'?>
<!DOCTYPE hibernate-configuration PUBLIC
          "-//Hibernate/Hibernate Configuration DTD 3.0//EN"
          "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
<!-- Generated by MyEclipse Hibernate Tools.                   -->
<hibernate-configuration>

<session-factory>
	<property name="dialect">
		org.hibernate.dialect.Oracle9Dialect
	</property>
	<property name="connection.url">
		jdbc:oracle:thin:@127.0.0.1:1521:orcl
	</property>
	<property name="connection.username">scott</property>
	<property name="connection.password">tiger</property>
	<property name="connection.driver_class">
		oracle.jdbc.OracleDriver
	</property>
	<property name="myeclipse.connection.profile">
		oracledriver
	</property>
	
	<property name="show_sql">true</property>
	<property name="format_sql">true</property>
    <property name="hibernate.hbm2ddl.auto">update</property>
    
     
    <!-- 配置二级缓存 ，启用二级缓存-->
    
    <!--  
    <property name="cache.use_second_level_cache">true</property>  -->
    <property name="cache.use_query_cache">true</property>
    
    
  <property   name="hibernate.cache.region.factory_class">org.hibernate.cache.ehcache.EhCacheRegionFactory</property>
    
<!-- <property name="hibernate.cache.region.factory_class">org.hibernate.cache.EhCacheRegionFactory  -->
<!-- </property>   -->  

 

	<mapping resource="entity/District.hbm.xml" />
	<mapping resource="entity/Street.hbm.xml" />  
</session-factory>

</hibernate-configuration>

工具类：

package util;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;
import org.hibernate.service.ServiceRegistry;
import org.hibernate.service.ServiceRegistryBuilder;

public class HibernateUtil {
	private   static SessionFactory sf=null;
	private static HibernateUtil instance=new HibernateUtil();
	private HibernateUtil(){
		
		//读取文件
		Configuration cfg=new Configuration().configure();
		//解析再创建
		ServiceRegistry  sr=  new ServiceRegistryBuilder().applySettings(cfg.getProperties()).buildServiceRegistry();
		sf=cfg.buildSessionFactory(sr);
	}
	
	//提供静态方法
	public static Session getSession(){
		return sf.openSession();
	}
	
	public static void close(){
		if(sf!=null){
			sf.close();

		}
	}
	
	public static void main(String[] args){
		System.out.println(HibernateUtil.getSession());
	}
	
}

运行结果：