EHCache的简单使用 -

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EHCache的简单使用

博客分类：

EHCache

Bean Hibernate MySQL Cache DAO

一、创建ehcache配制文件，放到classes目录下

<?xml version="1.0" encoding="UTF-8"?>

<ehcache xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="http://ehcache.org/ehcache.xsd">

    <diskStore path="c:\\myapp\\cache"/>
    <defaultCache
        maxElementsInMemory="10000"
        eternal="false"
        timeToIdleSeconds="120"
        timeToLiveSeconds="120"
        overflowToDisk="true"
        diskSpoolBufferSizeMB="30"
        maxElementsOnDisk="10000000"
        diskPersistent="false"
        diskExpiryThreadIntervalSeconds="120"
        memoryStoreEvictionPolicy="LRU"
        />

</ehcache>

二、修改hibernate.cfg.xml配制文件

<?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="dialect">org.hibernate.dialect.MySQLDialect</property>
    <property name="cache.provider_class">net.sf.ehcache.hibernate.SingletonEhCacheProvider</property>
    <property name="net.sf.ehcache.configurationResourceName">ehcache.xml</property>
    <property name="hibernate.cache.use_second_level_cache">true</property>
    <property name="hibernate.cache.use_query_cache">true</property>
    <property name="hibernate.generate_statistics">true</property>
    <property name="show_sql">true</property>
    

    
    <mapping resource="cn/eaglelink/pojo/UserInfo.hbm.xml"/>

  </session-factory>
</hibernate-configuration>

三、spring配制文件如下：

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">

<bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
    <property name="dataSource" ref="dataSource"/>
    <property name="configLocation" value="classpath:hibernate.cfg.xml"/>
    <property name="lobHandler" ref="lobHandler"></property>
  </bean>

  <bean id="myTxManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager">
    <property name="sessionFactory" ref="sessionFactory"/>
  </bean>

  <bean id="myDaoTxProxy" abstract="true" class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean">
    <property name="transactionManager" ref="myTxManager"/>
    <property name="transactionAttributes">
      <props>
        <prop key="save*">PROPAGATION_REQUIRED</prop>
        <prop key="update*">PROPAGATION_REQUIRED</prop>
        <prop key="delete*">PROPAGATION_REQUIRED</prop>
        <prop key="*">PROPAGATION_REQUIRED</prop>
      </props>
    </property>
  </bean>

  <bean id="myServiceTxProxy" abstract="true" class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean">
    <property name="transactionManager" ref="myTxManager"/>
    <property name="transactionAttributes">
      <props>
        <prop key="save*">PROPAGATION_REQUIRED</prop>
        <prop key="update*">PROPAGATION_REQUIRED</prop>
        <prop key="delete*">PROPAGATION_REQUIRED</prop>
        <prop key="find*">PROPAGATION_REQUIRED</prop>
        <prop key="*">PROPAGATION_REQUIRED</prop>
      </props>
    </property>
  </bean>

  <bean id="lobHandler" class="org.springframework.jdbc.support.lob.DefaultLobHandler"/>

  
  <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">
   <property name="driverClassName">
   <value>com.mysql.jdbc.Driver</value>
   </property>
   <property name="url">
   
   <value>jdbc:mysql://localhost:3306/eaglelinkcas?useUnicode=true&characterEncoding=utf-8</value>
   </property>
   <property name="username">
   <value>root</value>
   </property>
   <property name="password">
   <value>root</value>
   </property>
  </bean>

  
     <bean id="cacheManager" class="org.springframework.cache.ehcache.EhCacheManagerFactoryBean">
         <property name="configLocation">
             <value>classpath:ehcache_ls.xml</value>
         </property>
     </bean>

<bean id="userDaoTarget" class="cn.eaglelink.dao.impl.UserDaoImpl">
    <property name="sessionFactory">
      <ref bean="sessionFactory"/>
    </property>
  </bean>
  <bean id="userDao" parent="myDaoTxProxy">
    <property name="target">
      <ref bean="userDaoTarget"/>
    </property>
  </bean>

  
  
  
  

  
  <bean id="nativeBean" class="cn.eaglelink.util.NativeBeanFactory" />

</beans>

四、在需要增加缓存的DAO中修改：

public class UserDaoImpl extends BaseDaoImpl<UserInfo> implements IUserDao{

@SuppressWarnings("unchecked")
@Override
public List<UserInfo> queryAllUser() {
  try{
   Query query=this.getHibernateTemplate().getSessionFactory().getCurrentSession().createQuery("from UserInfo");
   query.setCacheable(true);
   List<UserInfo> list=query.list();
   if(list.size()>0){
    return list;
   }
  }catch(Exception e){
   e.printStackTrace();
  }
  return null;
}

}

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