spring缓存 ehcache

  ehcache 与spring集成实现简单的数据集缓存，事例是在ssh集成上实现，不对ssh做阐述。

 

1 ： lib追加jar包

       ehcache-1.2.4.jar

 

2 ： applicationContext-service.xml

      <bean id="GatewayIPManager"    class="cn.com.superv.netmessage.oam.web.manager.GatewayIPManager">            <property name="transactionManager">                <ref bean="transactionManager" />            </property>            <property name="interProtocolDAO">                <ref bean="InterProtocolDAO" />            </property>            <!-- 缓存对象-->            <property name="gatewayIPCache" ref="GatewayIPManagerBean"/>        </bean>

3 ： applicationContext-cache.xml  缓存事例配置文件

     <?xml version="1.0"?>         <!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN"            "http://www.springframework.org/dtd/spring-beans.dtd">               <beans>    <!-- 缓存管理 -->          <bean id="cacheManager"             class="org.springframework.cache.ehcache.EhCacheManagerFactoryBean">             <property name="configLocation"                value="WEB-INF/ehcache.xml">             </property>           </bean>                <bean id="GatewayIPManagerBean"       class="org.springframework.cache.ehcache.EhCacheFactoryBean">              <property name="cacheManager" ref="cacheManager"></property>              <property name="cacheName" value="GatewayIPManager"></property>            </bean>          </beans>

 

        <ehcache xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:noNamespaceSchemaLocation="ehcache.xsd">            <diskStore path="java.io.tmpdir"/>            <!--             maxElementsInMemory:  最大缓存100个对象                       eternal:不是永久有效               overflowToDisk:缓存满了不写的磁盘            timeToIdleSeconds:180秒后没有读就失效            timeToLiveSeconds:300秒后失效            memoryStoreEvictionPolicy:当缓存数达到最大，将移除使用最少的缓存对象            -->           <!-- 默认缓存设置 -->          <defaultCache              maxElementsInMemory="10000"              eternal="false"              timeToIdleSeconds="180"              timeToLiveSeconds="300"              overflowToDisk="true"              memoryStoreEvictionPolicy="LRU"              />           <!-- 缓存设置 -->          <cache name="GatewayIPManager"             maxElementsInMemory="100"             eternal="false"             overflowToDisk="false"             timeToIdleSeconds="300"             timeToLiveSeconds="600"             memoryStoreEvictionPolicy="LFU"             />          </ehcache>

        private Cache gatewayIPCache ;   public void setGatewayIPCache(Cache gatewayIPCache) {  this.gatewayIPCache = gatewayIPCache;  }  private InterProtocolDAO interProtocolDAO ;        public void setInterProtocolDAO(InterProtocolDAO interProtocolDAO) {  this.interProtocolDAO = interProtocolDAO;  }         public boolean isExist(String wapip){               if (StringUtils.isEmpty(wapip)){           throw new NullPointerException("param 'wapid' can't be null ! ");       }          List<String> wapIPList = null ;         //如果缓存对象不存在，去数据库中获取             Element element = gatewayIPCache.get(wapip);             if (element == null) {                 wapIPList = interProtocolDAO.getInterProtocolsByType(InterProtocol.WAP_IP);                 element = new Element(wapip, wapIPList);                 gatewayIPCache.put(element);                 if (log.isInfoEnabled()) {                     log.info("----------数据列表加载到缓存中-------------");                 }              }              wapIPList = (List<String>) element.getValue();          return wapIPList.contains(wapip);                }