ehcache注解全面解析

通过ehcache以编程方式使用缓存：

跟上面的方式相同，但是缓存通过ehcache去管理，当然比使用map有N多种好处，比如缓存太大了快达到上限之后，将哪一部分缓存清除出去。这种方式完全是通过代码的方式使用ehcache缓存，虽然自由，却也很麻烦；有些比如单纯的场景下，不需要如此麻烦，直接通过注解就行了。

以前在Spring项目中要通过注解的方式使用缓存，比如借助一个jar包：ehcache-spring-annotations.jar，可以在googlecode上面下载，不过已经很久没有更新过了。

 

 

 <?xml version="1.0" encoding="UTF-8"?>
 <beans xmlns="http://www.springframework.org/schema/beans"
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"
     xmlns:tx="http://www.springframework.org/schema/tx" xmlns:osgi="http://www.springframework.org/schema/osgi"
     xmlns:ehcache="http://ehcache-spring-annotations.googlecode.com/svn/schema/ehcache-spring"
     xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
         http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd
         http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
         http://www.springframework.org/schema/osgi http://www.springframework.org/schema/osgi/spring-osgi-1.2.xsd
         http://ehcache-spring-annotations.googlecode.com/svn/schema/ehcache-spring http://ehcache-spring-annotations.googlecode.com/svn/schema/ehcache-spring/ehcache-spring-1.1.xsd">

     <context:component-scan
         base-package="com.mpr.mprsp.mcrc.service.mcrs.precedencecode" />
     <!-- ehcache config Start -->
     <ehcache:annotation-driven />
     <ehcache:config cache-manager="cacheManager">
         <ehcache:evict-expired-elements
             interval="60" />
     </ehcache:config>
     <bean id="cacheManager"
         class="org.springframework.cache.ehcache.EhCacheManagerFactoryBean">
         <property name="configLocation" value="osgibundlejar:/META-INF/ehcache/ehcache.xml" />
     </bean>
     <!-- ehcache config End -->

     <tx:annotation-driven transaction-manager="txManager" />

     <bean id="sqlSession" class="org.mybatis.spring.SqlSessionTemplate">
         <constructor-arg ref="sqlSessionFactory" />
     </bean>

     <!-- 定时任务开始 -->
     <!-- 线程执行器配置，用于任务注册 -->
     <bean id="executor"
         class="org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor">
         <property name="corePoolSize" value="10" />
         <property name="maxPoolSize" value="100" />
         <property name="queueCapacity" value="500" />
     </bean>

     <!-- 业务对象 -->
     <bean id="timerTask"
         class="com.mpr.mprsp.mcrc.service.mcrs.precedencecode.internal.TimerTask" />

     <!-- 调度业务 update by wangtao 20130715 -->
     <bean id="jobDetail"
         class="org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean">
         <property name="targetObject" ref="timerTask" />
         <property name="targetMethod" value="serviceTimerTask" />
     </bean>

     <!-- 测试 -->
     <bean id="taskTrigger" class="org.springframework.scheduling.quartz.SimpleTriggerBean">
         <property name="jobDetail" ref="jobDetail" />
         <!-- 延迟10秒启动 -->
         <property name="startDelay" value="10000" />
         <!-- 每隔20秒执行一次 -->
         <property name="repeatInterval" value="20000" />
     </bean>

     <!-- 增加调度触发器 -->
     <bean id="cronTrigger" class="org.springframework.scheduling.quartz.CronTriggerBean">
         <property name="jobDetail" ref="jobDetail" />
         <!-- 每天晚上11点触发 -->
         <property name="cronExpression" value="0 0 23 * * ?" />
     </bean>

     <!-- 增加调度触发器 add by wangtao 20130715 -->
     <bean id="autoApplyCodeCronTrigger" class="org.springframework.scheduling.quartz.CronTriggerBean">
         <property name="jobDetail" ref="jobDetail" />
         <!-- 每天中午12点触发 -->
         <property name="cronExpression" value="0 0 12 * * ?" />
     </bean>

     <!-- 设置调度 update by wangtao 20130715 -->
     <bean class="org.springframework.scheduling.quartz.SchedulerFactoryBean">
         <property name="triggers">
             <list>
                 <!-- <ref bean="cronTrigger" /> -->
                 <ref bean="cronTrigger" />
             </list>
         </property>
         <property name="taskExecutor" ref="executor" />
     </bean>
     <!-- 定时任务结束 -->

     <!-- 引入服务 -->
     <!-- 引入文件服务器同步 -->
     <osgi:reference id="fileSyncManager"
         interface="com.mpr.mprsp.mcrc.service.mcrs.upload.service.IFileSyncManager" />
     <!-- 引入系统配置项 -->
     <osgi:reference id="sysConfigManager"
         interface="com.mpr.mprsp.mcrc.service.mcrs.configuration.service.ISysConfigManager" />
     <!-- 引入邮件管理 -->
     <osgi:reference id="mailSendManager"
         interface="com.mpr.mprsp.mcrc.email.service.IMailSendManager" />
     <!-- 引入SqlSessionFactory -->
     <osgi:reference id="sqlSessionFactory"
         interface="org.apache.ibatis.session.SqlSessionFactory" bean-name="sqlSessionFactory" />
     <!-- 引入DataSourceTransactionManager -->
     <osgi:reference id="txManager"
         interface="org.springframework.jdbc.datasource.DataSourceTransactionManager"
         bean-name="txManager" />
     <!-- 引入ParametersMapBuilder -->
     <osgi:reference id="parametersMapBuilder"
         interface="com.isoftstone.agiledev.core.query.mybatis.ParametersMapBuilder"
         bean-name="parametersMapBuilder" />

     <!-- 暴露服务 -->
     <!-- 暴露MPR出版物内容类型 -->
     <osgi:service ref="publicationContentTypeManager"
         interface="com.mpr.mprsp.mcrc.service.mcrs.precedencecode.service.IPublicationContentTypeManager" />
     <!-- 暴露语种管理 -->
     <osgi:service ref="languageManager"
         interface="com.mpr.mprsp.mcrc.service.mcrs.precedencecode.service.ILanguageManager" />
     <!-- 暴露码段管理 -->
     <osgi:service ref="mprCodeSegmentManager"
         interface="com.mpr.mprsp.mcrc.service.mcrs.precedencecode.service.IMprCodeSegmentManager" />
     <!-- 暴露预警阀值 -->
     <osgi:service ref="mprCodeThresholdManager"
         interface="com.mpr.mprsp.mcrc.service.mcrs.precedencecode.service.IMprCodeThresholdManager" />
     <!-- 暴露MPR前置码生效信息管理 -->
     <osgi:service ref="caroperInfoSyncManager"
         interface="com.mpr.mprsp.mcrc.service.mcrs.precedencecode.service.ICaroperInfoSyncManager" />
     <!-- 暴露MPR前置码文件管理 -->
     <osgi:service ref="mprFileManager"
         interface="com.mpr.mprsp.mcrc.service.mcrs.precedencecode.service.IMprFileManager" />
     <!-- 暴露撤销记录管理 -->
     <osgi:service ref="revocationStatsManager"
         interface="com.mpr.mprsp.mcrc.service.mcrs.precedencecode.service.IRevocationStatsManager" />
     <!-- 暴露废除记录管理 -->
     <osgi:service ref="abolishStatsManager"
         interface="com.mpr.mprsp.mcrc.service.mcrs.precedencecode.service.IAbolishStatsManager" />
     <!-- 暴露图书业务管理 -->
     <osgi:service ref="publicationManager"
         interface="com.mpr.mprsp.mcrc.service.mcrs.precedencecode.service.IPublicationManager" />
     <!-- 暴露 期刊业务管理 -->
     <osgi:service ref="periodicalManager"
         interface="com.mpr.mprsp.mcrc.service.mcrs.precedencecode.service.IPeriodicalManager" />
     <!-- 暴露报纸业务管理 -->
     <osgi:service ref="newsPaperManager"
         interface="com.mpr.mprsp.mcrc.service.mcrs.precedencecode.service.INewsPaperManager" />
     <!-- 暴露音像业务管理 -->
     <osgi:service ref="audioManager"
         interface="com.mpr.mprsp.mcrc.service.mcrs.precedencecode.service.IAudioManager" />
     <!-- 暴露（组区）MPR出版物管理 -->
     <osgi:service ref="publicationAreaManager"
         interface="com.mpr.mprsp.mcrc.service.mcrs.precedencecode.service.IPublicationAreaManager" />
     <!-- MPR出版物视图服务类 -->
     <osgi:service ref="publicationViewManager"
         interface="com.mpr.mprsp.mcrc.service.mcrs.precedencecode.service.IPublicationViewManager" />
     <!-- MPR 资源类 -->
     <osgi:service ref="mprCodeResourceManager"
         interface="com.mpr.mprsp.mcrc.service.mcrs.precedencecode.service.IMprCodeResourceManager" />
     <!-- 关联关系管理 -->
     <osgi:service ref="isliMprCodeRelationManager"
         interface="com.mpr.mprsp.mcrc.service.mcrs.precedencecode.service.IIsliMprCodeRelationManager" />

      <!-- option 下拉选框数据 -->
     <osgi:service ref="optionManager"
         interface="com.mpr.mprsp.mcrc.service.mcrs.precedencecode.service.IOptionManager" />

     <osgi:service ref="apiPublicationService"
         interface="com.mpr.mprsp.mcrc.service.mcrs.precedencecode.service.IApiPublicationService" />

     <!-- openservice 暴露前置编码服务接口 -->
     <osgi:service ref="openService"
         interface="com.mpr.mprsp.mcrc.service.mcrs.precedencecode.service.IOpenService" />

     <osgi:reference id="sysLogManager"
         interface="com.mpr.mprsp.mcrc.service.mcrs.system.service.ISysLogManager"/>

     <osgi:reference id="statsMprManager"
         interface="com.mpr.mprsp.mcrc.service.mcrs.statistics.service.IStatsMpr" />
     <osgi:reference id="statsPublication"
         interface="com.mpr.mprsp.mcrc.service.mcrs.statistics.service.IStatsPublication" />
     <osgi:reference id="statsPublisher"
         interface="com.mpr.mprsp.mcrc.service.mcrs.statistics.service.IStatsPublisher" />
     <osgi:reference id="publisherGroupManager"
         interface="com.mpr.mprsp.mcrc.service.mcrs.publisher.service.IPublisherGroupManager" />
 </beans>

共有两个注解：

• @Cacheabele      ：指定方法使用缓存
• @TriggersRemove  ：从缓存中移除对象

在查询的方法上使用缓存：

    @SuppressWarnings("unchecked")
    @Cacheable(cacheName = "publicationsCache")
    public List<PublicationViewInfo> query(PublicationViewInfoParams params)
        throws Exception

 

在删除或更新的方法上清空缓存：

@Override
    @TriggersRemove(cacheName = {"publicationsCache"},
                    when = When.AFTER_METHOD_INVOCATION,
                    removeAll = true)
    public int hiddenResource(Long resourceId, String publicationType,
            Boolean isHidden) throws Exception {