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。

  1 <?xml version="1.0" encoding="UTF-8"?>
  2 <beans xmlns="http://www.springframework.org/schema/beans"
  3     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"
  4     xmlns:tx="http://www.springframework.org/schema/tx" xmlns:osgi="http://www.springframework.org/schema/osgi"
  5     xmlns:ehcache="http://ehcache-spring-annotations.googlecode.com/svn/schema/ehcache-spring"
  6     xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd 
  7         http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd
  8         http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
  9         http://www.springframework.org/schema/osgi http://www.springframework.org/schema/osgi/spring-osgi-1.2.xsd
 10         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">
 11 
 12     <context:component-scan
 13         base-package="com.mpr.mprsp.mcrc.service.mcrs.precedencecode" />
 14     <!-- ehcache config Start -->
 15     <ehcache:annotation-driven />
 16     <ehcache:config cache-manager="cacheManager">
 17         <ehcache:evict-expired-elements
 18             interval="60" />
 19     </ehcache:config>
 20     <bean id="cacheManager"
 21         class="org.springframework.cache.ehcache.EhCacheManagerFactoryBean">
 22         <property name="configLocation" value="osgibundlejar:/META-INF/ehcache/ehcache.xml" />
 23     </bean>
 24     <!-- ehcache config End -->
 25 
 26     <tx:annotation-driven transaction-manager="txManager" />
 27 
 28     <bean id="sqlSession" class="org.mybatis.spring.SqlSessionTemplate">
 29         <constructor-arg ref="sqlSessionFactory" />
 30     </bean>
 31 
 32     <!-- 定时任务开始 -->
 33     <!-- 线程执行器配置，用于任务注册 -->
 34     <bean id="executor"
 35         class="org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor">
 36         <property name="corePoolSize" value="10" />
 37         <property name="maxPoolSize" value="100" />
 38         <property name="queueCapacity" value="500" />
 39     </bean>
 40 
 41     <!-- 业务对象 -->
 42     <bean id="timerTask"
 43         class="com.mpr.mprsp.mcrc.service.mcrs.precedencecode.internal.TimerTask" />
 44 
 45     <!-- 调度业务 update by wangtao 20130715 -->
 46     <bean id="jobDetail"
 47         class="org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean">
 48         <property name="targetObject" ref="timerTask" />
 49         <property name="targetMethod" value="serviceTimerTask" />
 50     </bean>
 51 
 52     <!-- 测试 -->
 53     <bean id="taskTrigger" class="org.springframework.scheduling.quartz.SimpleTriggerBean">
 54         <property name="jobDetail" ref="jobDetail" />
 55         <!-- 延迟10秒启动 -->
 56         <property name="startDelay" value="10000" />
 57         <!-- 每隔20秒执行一次 -->
 58         <property name="repeatInterval" value="20000" />
 59     </bean>
 60 
 61     <!-- 增加调度触发器 -->
 62     <bean id="cronTrigger" class="org.springframework.scheduling.quartz.CronTriggerBean">
 63         <property name="jobDetail" ref="jobDetail" />
 64         <!-- 每天晚上11点触发 -->
 65         <property name="cronExpression" value="0 0 23 * * ?" />
 66     </bean>
 67 
 68     <!-- 增加调度触发器 add by wangtao 20130715 -->
 69     <bean id="autoApplyCodeCronTrigger" class="org.springframework.scheduling.quartz.CronTriggerBean">
 70         <property name="jobDetail" ref="jobDetail" />
 71         <!-- 每天中午12点触发 -->
 72         <property name="cronExpression" value="0 0 12 * * ?" />
 73     </bean>
 74 
 75     <!-- 设置调度 update by wangtao 20130715 -->
 76     <bean class="org.springframework.scheduling.quartz.SchedulerFactoryBean">
 77         <property name="triggers">
 78             <list>
 79                 <!-- <ref bean="cronTrigger" /> -->
 80                 <ref bean="cronTrigger" />
 81             </list>
 82         </property>
 83         <property name="taskExecutor" ref="executor" />
 84     </bean>
 85     <!-- 定时任务结束 -->
 86 
 87     <!-- 引入服务 -->
 88     <!-- 引入文件服务器同步 -->
 89     <osgi:reference id="fileSyncManager"
 90         interface="com.mpr.mprsp.mcrc.service.mcrs.upload.service.IFileSyncManager" />
 91     <!-- 引入系统配置项 -->
 92     <osgi:reference id="sysConfigManager"
 93         interface="com.mpr.mprsp.mcrc.service.mcrs.configuration.service.ISysConfigManager" />
 94     <!-- 引入邮件管理 -->
 95     <osgi:reference id="mailSendManager"
 96         interface="com.mpr.mprsp.mcrc.email.service.IMailSendManager" />
 97     <!-- 引入SqlSessionFactory -->
 98     <osgi:reference id="sqlSessionFactory"
 99         interface="org.apache.ibatis.session.SqlSessionFactory" bean-name="sqlSessionFactory" />
100     <!-- 引入DataSourceTransactionManager -->
101     <osgi:reference id="txManager"
102         interface="org.springframework.jdbc.datasource.DataSourceTransactionManager"
103         bean-name="txManager" />
104     <!-- 引入ParametersMapBuilder -->
105     <osgi:reference id="parametersMapBuilder"
106         interface="com.isoftstone.agiledev.core.query.mybatis.ParametersMapBuilder"
107         bean-name="parametersMapBuilder" />
108 
109     <!-- 暴露服务 -->
110     <!-- 暴露MPR出版物内容类型 -->
111     <osgi:service ref="publicationContentTypeManager"
112         interface="com.mpr.mprsp.mcrc.service.mcrs.precedencecode.service.IPublicationContentTypeManager" />
113     <!-- 暴露语种管理 -->
114     <osgi:service ref="languageManager"
115         interface="com.mpr.mprsp.mcrc.service.mcrs.precedencecode.service.ILanguageManager" />
116     <!-- 暴露码段管理 -->
117     <osgi:service ref="mprCodeSegmentManager"
118         interface="com.mpr.mprsp.mcrc.service.mcrs.precedencecode.service.IMprCodeSegmentManager" />
119     <!-- 暴露预警阀值 -->
120     <osgi:service ref="mprCodeThresholdManager"
121         interface="com.mpr.mprsp.mcrc.service.mcrs.precedencecode.service.IMprCodeThresholdManager" />
122     <!-- 暴露MPR前置码生效信息管理 -->
123     <osgi:service ref="caroperInfoSyncManager"
124         interface="com.mpr.mprsp.mcrc.service.mcrs.precedencecode.service.ICaroperInfoSyncManager" />
125     <!-- 暴露MPR前置码文件管理 -->
126     <osgi:service ref="mprFileManager"
127         interface="com.mpr.mprsp.mcrc.service.mcrs.precedencecode.service.IMprFileManager" />
128     <!-- 暴露撤销记录管理 -->
129     <osgi:service ref="revocationStatsManager"
130         interface="com.mpr.mprsp.mcrc.service.mcrs.precedencecode.service.IRevocationStatsManager" />
131     <!-- 暴露废除记录管理 -->
132     <osgi:service ref="abolishStatsManager"
133         interface="com.mpr.mprsp.mcrc.service.mcrs.precedencecode.service.IAbolishStatsManager" />
134     <!-- 暴露图书业务管理 -->
135     <osgi:service ref="publicationManager"
136         interface="com.mpr.mprsp.mcrc.service.mcrs.precedencecode.service.IPublicationManager" />
137     <!-- 暴露 期刊业务管理 -->
138     <osgi:service ref="periodicalManager"
139         interface="com.mpr.mprsp.mcrc.service.mcrs.precedencecode.service.IPeriodicalManager" />
140     <!-- 暴露报纸业务管理 -->
141     <osgi:service ref="newsPaperManager"
142         interface="com.mpr.mprsp.mcrc.service.mcrs.precedencecode.service.INewsPaperManager" />
143     <!-- 暴露音像业务管理 -->
144     <osgi:service ref="audioManager"
145         interface="com.mpr.mprsp.mcrc.service.mcrs.precedencecode.service.IAudioManager" />
146     <!-- 暴露（组区）MPR出版物管理 -->
147     <osgi:service ref="publicationAreaManager"
148         interface="com.mpr.mprsp.mcrc.service.mcrs.precedencecode.service.IPublicationAreaManager" />
149     <!-- MPR出版物视图服务类 -->
150     <osgi:service ref="publicationViewManager"
151         interface="com.mpr.mprsp.mcrc.service.mcrs.precedencecode.service.IPublicationViewManager" />
152     <!-- MPR 资源类 -->
153     <osgi:service ref="mprCodeResourceManager"
154         interface="com.mpr.mprsp.mcrc.service.mcrs.precedencecode.service.IMprCodeResourceManager" />
155     <!-- 关联关系管理 -->
156     <osgi:service ref="isliMprCodeRelationManager"
157         interface="com.mpr.mprsp.mcrc.service.mcrs.precedencecode.service.IIsliMprCodeRelationManager" />
158         
159      <!-- option 下拉选框数据 -->
160     <osgi:service ref="optionManager"
161         interface="com.mpr.mprsp.mcrc.service.mcrs.precedencecode.service.IOptionManager" />
162     
163     <osgi:service ref="apiPublicationService"
164         interface="com.mpr.mprsp.mcrc.service.mcrs.precedencecode.service.IApiPublicationService" />
165         
166         
167         
168     <!-- openservice 暴露前置编码服务接口 -->
169     <osgi:service ref="openService"
170         interface="com.mpr.mprsp.mcrc.service.mcrs.precedencecode.service.IOpenService" />
171         
172     <osgi:reference id="sysLogManager" 
173         interface="com.mpr.mprsp.mcrc.service.mcrs.system.service.ISysLogManager"/>
174         
175     <osgi:reference id="statsMprManager"
176         interface="com.mpr.mprsp.mcrc.service.mcrs.statistics.service.IStatsMpr" />
177     <osgi:reference id="statsPublication"
178         interface="com.mpr.mprsp.mcrc.service.mcrs.statistics.service.IStatsPublication" />
179     <osgi:reference id="statsPublisher"
180         interface="com.mpr.mprsp.mcrc.service.mcrs.statistics.service.IStatsPublisher" />
181     <osgi:reference id="publisherGroupManager"
182         interface="com.mpr.mprsp.mcrc.service.mcrs.publisher.service.IPublisherGroupManager" />
183 </beans>

View Code

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 {