SpringBoot 整合Ehcache3
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[oschina 地址]
http://git.oschina.net/cmlbeliever/SpringBootLearning
[github 地址]
https://github.com/cmlbeliever/SpringBootLearning
最近研究了下服务器端缓存处理，并整合到SpringBoot中，已提交到branch-ehcache3分支。
网上使用的大部分是ehcache2的版本，groupId为net.sf.ehcache，升级到3以后groupId改成了org.ehcache，所以代码改变还是比较大的，根据官网上的博客地址
http://www.ehcache.org/blog/2016/05/18/ehcache3_jsr107_spring.html
按照官网的博客进行整合即可，总结步骤如下：
1、导入pom依赖
<dependency>
<groupId>org.ehcache</groupId>
<artifactId>ehcache</artifactId>
<version>3.2.0</version>
</dependency>
<dependency>
<groupId>javax.cache</groupId>
<artifactId>cache-api</artifactId>
<version>1.0.0</version>
</dependency>
<!-- https://mvnrepository.com/artifact/ch.qos.logback/logback-core -->
<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-core</artifactId>
<version>1.1.9</version>
</dependency>
2、导入ehcache配置文件
<config xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance'
xmlns='http://www.ehcache.org/v3' xmlns:jsr107='http://www.ehcache.org/v3/jsr107'>
<service>
<jsr107:defaults>
<jsr107:cache name="people" template="heap-cache" />
</jsr107:defaults>
</service>
<cache-template name="heap-cache">
<listeners>
<listener>
<class>com.cml.springboot.framework.cache3.EventLogger</class>
<event-firing-mode>ASYNCHRONOUS</event-firing-mode>
<event-ordering-mode>UNORDERED</event-ordering-mode>
<events-to-fire-on>CREATED</events-to-fire-on>
<events-to-fire-on>UPDATED</events-to-fire-on>
<events-to-fire-on>EXPIRED</events-to-fire-on>
<events-to-fire-on>REMOVED</events-to-fire-on>
<events-to-fire-on>EVICTED</events-to-fire-on>
</listener>
</listeners>
<resources>
<heap unit="entries">2000</heap>
<offheap unit="MB">100</offheap>
</resources>
</cache-template>
</config>3、添加log监听类
package com.cml.springboot.framework.cache3;
import org.ehcache.event.CacheEvent;
import org.ehcache.event.CacheEventListener;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
*
* @author GGIB
*/
public class EventLogger implements CacheEventListener<Object, Object> {
private static final Logger LOGGER = LoggerFactory.getLogger(EventLogger.class);
@Override
public void onEvent(CacheEvent<? extends Object, ? extends Object> event) {
LOGGER.info("Event: " + event.getType() + " Key: " + event.getKey() + " old value: " + event.getOldValue()
+ " new value: " + event.getNewValue());
}
}4、添加cache配置类，这里添加cacheName为people
package com.cml.springboot.framework.cache3;
import java.util.concurrent.TimeUnit;
import javax.cache.CacheManager;
import javax.cache.configuration.MutableConfiguration;
import javax.cache.expiry.Duration;
import javax.cache.expiry.TouchedExpiryPolicy;
import org.ehcache.spi.loaderwriter.CacheLoaderWriter;
import org.springframework.boot.autoconfigure.cache.JCacheManagerCustomizer;
import org.springframework.stereotype.Component;
import org.springframework.web.servlet.mvc.condition.ProducesRequestCondition;
@Component
public class Ehcache3Config implements JCacheManagerCustomizer {
private static final String NAME_CACHE = "people";
@Override
public void customize(CacheManager cacheManager) {
cacheManager.createCache(NAME_CACHE,
new MutableConfiguration<>()
.setExpiryPolicyFactory(TouchedExpiryPolicy.factoryOf(new Duration(TimeUnit.SECONDS, 10)))
.setStoreByValue(true).setStatisticsEnabled(true));
}
}
按照上述步骤配置即可，然后添加单元测试，可以从log上看出缓存是否使用到了。
单元测试类 com.cml.springboot.cache.Ehcache3Test
测试结果：
====================================================
2017-01-28 16:30:05.732 INFO 41240 --- [ main] o.s.t.web.servlet.TestDispatcherServlet : FrameworkServlet '': initialization completed in 1120 ms
2017-01-28 16:30:06.213 INFO 41240 --- [ main] o.s.s.c.ThreadPoolTaskScheduler : Initializing ExecutorService 'taskScheduler'
2017-01-28 16:30:06.562 INFO 41240 --- [ main] o.s.c.support.DefaultLifecycleProcessor : Starting beans in phase 0
2017-01-28 16:30:06.563 INFO 41240 --- [ main] o.s.i.endpoint.EventDrivenConsumer : Adding {logging-channel-adapter:_org.springframework.integration.errorLogger} as a subscriber to the 'errorChannel' channel
2017-01-28 16:30:06.563 INFO 41240 --- [ main] o.s.i.channel.PublishSubscribeChannel : Channel 'application:-1.errorChannel' has 1 subscriber(s).
2017-01-28 16:30:06.563 INFO 41240 --- [ main] o.s.i.endpoint.EventDrivenConsumer : started _org.springframework.integration.errorLogger
2017-01-28 16:30:06.579 INFO 41240 --- [ main] com.cml.springboot.cache3.Ehcache3Test : Started Ehcache3Test in 7.565 seconds (JVM running for 8.36)
2017-01-28 16:30:06.886 INFO 41240 --- [ main] c.c.s.s.service.impl.UserServiceImpl : ====================read user from db=========
2017-01-28 16:30:06.938 INFO 41240 --- [ main] c.c.s.sample.controller.CacheController : read data token=C78CE23552BC46328959C8C0AE391886,user:User [username=null, password=null, token=C78CE23552BC46328959C8C0AE391886, newToken=null, userId=1, birthday=1987-02-27T00:00:00.000+08:00, nickName=小明22]
2017-01-28 16:30:06.938 INFO 41240 --- [hcache [null]-0] c.c.s.framework.cache3.EventLogger : Event: CREATED Key: C78CE23552BC46328959C8C0AE391886 old value: null new value: User [username=null, password=null, token=C78CE23552BC46328959C8C0AE391886, newToken=null, userId=1, birthday=1987-02-27T00:00:00.000+08:00, nickName=小明22]
==============================
{"code":1,"user":{"token":"C78CE23552BC46328959C8C0AE391886","userId":1,"birthday":"19870227000000","nickName":"小明22"}}
=====================read data second==========================
2017-01-28 16:30:07.022 INFO 41240 --- [ main] c.c.s.sample.controller.CacheController : read data token=C78CE23552BC46328959C8C0AE391886,user:User [username=null, password=null, token=C78CE23552BC46328959C8C0AE391886, newToken=null, userId=1, birthday=1987-02-27T00:00:00.000+08:00, nickName=小明22]
==============================
{"code":1,"user":{"token":"C78CE23552BC46328959C8C0AE391886","userId":1,"birthday":"19870227000000","nickName":"小明22"}}
2017-01-28 16:30:07.031 INFO 41240 --- [ Thread-2] o.s.w.c.s.GenericWebApplicationContext : Closing org.springframework.web.context.support.GenericWebApplicationContext@17f62e33: startup date [Sat Jan 28 16:29:59 CST 2017]; root of context hierarchy
2017-01-28 16:30:07.035 INFO 41240 --- [ Thread-2] o.s.c.support.DefaultLifecycleProcessor : Stopping beans in phase 0
2017-01-28 16:30:07.036 INFO 41240 --- [ Thread-2] o.s.i.endpoint.EventDrivenConsumer : Removing {logging-channel-adapter:_org.springframework.integration.errorLogger} as a subscriber to the 'errorChannel' channel
2017-01-28 16:30:07.036 INFO 41240 --- [ Thread-2] o.s.i.channel.PublishSubscribeChannel : Channel 'application:-1.errorChannel' has 0 subscriber(s).
2017-01-28 16:30:07.037 INFO 41240 --- [ Thread-2] o.s.i.endpoint.EventDrivenConsumer : stopped _org.springframework.integration.errorLogger
2017-01-28 16:30:07.038 INFO 41240 --- [ Thread-2] o.s.s.c.ThreadPoolTaskScheduler : Shutting down ExecutorService 'taskScheduler'
2017-01-28 16:30:07.061 INFO 41240 --- [ Thread-2] org.ehcache.core.EhcacheManager : Cache 'people' removed from EhcacheManager.注：工程上分支branch-ehcache为ehcache2版本的配置。
步骤4只配置了内存缓存，至于文件缓存以及配置需要年后再研究，欢迎补充！
