Cache系列：spring-cache简单三步快速应用ehcache3.x-jcache缓存（spring4.x）

前言：本项目基于spring4.x构建，使用ehcache3.5.2和JCache(jsr107规范)

一、依赖

除了ehcache和cache-api外，注意引用spring-context-support

1.                    
2.                     <dependency>
3.                         <groupId>org.springframework</groupId>
4.                         <artifactId>spring-context-support</artifactId>
5.                         <version>4.3.16.RELEASE</version>
6.                     </dependency>
7.     <dependency>
8.     <groupId>org.ehcache</groupId>
9.     <artifactId>ehcache</artifactId>
10.     <version>3.5.2</version>
11. </dependency>
12. <dependency>
13.     <groupId>javax.cache</groupId>
14.     <artifactId>cache-api</artifactId>
15.     <version>1.0.0</version>
16. </dependency>

二、配置

1、ehcache配置

1. <?xml version="1.0" encoding="UTF-8"?>
2. <ehcache:config
3. xmlns:ehcache="http://www.ehcache.org/v3"
4. xmlns:jcache="http://www.ehcache.org/v3/jsr107">
5.  
6. <ehcache:service>
7. <jcache:defaults>
8. <jcache:cache name="default" template="myDefaultTemplate"/>
9. </jcache:defaults>
10. </ehcache:service>
11.  
12. <ehcache:cache alias="allCameraCache">
13. <ehcache:key-type copier="org.ehcache.impl.copy.SerializingCopier">java.lang.String</ehcache:key-type>
14. <ehcache:value-type copier="org.ehcache.impl.copy.SerializingCopier">java.lang.String</ehcache:value-type>
15. <ehcache:expiry>
16. <ehcache:tti unit="minutes">20</ehcache:tti><!-- 数据过期时间20分钟 -->
17. </ehcache:expiry>
18. <ehcache:heap unit="entries">200</ehcache:heap><!-- 最多缓存200个对象 -->
19. </ehcache:cache>
20.  
21. <!-- 使用模板，可以覆盖模板的属性 -->
22. <ehcache:cache alias="cameraCache" uses-template="myDefaultTemplate">
23. <ehcache:key-type>java.lang.Object</ehcache:key-type>
24. <ehcache:value-type>java.lang.Object</ehcache:value-type>
25. <ehcache:expiry>
26. <ehcache:tti unit="minutes">30</ehcache:tti><!-- 数据过期时间30分钟，覆盖模板默认属性 -->
27. </ehcache:expiry>
28. <ehcache:heap unit="entries">500</ehcache:heap><!-- 最多缓存500个对象 -->
29. </ehcache:cache>
30.  
31. <!-- 默认模板 -->
32. <ehcache:cache-template name="myDefaultTemplate">
33. <ehcache:expiry>
34. <ehcache:none/><!-- 缓存永不过期 -->
35. </ehcache:expiry>
36. </ehcache:cache-template>
37.  
38. </ehcache:config>

2、spring配置

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"
4. xmlns:context="http://www.springframework.org/schema/context"
5. xmlns:cache="http://www.springframework.org/schema/cache"
6. xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
7. http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd
8. http://www.springframework.org/schema/cache http://www.springframework.org/schema/cache/spring-cache.xsd">
9. <!--eguid博客地址：http://bog.eguid.cc-->
10. <cache:annotation-driven cache-manager="cacheManager" /><!--扫描cache注解，如果已有可以不要-->
11. <context:component-scan base-package="cc.eguid.cache" /><!--扫描路径 -->
12. <!-- jcache缓存 -->
13. <bean id="jCacheManager" class="org.springframework.cache.jcache.JCacheManagerFactoryBean">
14.     <property name="cacheManagerUri" value="classpath:config/ehcache.xml" /> <!--改成配置文件对应的路径-->
15. </bean>
16. <bean id="cacheManager" class="org.springframework.cache.jcache.JCacheCacheManager">
17. <property name="cacheManager" ref="jCacheManager" />
18. </bean>
19. </beans>

三、使缓存生效

1、注解方式使用

@Cacheable(value="cameraCache",key="#userid")

public String getCameraList(String userid,Integer otherparam) {

...

}

spring-cache的注解比较简单就不再赘述了。