Spring 3.1 @Cacheable - 方法仍然执行

Question

我正在尝试实现Spring 3.1缓存,如此处和此处所述,但它似乎不起作用:我的方法每次都会运行,即使它被标记为@cacheable.我究竟做错了什么？

我已经将它移动到junit测试用例中,并使用自己的配置文件将其与我的应用程序的其余部分隔离开来,但问题仍然存在.以下是相关文件:

弹簧试验servlet.xml中

<beans xmlns="http://www.springframework.org/schema/beans"
   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
   xmlns:cache="http://www.springframework.org/schema/cache"
   xmlns:p="http://www.springframework.org/schema/p"
   xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
    http://www.springframework.org/schema/cache http://www.springframework.org/schema/cache/spring-cache.xsd">
<cache:annotation-driven />

<bean id="cacheManager" class="org.springframework.cache.ehcache.EhCacheCacheManager" p:cache-manager-ref="ehcache"/>
<bean id="ehcache" class="org.springframework.cache.ehcache.EhCacheManagerFactoryBean"
      p:config-location="classpath:ehcache.xml"/>
</beans>

ehcache.xml中

<ehcache>
<diskStore path="java.io.tmpdir"/>
<cache name="cache"
       maxElementsInMemory="100"
       eternal="false"
       timeToIdleSeconds="120"
       timeToLiveSeconds="120"
       overflowToDisk="true"
       maxElementsOnDisk="10000000"
       diskPersistent="false"
       diskExpiryThreadIntervalSeconds="120"
       memoryStoreEvictionPolicy="LRU"/>

</ehcache>

MyTest.java

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration({"classpath:spring-test-servlet.xml"})
@Component
public class MyTest extends TestCase {

    @Test
    public void testCache1(){
        for(int i = 0; i < 5; i++){
            System.out.println("Calling someMethod...");
            System.out.println(someMethod(0));
        }
    }

    @Cacheable("testmethod")
    private int someMethod(int val){
        System.out.println("Not from cache");
        return 5;
    }
}

相关的Pom条目:( spring-version = 3.1.1.RELEASE)

    <dependency>
        <groupId>net.sf.ehcache</groupId>
        <artifactId>ehcache-core</artifactId>
        <version>2.5.1</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-context-support</artifactId>
        <version>${spring.version}</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-context</artifactId>
        <version>${spring.version}</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-core</artifactId>
        <version>${spring.version}</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-test</artifactId>
        <version>${spring.version}</version>
    </dependency>

当我运行测试时,Spring会发出一些调试消息,看起来我的缓存初始化没有错误

DEBUG: config.ConfigurationHelper - No CacheManagerEventListenerFactory class specified. Skipping...
DEBUG: ehcache.Cache - No BootstrapCacheLoaderFactory class specified. Skipping...
DEBUG: ehcache.Cache - CacheWriter factory not configured. Skipping...
DEBUG: config.ConfigurationHelper - No CacheExceptionHandlerFactory class specified. Skipping...
DEBUG: store.MemoryStore - Initialized net.sf.ehcache.store.MemoryStore for cache
DEBUG: disk.DiskStorageFactory - Failed to delete file cache.data
DEBUG: disk.DiskStorageFactory - Failed to delete file cache.index
DEBUG: disk.DiskStorageFactory - Matching data file missing (or empty) for index file. Deleting index file /var/folders/qg/xwdvsg6x3mx_z_rcfvq7lc0m0000gn/T/cache.index
DEBUG: disk.DiskStorageFactory - Failed to delete file cache.index
DEBUG: ehcache.Cache - Initialised cache: cache
DEBUG: config.ConfigurationHelper - CacheDecoratorFactory not configured. Skipping for 'cache'.
DEBUG: config.ConfigurationHelper - CacheDecoratorFactory not configured for defaultCache. Skipping for 'cache'.

但调试输出显示对someMethod的方法调用和someMethod内部的print语句之间没有缓存检查.

有什么我想念的吗？

Answer 1

来自http://static.springsource.org/spring/docs/3.1.x/spring-framework-reference/html/cache.html

在代理模式(默认设置)下,只拦截通过代理进入的外部方法调用.这意味着实际上,自调用目标对象中的一个方法调用目标对象的另一个方法,即使被调用的方法用@Cacheable标记,也不会在运行时导致实际的缓存 - 考虑使用aspectj模式这个案例.

和

方法可见性和@Cacheable/ @CachePut/@CacheEvict

使用代理时,您应该仅将@Cache注释应用于具有公共可见性的方法.

1. 您可以someMethod在同一目标对象中自行调用.
2. 你的@Cacheable方法不公开.