详谈@Cacheable不起作用的原因:bean未序列化问题

<cache:annotation-driven cache-manager="springCacheManager" proxy-target-class="false"/>
<bean id="ehcacheManager" class="org.springframework.cache.ehcache.EhCacheManagerFactoryBean">
    <property name="configLocation" value="classpath:ehcache.xml"/>
    <property name="cacheManagerName" value="ehcache"/>
</bean>
<bean id="springCacheManager" class="org.springframework.cache.ehcache.EhCacheCacheManager">
    <property name="cacheManager" ref="ehcacheManager"/>
</bean>

@Component
public class CacheBean {
    @Cacheable(value="passwordRetryCache",key="#key")
    public String map(String key) {
        System.out.println("get value for key: "+key);
        return "value: "+key;
    }
    public String map2(String key) {
        return map(key);
    }
}
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = { "classpath:cache.xml" })
public class CacheTester {
    @Autowired CacheManager cacheManager;
    @Autowired CacheBean cacheBean;
    @Test public void cacheManager() {
        System.out.println(cacheManager);
    }
    @Test public void cacheAnnotation() {
        cacheBean.map("a");
        cacheBean.map("a");
        cacheBean.map("a");
        cacheBean.map("a");
        System.out.println(cacheManager.getCacheNames());
    }
}

<bean id="springCacheManager" class="com.itecheast.ite.domain.util.MyEhCacheCacheManager">
    <property name="cacheManager" ref="ehcacheManager"/>
</bean>

<bean id="springCacheManager" class="org.springframework.cache.support.CompositeCacheManager">
    <property name="cacheManagers">
        <list>
            <bean class="org.springframework.cache.ehcache.EhCacheCacheManager"></bean>
            <!-- <bean class="com.itecheast.ite.domain.util.MyEhCacheCacheManager"></bean> 这个会自动创建缓存空间 -->
        </list>
    </property>
    <property name="fallbackToNoOpCache" value="true"/>
</bean>

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = { "classpath:cache.xml" })
public class CacheTester {
    @Test public void cacheAnnotation() {
        this.map("a");
        this.map("a");
    }
    @Cacheable(value="passwordRetryCache",key="#key")
    public String map(String key) {
        System.out.println("get value for key: "+key);
        return "value: "+key;
    }
}

public class CacheBean {
    @Autowired ApplicationContext applicationContext;
    @Cacheable(value="passwordRetryCache",key="#key")
    public String map(String key) {  //方法不能为private，否则也没有缓存效果
        System.out.println("get value for key: "+key);
        return "value: "+key;
    }
    public String map2(String key) {
        CacheBean proxy = applicationContext.getBean(CacheBean.class);
        return proxy.map(key); //这里使用proxy调用map就可以缓存，而直接调用map则没有缓存
    }
}