Spring Ehcache3导致带有key-type和value-type的异常 [英] Spring Ehcache3 cause exception with with key-type and value-type

问题描述

我尝试在4.3版本的项目中使用 ehcache3 。
我配置了缓存管理器：

I try to use ehcache3 on project with spring 4.3. I configured cache manager:

<cache:annotation-driven />
<bean id="cacheManager" class="org.springframework.cache.jcache.JCacheCacheManager">
        <property name="cacheManager">
            <bean class="org.springframework.cache.jcache.JCacheManagerFactoryBean">
               <property name="cacheManagerUri" value="classpath:ehcache.xml"/>
            </bean>
        </property>
</bean>

ehcache.xml ：

<config
        xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance'
        xmlns='http://www.ehcache.org/v3'
        xmlns:jsr107='http://www.ehcache.org/v3/jsr107'
        xsi:schemaLocation="
        http://www.ehcache.org/v3 http://www.ehcache.org/schema/ehcache-core-3.0.xsd
        http://www.ehcache.org/v3/jsr107 http://www.ehcache.org/schema/ehcache-107-ext-3.0.xsd" >
    <service>
        <jsr107:defaults enable-statistics="true" enable-management="true"/>
    </service>
    <cache alias="customerSettings">
        <key-type>java.lang.Long</key-type>
        <expiry>
            <none/>
        </expiry>
        <resources>
            <heap>500</heap>
        </resources>
    </cache>
</config>

但是当我部署项目时，我有一个例外：

But when I deploy project, I have an exception:

Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'cacheManager' defined in ServletContext resource [/WEB-INF/spring/root-context.xml]: Invocation of init method failed; nested exception is java.lang.IllegalArgumentException: Cache [customerSettings] specifies key/value types. Use getCache(String, Class, Class)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1628)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:555)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483)
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)
    at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:351)
    ... 100 more
Caused by: java.lang.IllegalArgumentException: Cache [customerSettings] specifies key/value types. Use getCache(String, Class, Class)
    at org.ehcache.jsr107.Eh107CacheManager.getCache(Eh107CacheManager.java:297)
    at org.springframework.cache.jcache.JCacheCacheManager.loadCaches(JCacheCacheManager.java:105)
    at org.springframework.cache.support.AbstractCacheManager.initializeCaches(AbstractCacheManager.java:61)
    at org.springframework.cache.support.AbstractCacheManager.afterPropertiesSet(AbstractCacheManager.java:50)
    at org.springframework.cache.jcache.JCacheCacheManager.afterPropertiesSet(JCacheCacheManager.java:97)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1687)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1624)
    ... 107 more

如果我删除：

<key-type>java.lang.Long</key-type>

它工作正常，但缓存的keyType是Object，
需要做什么，我可以使用自己的密钥类型和值类型？

It's work fine, but the keyType of cache is Object, What is need to do, that I can use own key type and value types?

推荐答案

弹簧缓存未输入，所以它没有使用 Jcache（javax.cache）的类型化API / JSR-107缓存API）

既然你在ehcache.xml中指定了类型，Ehcache拒绝让Spring使用getCache的非类型签名（ ）

Now since you specified types in your ehcache.xml, Ehcache refused to let Spring use the non typed signature of getCache()

当你想到它时，如果你让Spring使用Ehcache（来自@CacheResult等例如，JCache注释），你必须让它为你选择什么是键和值类型 - 你不再需要指定类型。

When you think about it, if you let Spring use Ehcache (via @CacheResult and other JCache annotations for example), you have to let it choose for you what are the key and value types - it's no longer you who should specify types.

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