Spring Ehcache MBean 监控

Question

我正在使用 Spring 4.0.3.RELEASE 和 EHcache 2.8.1。在 JBoss 7.1.1 上

使用applicationContext.xml 中的以下配置，我的缓存运行良好。

<cache:annotation-driven/>

<bean id="cacheManager" class="org.springframework.cache.ehcache.EhCacheCacheManager">
   <property name="cacheManager" ref="ehcache"/>
</bean>

<bean id="ehcache" class="org.springframework.cache.ehcache.EhCacheManagerFactoryBean">
   <property name="configLocation" value="/WEB-INF/ehcache.xml"/>
</bean>

现在我想用 MBean 添加监控功能。我将applicationContext.xml 中的配置更改如下-添加了2个新bean“managementService”和“mbeanServer”，没有其他更改。 这是当前配置。

<cache:annotation-driven/>

<bean id="managementService"
        class="net.sf.ehcache.management.ManagementService"
        init-method="init"
        destroy-method="dispose">

        <constructor-arg ref="cacheManager"/>
        <constructor-arg ref="mbeanServer"/>
        <constructor-arg index="2" value="true"/>
        <constructor-arg index="3" value="true"/>
        <constructor-arg index="4" value="true"/>
        <constructor-arg index="5" value="true"/>
 </bean>

<bean id="cacheManager" class="org.springframework.cache.ehcache.EhCacheCacheManager">
   <property name="cacheManager" ref="ehcache"/>
</bean>

<bean id="ehcache" class="org.springframework.cache.ehcache.EhCacheManagerFactoryBean">
   <property name="configLocation" value="/WEB-INF/ehcache.xml"/>
</bean>    

<bean id="mbeanServer" class="org.springframework.jmx.support.MBeanServerFactoryBean">
    <property name="locateExistingServerIfPossible" value="true"/>
</bean>

使用此配置，我在应用程序服务器启动时收到以下错误。

14:05:32,208 ERROR [org.springframework.web.context.ContextLoader] (MSC service thread 1-1) Context initialization failed: org.springframework.beans.factory.UnsatisfiedDependencyException: **Error creating bean with name 'managementService'** defined in ServletContext resource [/WEB-INF/applicationContext.xml]: Unsatisfied dependency expressed through constructor argument with index 0 of type [net.sf.ehcache.CacheManager]: Could not convert constructor argument value of type [org.springframework.cache.ehcache.EhCacheCacheManager] to required type [net.sf.ehcache.CacheManager]: Failed to convert value of type 'org.springframework.cache.ehcache.EhCacheCacheManager' to required type 'net.sf.ehcache.CacheManager'; nested exception is java.lang.IllegalStateException: **Cannot convert value of type [org.springframework.cache.ehcache.EhCacheCacheManager] to required type [net.sf.ehcache.CacheManager]**: no matching editors or conversion strategy found

Related cause: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'managementService' defined in ServletContext resource [/WEB-INF/applicationContext.xml]: Unsatisfied dependency expressed through constructor argument with index 0 of type [net.sf.ehcache.CacheManager]: Could not convert constructor argument value of type [org.springframework.cache.ehcache.EhCacheCacheManager] to required type [net.sf.ehcache.CacheManager]: Failed to convert value of type 'org.springframework.cache.ehcache.EhCacheCacheManager' to required type 'net.sf.ehcache.CacheManager'; nested exception is java.lang.IllegalStateException: Cannot convert value of type [org.springframework.cache.ehcache.EhCacheCacheManager] to required type [net.sf.ehcache.CacheManager]: no matching editors or conversion strategy found

Answer 1

您应该将ehcache bean 传递给managementService bean 的构造函数，而不是cacheManager。如果您查看cacheManager 的定义，ehcache bean 将作为cacheManager 传递。工厂 bean 将提供一个 net.sf.ehcache.CacheManager 的实例。