sprintmvc+shiro中的ehcache配置

<!-- 缓存管理器开始 -->  
    <bean id="cacheManager" class="org.apache.shiro.cache.ehcache.EhCacheManager">  
            <property name="cacheManager" ref="ehCacheManager"/>  
    </bean>  
    <bean id="ehCacheManager" class ="org.springframework.cache.ehcache.EhCacheManagerFactoryBean">  
        <property name="configLocation" value="classpath:ehcache/ehcache.xml" />  
        <property name="shared" value="true"></property>  
    </bean>

 <!-- 安全管理器 -->
    <bean id="securityManager" class="org.apache.shiro.web.mgt.DefaultWebSecurityManager">
        <property name="realm" ref="userRealm"/>
        <property name="sessionManager" ref="sessionManager"/>
        <property name="cacheManager" ref="cacheManager"/>
        <property name="rememberMeManager" ref="rememberMeManager"/>
    </bean>