SpringMVC + Mybatis + Shiro + ehcache时缓存管理器报错。

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'shiroFilter' defined in class path resource [spring/spring-shiro-web.xml]: Cannot resolve reference to bean 'securityManager' while setting bean property 'securityManager'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'securityManager' defined in class path resource [spring/spring-shiro-web.xml]: Cannot resolve reference to bean 'userRealm' while setting bean property 'realm'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userRealm' defined in class path resource [spring/spring-shiro-web.xml]: Cannot resolve reference to bean 'credentialsMatcher' while setting bean property 'credentialsMatcher'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'credentialsMatcher' defined in class path resource [spring/spring-shiro-web.xml]: Cannot resolve reference to bean 'shiroCacheManager' while setting constructor argument; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'shiroCacheManager' defined in class path resource [spring/spring-shiro-web.xml]: Cannot resolve reference to bean 'ehCacheManager' while setting bean property 'cacheManager'; nested exception is org.springframework.beans.factory.BeanCreationException:org.springframework.beans.factory.BeanCreationE