接口没有注册，导致构造的时候出错

今天在做MVC项目的时候，使用微软企业库的缓存接口icachemanager,抛出如下异常

The current type, Microsoft.Practices.EnterpriseLibrary.Caching.ICacheManager, is an interface and cannot be constructed. Are you missing a type mapping?

经过检查，发现要在webconfig里面注册

  <configSections>

  <section name="cachingConfiguration" type="Microsoft.Practices.EnterpriseLibrary.Caching.Configuration.CacheManagerSettings, Microsoft.Practices.EnterpriseLibrary.Caching" requirePermission="false"/>

光using还没有用