我试图让EntityListeners在Symfony2.7中与ODM一起工作，但无济于事。a51.document.listener.store:class:A51\FilesystemBundle\EventListener\StoreEntityListenertags:-{name:doctrine.odm.mongodb.document_manager,event:postLoad,method:onPostLoad}arguments:[@a51.repo.file]和:fileRepository=$fileRepository;}publicfunctiononPos