找不到映射文件

我不明白我错在哪里了。这是抛出的异常

Doctrine''Common''Persistence''Mapping''MappingException抛出

找不到名为的映射文件类的"Acme.Repository.Pass.Onpassrequest.dcm.xml"Acme''Repository''Pass''Onpassrequest"。

我的文件夹结构如下

- index.php
- bootstrap.php
/src
  /xml
    -Acme.Repository.Pass.Onpassrequest.dcm.xml
  /Acme
    /Repository
      /Pass
        - Onpassrequest.php
    /Web
      /WebInterface
        - OnPassRequestWebInterface.php

我的引导程序.php是

<?php
use Doctrine'ORM'Tools'Setup;
use Doctrine'ORM'EntityManager;
use Symfony'Component'HttpFoundation'Request;
// Time zone;
date_default_timezone_set("Europe/Rome");
$loader = require "vendor/autoload.php";
// Create a simple "default" Doctrine ORM configuration for XML
$isDevMode = true;
$config = Setup::createXMLMetadataConfiguration(array("./src/xml"), $isDevMode);
// Database configuration parameters
$dbParams = array(
    'driver'    => 'pdo_mysql',
    'host'      => 'localhost',
    'user'      => 'uuu',
    'password'  => 'ppp',
    'dbname'    => 'ddd',
);
// Obtaining the entity manager
$em = EntityManager::create($dbParams, $config);

我想从中检索存储库/src/Acme/Web/WebInterface/OnPassRequestWebInterface.php文件调用getLayout（$user，$roles，$entirelist，$root，''Doctrine''ORM''EntityManager$em），在$roles中有"administrator"值，因此它调用getUserLayout

<?php
namespace Acme'Web'WebInterface;
class OnPassRequestWebInterface{
    /**
     * 
     * @param array $user
     * @param array $roles
     * @param array $entirelist
     * @param string $root
     * @param 'Doctrine'ORM'EntityManager $em
     */
    public static function getLayout($user, $roles, $entirelist, $root, 'Doctrine'ORM'EntityManager $em){
        self::$user = $user;
        self::$roles = $roles;
        self::$entirelist = $entirelist;
        self::$root = $root;
        self::$em = $em;
        if(in_array("administrator", self::$roles)){
            self::getUserLayout();
        } else {
        }

    }

    public static function getUserLayout($period = "P2W"){
        $date = new 'DateTime();
        $date->add(new 'DateInterval($period));
        $qb = self::$em->createQueryBuilder();
        $qb->select("r")
            ->from("''Acme''Repository''Pass''Onpassrequest", "r")
            ->where("r.userId = :userId AND r.eventdate >= NOW() AND r.eventdate <= :enddate")
            ->orderBy("r.eventdate", "ASC")
            ->setParameters(array("userId"  =>  self::$user->ID,
                    "enddate"   =>  $date->format("Y-m-d")));
        $query = $qb->getQuery();
        $request = $query->getResult();
        $view = self::renderView("user-next-request.php", array($request), false);
        echo $view;
    }

知道吗？非常感谢。