symfony2:类加载/命名空间处理-prod/dev环境之间的差异

symfony2的app_dev.php和app.php或dev/prod环境（symfony 2.8.4）在类自动加载和命名空间处理方面到底有什么区别？

当我在开发环境中通过app_dev.php运行它时，一切都很好，当我在prod中通过app.php运行它时我得到一个内部服务器错误500（symfony的prod.log中没有写入任何内容）。查看apache的error.log，我看到：

PHP Fatal error:  Class 'SSMCRM''Common''ProductionTemplateMapper' not found in /var/[...]

是的，我清除了戳缓存。。。

app.php：

use Symfony'Component'HttpFoundation'Request;
/**
 * @var Composer'Autoload'ClassLoader
 */
$loader = require __DIR__.'/../app/autoload.php';
include_once __DIR__.'/../app/bootstrap.php.cache';
// Enable APC for autoloading to improve performance.
// You should change the ApcClassLoader first argument to a unique prefix
// in order to prevent cache key conflicts with other applications
// also using APC.
/*
$apcLoader = new Symfony'Component'ClassLoader'ApcClassLoader(sha1(__FILE__), $loader);
$loader->unregister();
$apcLoader->register(true);
*/
//require_once __DIR__.'/../app/AppCache.php';
$kernel = new AppKernel('prod', false);
$kernel->loadClassCache();
//$kernel = new AppCache($kernel);
// When using the HttpCache, you need to call the method in your front controller instead of relying on the configuration parameter
//Request::enableHttpMethodParameterOverride();
$request = Request::createFromGlobals();
$response = $kernel->handle($request);
$response->send();
$kernel->terminate($request, $response);

app_dev.php:

<?php
use Symfony'Component'HttpFoundation'Request;
use Symfony'Component'Debug'Debug;
// If you don't want to setup permissions the proper way, just uncomment the following PHP line
// read http://symfony.com/doc/current/book/installation.html#checking-symfony-application-configuration-and-setup
// for more information
//umask(0000);
// This check prevents access to debug front controllers that are deployed by accident to production servers.
// Feel free to remove this, extend it, or make something more sophisticated.
if (isset($_SERVER['HTTP_CLIENT_IP'])
    || isset($_SERVER['HTTP_X_FORWARDED_FOR'])
    || !(in_array(@$_SERVER['REMOTE_ADDR'], array('127.0.0.1', 'fe80::1', '::1',
                                                  '192.168.33.1', //for vagrant box
        )) || php_sapi_name() === 'cli-server')
) {
    header('HTTP/1.0 403 Forbidden');
    exit('You are not allowed to access this file. Check '.basename(__FILE__).' for more information.');
}
/**
 * @var Composer'Autoload'ClassLoader $loader
 */
$loader = require __DIR__.'/../app/autoload.php';
Debug::enable();
$kernel = new AppKernel('dev', true);
$kernel->loadClassCache();
$request = Request::createFromGlobals();
$response = $kernel->handle($request);
$response->send();
$kernel->terminate($request, $response);

在autoload.php中，我将我们的遗留类添加到加载器中：

$loader->add('SSMCRM', __DIR__.'/../web/legacy/classes');