Symfony2-无法自动加载JMS序列化程序注释

Question

We are having issues autoloading JMSSerializer annotations in a symfony app. We are getting: [Semantical Error] The annotation "@JMS\\Serializer\\Annotation\\XMLRoot" in class Class\\Namespace\\ClassName does not exist, or could not be auto-loaded.

We are using the standard symfony/composer autoloader, have "jms/serializer-bundle": "~1.0" required in composer.json, and include the bundle in the AppKernel. Other annotations (eg symfony route annotations) work correctly.

We tried forcing to load the jms serializer annotations by modifying app_dev.php to:

<?php

use Doctrine\Common\Annotations\AnnotationRegistry;
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#configuration-and-setup for more information
//umask(0000);

$loader = require_once __DIR__.'/../app/bootstrap.php.cache';
Debug::enable();

require_once __DIR__.'/../app/AppKernel.php';

AnnotationRegistry::registerLoader(array($loader, 'loadClass'));

AnnotationRegistry::registerFile("/srv/httpd/project/vendor/jms/serializer/src/JMS/Serializer/Annotation/XmlRoot.php");
AnnotationRegistry::registerAutoloadNamespace('JMS\Serializer', "/srv/httpd/project/vendor/jms/serializer/src/");

$kernel = new AppKernel('dev', true);
$kernel->loadClassCache();
$request = Request::createFromGlobals();
$response = $kernel->handle($request);
$response->send();
$kernel->terminate($request, $response);

We tried several variations of the AnnotationRegistery::... calls. AnnotationRegistry::registerFile("/srv/httpd/project/vendor/jms/serializer/src/JMS/Serializer/Annotation/XmlRoot.php"); seems to register correctly the XmlRoot annotations but other JMS annotations still fail.

Thanks.

Answer 1

you have to edit the vendor/autoload.php file,like below:

// autoload.php @generated by Composer
use Doctrine\Common\Annotations\AnnotationRegistry;

require_once __DIR__ . '/composer/autoload_real.php';

$loader = ComposerAutoloaderInitb6ddad78dfb081b4ad47d02feb034c25::getLoader();
AnnotationRegistry::registerLoader([$loader, 'loadClass']);

return $loader;

Answer 2

Try to import namespace to Your Entity with an alias:

<?php

use JMS\Serializer\Annotation as JMS

class SomeClass
{
    /**
     * @JMS/XMLRoot
     */
    public $someProperty
}

Got same problem with Doctrine elsewhere.

Answer 3

Another possible reason for the same error:-

[Semantical Error] The annotation "@JMS\Serializer\Annotation\XMLRoot" in
class Class\Namespace\ClassName does not exist, or could not be auto-loaded.

is a missing call to AnnotationRegistry::registerLoader .

Answer 4

See documentation here - http://jmsyst.com/libs/serializer/master/configuration

If you are using the standalone library and you want to use annotations, the annotation registry must be initialized:

Doctrine\\Common\\Annotations\\AnnotationRegistry::registerLoader('class_exists');