我实际上将我的symfony 3.4项目升级到symfony 4.0 . 在使用composer update从我的gitlab存储库中克隆bundle之后，我有一个错误：
ClassNotFoundException
Attempted to load class "Kernel" from namespace "App".
Did you forget a "use" statement for "Symfony\Component\HttpKernel\Kernel"?
in index.php (line 32)
好的....简单...去index.php第32行......但是，内核是用App \ Kernel加载的，所以任何想法为什么我有这个错误或我可以搜索的地方？
谢谢您的帮助 .
的index.php
use App\Kernel;
use Symfony\Component\Debug\Debug;
use Symfony\Component\Dotenv\Dotenv;
use Symfony\Component\HttpFoundation\Request;
require __DIR__.'/../vendor/autoload.php';
// The check is to ensure we don't use .env in production
if (!isset($_SERVER['APP_ENV'])) {
(new Dotenv())->load(__DIR__.'/../.env');
}
if ($_SERVER['APP_DEBUG'] ?? ('prod' !== ($_SERVER['APP_ENV'] ?? 'dev'))) {
umask(0000);
Debug::enable();
}
// Request::setTrustedProxies(['0.0.0.0/0'], Request::HEADER_FORWARDED);
$kernel = new Kernel($_SERVER['APP_ENV'] ?? 'dev', $_SERVER['APP_DEBUG'] ?? ('prod' !== ($_SERVER['APP_ENV'] ?? 'dev')));
$request = Request::createFromGlobals();
$response = $kernel->handle($request);
$response->send();
$kernel->terminate($request, $response);
在“src”目录中，我有Kernel.php文件
namespace App;
use Symfony\Bundle\FrameworkBundle\Kernel\MicroKernelTrait;
use Symfony\Component\Config\Loader\LoaderInterface;
use Symfony\Component\DependencyInjection\ContainerBuilder;
use Symfony\Component\HttpKernel\Kernel as BaseKernel;
use Symfony\Component\Routing\RouteCollectionBuilder;
class Kernel extends BaseKernel
{
use MicroKernelTrait;
const CONFIG_EXTS = '.{php,xml,yaml,yml}';
.....
1 回答
Symfony 4使用文件夹“App”进行自动加载“psr-4” . 我试图改变它，但它没有成功 . 检查composer.json文件中的命名空间，在属性“autoload”中，然后检查“psr-4” . 也许你改了默认的 .