Laravel只有Hello World Working

Question

我遇到了以下问题。我已经像文档中那样新安装了Laravel。 当我访问我的链接时，它显示“你到了”。所以它应该工作。 然后我上传了一个名为UserController.php的新控制器。 代码如下：

<?php
use App\Transformer\CheckinTransformer;
use App\Transformer\UserTransformer;
class UserController extends ApiController
{
    public function index()
    {
        return "Oh hai!";
    }
}

然后我也让ApiController处理了一些错误。代码如下：

<?php
use League\Fractal\Resource\Collection;
use League\Fractal\Resource\Item;
use League\Fractal\Manager;
use Symfony\Component\Yaml\Dumper as YamlDumper;
class ApiController extends Controller
{
    protected $statusCode = 200;
    const CODE_WRONG_ARGS = 'GEN-FUBARGS';
    const CODE_NOT_FOUND = 'GEN-LIKETHEWIND';
    const CODE_INTERNAL_ERROR = 'GEN-AAAGGH';
    const CODE_UNAUTHORIZED = 'GEN-MAYBGTFO';
    const CODE_FORBIDDEN = 'GEN-GTFO';
    const CODE_INVALID_MIME_TYPE = 'GEN-UMWUT';
    public function __construct(Manager $fractal)
    {
        $this->fractal = $fractal;
        // Are we going to try and include embedded data?
        $this->fractal->setRequestedScopes(explode(',', Input::get('embed')));
        $this->fireDebugFilters();
    }
    public function fireDebugFilters()
    {
        $this->beforeFilter(function () {
            Event::fire('clockwork.controller.start');
        });
        $this->afterFilter(function () {
            Event::fire('clockwork.controller.end');
        });
    }
    /**
     * Getter for statusCode
     *
     * @return mixed
     */
    public function getStatusCode()
    {
        return $this->statusCode;
    }

    /**
     * Setter for statusCode
     *
     * @param int $statusCode Value to set
     *
     * @return self
     */
    public function setStatusCode($statusCode)
    {
        $this->statusCode = $statusCode;
        return $this;
    }

    protected function respondWithItem($item, $callback)
    {
        $resource = new Item($item, $callback);
        $rootScope = $this->fractal->createData($resource);
        return $this->respondWithArray($rootScope->toArray());
    }
    protected function respondWithCollection($collection, $callback)
    {
        $resource = new Collection($collection, $callback);
        $rootScope = $this->fractal->createData($resource);
        return $this->respondWithArray($rootScope->toArray());
    }
    protected function respondWithArray(array $array, array $headers = [])
    {
        $mimeTypeRaw = Input::server('HTTP_ACCEPT', '*/*');
        // If its empty or has */* then default to JSON
        if ($mimeTypeRaw === '*/*') {
            $mimeType = 'application/json';
        } else {
             // You will probably want to do something intelligent with charset if provided.
            // This chapter just assumes UTF8 everything everywhere.
            $mimeParts = (array) explode(';', $mimeTypeRaw);
            $mimeType = strtolower($mimeParts[0]);
        }
        switch ($mimeType) {
            case 'application/json':
                $contentType = 'application/json';
                $content = json_encode($array);
                break;
            case 'application/x-yaml':
                $contentType = 'application/x-yaml';
                $dumper = new YamlDumper();
                $content = $dumper->dump($array, 2);
                break;
            default:
                $contentType = 'application/json';
                $content = json_encode([
                    'error' => [
                        'code' => static::CODE_INVALID_MIME_TYPE,
                        'http_code' => 415,
                        'message' => sprintf('Content of type %s is not supported.', $mimeType),
                    ]
                ]);
        }
        $response = Response::make($content, $this->statusCode, $headers);
        $response->header('Content-Type', $contentType);
        return $response;
    }
    protected function respondWithError($message, $errorCode)
    {
        if ($this->statusCode === 200) {
            trigger_error(
                "You better have a really good reason for erroring on a 200...",
                E_USER_WARNING
            );
        }
        return $this->respondWithArray([
            'error' => [
                'code' => $errorCode,
                'http_code' => $this->statusCode,
                'message' => $message,
            ]
        ]);
    }
    /**
     * Generates a Response with a 403 HTTP header and a given message.
     *
     * @return  Response
     */
    public function errorForbidden($message = 'Forbidden')
    {
        return $this->setStatusCode(403)->respondWithError($message, self::CODE_FORBIDDEN);
    }
    /**
     * Generates a Response with a 500 HTTP header and a given message.
     *
     * @return  Response
     */
    public function errorInternalError($message = 'Internal Error')
    {
        return $this->setStatusCode(500)->respondWithError($message, self::CODE_INTERNAL_ERROR);
    }

    /**
     * Generates a Response with a 404 HTTP header and a given message.
     *
     * @return  Response
     */
    public function errorNotFound($message = 'Resource Not Found')
    {
        return $this->setStatusCode(404)->respondWithError($message, self::CODE_NOT_FOUND);
    }
    /**
     * Generates a Response with a 401 HTTP header and a given message.
     *
     * @return  Response
     */
    public function errorUnauthorized($message = 'Unauthorized')
    {
        return $this->setStatusCode(401)->respondWithError($message, self::CODE_UNAUTHORIZED);
    }
    /**
     * Generates a Response with a 400 HTTP header and a given message.
     *
     * @return  Response
     */
    public function errorWrongArgs($message = 'Wrong Arguments')
    {
        return $this->setStatusCode(400)->respondWithError($message, self::CODE_WRONG_ARGS);
    }
}

我已将/ users路由添加到routes.php文件中，如下所示：

<?php

Route::get('/', function()
{
    return View::make('hello');
});
Route::get('/users', 'UserController@index');

但是当我现在尝试访问/ public / users时 我只收到这个错误： ReflectionException Class League \ Fractal \ Manager不存在

到目前为止我尝试删除了vendor文件夹和composer.lock并再次安装了但是：composer install --prefer-source而不是composer install 但它没有改变任何东西。

我现在真的不知道什么是错的，我希望你能帮助我。