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namespace App\Http\Controllers;

use App\Http\Requests;
use App\Http\Controllers\Controller;
use Illuminate\Http\Request;
use Input;
use Validator;

class ImageController extends Controller {
    /**
     * Store an image.
     *
     * @return simple JSON response message
     */
    public function store(Request $r)
    {
        $image = Input::file('file');
        $validator = Validator::make([$image], ['image' => 'required']);
        if ($validator->fails()) {
            return $this->errors(['message' => 'Not an image.', 'code' => 400]);
        }
        $destinationPath = storage_path() . '/uploads';
        if(!$image->move($destinationPath, $image->getClientOriginalName())) {
            return $this->errors(['message' => 'Error saving the file.', 'code' => 400]);
        }
        return response()->json(['success' => true], 200);
    }
}

取自 https://github.com/danialfarid/ng-file-upload/wiki/PHP-Laravel-5-controller-example