如何从Slim 4中间件进行重定向？

use Psr\Http\Message\ResponseInterface as Response;
use Psr\Http\Message\ServerRequestInterface as Request;
use Slim\Factory\AppFactory;

require __DIR__ . '/vendor/autoload.php';

// 创建Slim应用程序
$app = AppFactory::create();

// 添加中间件
$app->add(function (Request $request, Response $response, $next) {
    // 执行重定向到指定URL
    return $response->withHeader('Location', '/new-url')->withStatus(301);
});

// 定义路由
$app->get('/new-url', function (Request $request, Response $response, $args) {
    // 处理重定向后的请求
    $response->getBody()->write('重定向成功！');
    return $response;
});

// 运行应用程序
$app->run();