php - 当post的请求需要301或者302这么携带post的数据呢

问题：因为我是已有程序迁移到slim框架上，所以，真对以前的动态地址做了withRedirect，代码如下：

ci = $ci;
    }

    /**
     * Compatible URL middleware invokable class.
     *
     * @param  \Psr\Http\Message\RequestInterface  $request  PSR7 request
     * @param  \Psr\Http\Message\ResponseInterface $response PSR7 response
     * @param  callable                            $next     Next middleware
     * @return \Psr\Http\Message\ResponseInterface
     * @author Seven Du 
     **/
    public function __invoke(Request $request, Response $response, callable $next)
    {
        $app = $request->getQueryParam('app');
        $mod = $request->getQueryParam('mod');
        $act = $request->getQueryParam('act');

        $param = [];

        if ($app !== null) {
            $param['app'] = $app;
        }

        if ($mod !== null) {
            $param['controller'] = $mod;
        }

        if ($act !== null) {
            $param['action'] = $act;
        }

        $router = $this->ci->get('router');
        $queryParam = $request->getQueryParams();

        unset($queryParam['app'], $queryParam['mod'], $queryParam['act']);

        $uri = $router->pathFor('apps', $param, $queryParam);

        if ($uri != $router->pathFor('apps', [], $queryParam)) {
            // permanently redirect paths with a trailing slash
            // to their non-trailing counterpart
            return $response->withRedirect((string) $uri, 301);
        }

        return $next($request, $response);
    }
} // END class CompatibleURL

而很多一些异步请求为post，301到新的地址后，直接丢失了post的数据，如图：

我记得重定向是可以携带post数据的，但是在slim中，这么从Response设置呢？请教！
感谢?！