게시물 요청에 게시물 데이터를 전달하기 위해 301 또는 302가 필요한 경우는 무엇입니까?

<code class="php"><?php

namespace Ts\Middleware;

use Psr\Http\Message\RequestInterface as Request;
use Psr\Http\Message\ResponseInterface as Response;
use Interop\Container\ContainerInterface;

/**
 * 兼容的地址，将原有的动态地址转化为伪静态地址
 *
 * @package default
 * @author 
 **/
class CompatibleURL
{
    protected $ci;

    public function __construct(ContainerInterface $ci) {
        $this->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 <lovevipdsw@outlook.com>
     **/
    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
</code>

<code class="php"><?php

namespace Ts\Middleware;

use Psr\Http\Message\RequestInterface as Request;
use Psr\Http\Message\ResponseInterface as Response;
use Interop\Container\ContainerInterface;

/**
 * 兼容的地址，将原有的动态地址转化为伪静态地址
 *
 * @package default
 * @author 
 **/
class CompatibleURL
{
    protected $ci;

    public function __construct(ContainerInterface $ci) {
        $this->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 <lovevipdsw@outlook.com>
     **/
    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
</code>