CAKEPHP将domain.com/s?searchFld=xxxx路由到domain.com/s/searchFld/xxxx

I am running cakephp 2.4.6 and my search results page url is www.domain.com/s?searchFld=xxxx.

I do not want to use 301/30 htaccess redirect because I read that using special characters may affect SEO and SERP CTR rate, as users tend to avoid clicking URLs with special characters.

So where in cakephp can I change the search result from www.domain.com/s?searchFld=xxxx to www.domain.com/search/xxxx

Here is the routes.php file, so how can I fix that in routers.php

Router::connect('/', array('controller' => 'pages', 'action' => 'display', 'home'));

CakePlugin::routes();

require CAKE . 'Config' . DS . 'routes.php';