function  getTest(Request $request){

        $token = 'zhenhaokeji';

        $data = $request->all();

        $signature = $data['signature'];

        $timestamp = $data['timestamp'];

        $nonce = $data['nonce'];

        $echostr = $data['echostr'];

        $arrtep = array($token, $timestamp, $nonce);

        sort($arrtep, SORT_STRING);

        $arrStr = implode($arrtep);

        $hashcode = sha1($arrStr);

        if($hashcode == $signature){

            return $echostr;

        }else{

            return false;

        }

    }