tp5 session_id 跨域

<?phpnamespace app\appApi\controller;header('Access-Control-Allow-Origin: *');header("Access-Control-Allow-Headers: Origin, X-Requested-With, Content-Type, Accept");header('Access-Control-Allow-Methods: GET, POST, PUT');use think\Controller;use think\Request;use think\Session;use app\admin\controller\CommPublic;class Index extends Controller{    public function __construct(Request $request)    {        parent::__construct($request);//        关闭session_star        Session::init([                'prefix'         => 'module',                'type'           => '',                'auto_start'     => false,//先关闭session        ]);       if (input('sid')) {

//登录时发送session_id给前端然后再让前端发送过来           session_id(input('sid'));       }          session_start();

//下面正常使用session('user_id');就可以的到user_id的值了    }

}