tp5 session_id 跨域

<?php
namespace 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);

//        關閉session_star
        Session::init([
                'prefix'         => 'module',
                'type'           => '',
                'auto_start'     => false,//先關閉session
        ]);

       if (input('sid')) {

	//登錄時發送session_id給前端然後再讓前端發送過來

           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

    }

}