在config.php 同级的tags.php中的【app_init】添加：

"app\\api\\behavior\\CORS"  例下图：

 

然后在 app/behavior下新建文件：CORS.php，文件路径例下图：

 

 

CORS.php文件内容：

<?php
namespace app\api\behavior;

use think\Response;

class CORS {

    public function appInit(){
        if (request()->isOptions()) {
            header('Access-Control-Allow-Origin:*');
            header('Access-Control-Allow-Headers:Accept,Referer,Host,Keep-Alive,User-Agent,X-Requested-With,Cache-Control,Content-Type,Cookie,token');
            header('Access-Control-Allow-Credentials:true');
            header('Access-Control-Allow-Methods:GET,POST,OPTIONS,PUT,DELETE');
            header('Access-Control-Max-Age:1728000');
            header('Content-Type:text/plain charset=UTF-8');
            header('Content-Length: 0', true);
            header('status: 204');
            header('HTTP/1.0 204 No Content');
        }else{
            header('Access-Control-Allow-Origin:*');
            header('Access-Control-Allow-Headers:Accept,Referer,Host,Keep-Alive,User-Agent,X-Requested-With,Cache-Control,Content-Type,Cookie,token');
            header('Access-Control-Allow-Credentials:true');
            header('Access-Control-Allow-Methods:GET,POST,OPTIONS');
        }
    }

}

 

over！！！