关于axios跨域带cookie

axios  设置

withCredentials :true

axios.defaults.headers.post['Content-Type'] = 'application/x-www-form-urlencoded'

$u = $_SERVER['HTTP_REFERER'];
$u = preg_replace('#/$#', '', $u);
header("Access-Control-Allow-Origin:  " . $u);//$_SERVER['HTTP_REFERER']
header("Access-Control-Allow-Credentials:true ");
header("Access-Control-Allow-Methods: POST, GET, OPTIONS, PUT, DELETE");
header('Access-Control-Allow-Headers: X-Requested-With,X_Requested_With,X-Custom-Header,Origin,  Content-Type, Accept, Authorization');

后端设置Access-Control-Allow-Credentials:true后，要将Access-Control-Allow-Origin指定到具体的域，否则cookie不会带到客户端。