thinkphp获取axios提交的参数

一

use think\facadeRequest;
$param = Request::instance()->param();
        $username = $param['username'];
        $password = $param['password'];

二

use think\Request;
public function login(Request $request){//依赖注入
$data = [
                'username'=>$request->param('username'),
                'password'=>$request->param('password')
            ];
            }