获取ajax请求数据，报错“模块不存在”
<?php
namespace app\exme\controller;
use think\Controller;
use think\captcha\Captcha;
use think\Db;
use think\Request;

class Login extends Controller{
public function login(){
return $this->fetch();
}
//登录验证
public function yzlogin(){
$params = $this->request->param();
return json_encode($params);
}