lihai-oa/app/home/validate/UserCheck.php

<?php
/**
 * @copyright Copyright (c) 2021 勾股工作室
 * @license https://opensource.org/licenses/GPL-3.0
 * @link https://www.gougucms.com
 */

namespace app\home\validate;

use think\Validate;

class UserCheck extends Validate
{
    protected $rule = [
        'username' => 'require',
        'password' => 'require',
        'captcha'  => 'captcha',
    ];

    protected $message = [
        'username.require' => '用户名不能为空',
        'password.require' => '密码不能为空',
        'captcha.require'  => '验证码不能为空',
        'captcha.captcha'  => '验证码不正确',
    ];
}