lianjie_admin/app/Admin/Controllers/AuthController.php

<?php

namespace App\Admin\Controllers;

use App\Models\AdminUsers;
use Dcat\Admin\Controllers\AuthController as BaseAuthController;
use Illuminate\Http\Request;

class AuthController extends BaseAuthController
{
    public function postLogin(Request $request)
    {
        $username = $request->post('username');
        //校验该帐号状态是否正常
        $adu = new AdminUsers();
        $adu = $adu->where(['username' => $username])->first();
        if ($adu && $adu->status == 0) {
            return $this->error('该帐号已被冻结,请联系管理员');
        }
        return parent::postLogin($request);
    }
}