huahuibao/app-mall/controllers/MainController.php

<?php

namespace mall\controllers;

use common\components\util;
use Yii;
use yii\web\HttpException;

class MainController extends BaseController
{
    public $guestAccess = ['index', 'error'];

    /**
     * 默认首页：供健康检查、域名根路径访问，避免 defaultRoute 404
     */
    public function actionIndex()
    {
        util::success([
            'service' => 'app-mall',
            'status' => 'ok',
        ]);
    }

    /**
     * 统一 JSON 错误输出（替代不存在的 site/error）
     */
    public function actionError()
    {
        $exception = Yii::$app->errorHandler->exception;
        if ($exception instanceof HttpException) {
            util::error($exception->statusCode, $exception->getMessage());
        }
        $message = $exception ? $exception->getMessage() : '服务器错误';
        util::fail($message);
    }
}