xtu_mall/app/common/middleware/CommonInit.php

<?php
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// +----------------------------------------------------------------------
// | 初始化中间件配置
// +----------------------------------------------------------------------
declare (strict_types = 1);

namespace app\common\middleware;

use Closure;
use think\facade\Config;
use think\facade\Env;
use think\Request;
use think\Response;

class CommonInit
{
    /**
     * 框架初始化.
     *
     * @param Request $request
     * @param Closure $next
     *
     * @return Response
     */
    public function handle($request, Closure $next)
    {
        // 设置mbstring字符编码
        mb_internal_encoding('UTF-8');
        //设置DEBUG环境
        $this->initDebugEnv();
        // Form别名
        if (!class_exists('Form')) {
            class_alias('form\\Form', 'Form');
        }

        return $next($request);
    }

    /**
     * 调试模式缓存
     */
    private function initDebugEnv()
    {
        if (Env::get('APP_DEBUG')) {
            // 如果是调试模式将version置为当前的时间戳可避免缓存
            Config::set(['version' => time()], 'site');
        }
    }
}