yii2 定义友好404
1、frontend->config->main.php添加如下: 'errorHandler' => [ 'errorAction' => 'site/error', ], 2、frontend->views->site->error.php中添加如下:(注:可以自行发挥制作更漂亮的404页面) <?php use yii\helpers\Html; $this->title = $name; $this->context->layout = false; //不使用布局 ?> <div class="site-error"> <h1><?= Html::encode($this->title) ?></h1> <div class="alert alert-danger"> <?= nl2br(Html::encode($message)) ?> </div> </div>