修改接口：获取广告1

app/Controller/WebController.php

@@ -85,7 +85,7 @@ class WebController extends AbstractController
     {
         $requireData = $this->request->all();
         $data = ['website_id'=>Context::get("SiteId")]; 
-        if($requireData['ad_tag']){
+        if(isset($requireData['ad_tag'])){
             $validator = $this->validationFactory->make(
                 $requireData,
                 [