Yii::$app->request->post() 是不是取不到值

app-hd/controllers/MtController.php

@@ -24,6 +24,7 @@ class MtController extends BaseController
     public function actionNewOrder()
     {
         $post = Yii::$app->request->post();
+        Yii::info('newOrder: ' . json_encode($post));
         if(!empty($post)) {
             Yii::info('newOrder: ' . json_encode($post));
         }
@@ -32,8 +33,9 @@ class MtController extends BaseController
             Yii::info('newOrder: ' . json_encode($get));
         }
         if(!empty($_POST)) {
-            Yii::info('newOrder: ' . json_encode($_POST));
+            Yii::info('$_POST newOrder: ' . json_encode($_POST));
         }
+        Yii::info('$_POST newOrder: ' . json_encode($_POST));
 
         return;
 
@@ -51,6 +53,7 @@ class MtController extends BaseController
     public function actionCancelOrder()
     {
         $post = Yii::$app->request->post();
+        Yii::info('cancelOrder: ' . json_encode($post));
         if(!empty($post)) {
             Yii::info('cancelOrder: ' . json_encode($post));
         }
@@ -59,8 +62,9 @@ class MtController extends BaseController
             Yii::info('cancelOrder: ' . json_encode($get));
         }
         if(!empty($_POST)) {
-            Yii::info('cancelOrder: ' . json_encode($_POST));
+            Yii::info('$_POST cancelOrder: ' . json_encode($_POST));
         }
+        Yii::info('$_POST cancelOrder: ' . json_encode($_POST));
 
         return;
     }