diff --git a/application/api/behavior/RequestFilter.php b/application/api/behavior/RequestFilter.php
index e72d0c6..071cd11 100644
--- a/application/api/behavior/RequestFilter.php
+++ b/application/api/behavior/RequestFilter.php
@@ -21,7 +21,6 @@ class RequestFilter {
     /**
      * 默认行为函数
      * @author zhaoxiang <zhaoxiang051405@gmail.com>
-     * @return \think\Request
      * @throws \think\exception\DbException
      */
     public function run() {
diff --git a/thinkphp/library/think/Request.php b/thinkphp/library/think/Request.php
index 5f05b91..47f4ac8 100644
--- a/thinkphp/library/think/Request.php
+++ b/thinkphp/library/think/Request.php
@@ -692,10 +692,10 @@ class Request
     {
         if (empty($this->post)) {
             $content = $this->input;
-            if (empty($_POST) && false !== strpos($this->contentType(), 'application/json')) {
-                $this->post = (array) json_decode($content, true);
-            } else {
+            if(false !== strpos($this->contentType(), 'multipart/form-data')) {
                 $this->post = $_POST;
+            } else {
+                $this->post = (array) json_decode($content, true);
             }
         }
         if (is_array($name)) {