diff --git a/src/web/Request.php b/src/web/Request.php
index 6a6c570..312e8d9 100644
--- a/src/web/Request.php
+++ b/src/web/Request.php
@@ -137,7 +137,7 @@ public function getIsFlash()
     public function getRawBody()
     {
         if ($this->_rawBody === null) {
-            $this->_rawBody = file_get_contents("php://input");
+            $this->_rawBody = $this->swooleRequest->rawContent();
             return $this->_rawBody;
         }
 
@@ -770,4 +770,4 @@ private function validateCsrfTokenInternal($clientSuppliedToken, $trueToken)
 
         return $security->unmaskToken($clientSuppliedToken) === $security->unmaskToken($trueToken);
     }
-}
\ No newline at end of file
+}