feat:修改签名方式

@@ -134,8 +134,12 @@ class Api
         $header = [];
         $body = '';
         $fullPath = $path;
-        if ($method == 'GET' && count($param) > 0) {
-            $fullPath = $path . '?' . http_build_query($param);
+        if ($method == 'GET') {
+            if (count($param) > 0) {
+                $fullPath = $path . '?' . http_build_query($param);
+            } else {
+                $fullPath = $path;
+            }
         } else {
             $header[] = 'Content-Type: application/json';
             $body = json_encode($param);