fixed post

src/request.js

@@ -60,7 +60,7 @@
                     url: url,
                     method: method,
                     params: dataGet,
-                    data: $.param(dataPost),
+                    data: dataPost == null ? null : $.param(dataPost),
                     headers: {
                         'Content-Type': "application/x-www-form-urlencoded"
                     }