feat:更新美食记录表单

lib/apis/session.dart

@@ -1,10 +1,13 @@
+import 'package:flutter_common/utils/http_utils.dart';
+import 'package:food_hub_app/config/app_config.dart';
 import 'package:food_hub_app/models/session.dart';
-import 'package:food_hub_app/utils/http_util.dart';
+
+final httpUtil = HttpUtil(baseUrl: AppConfig.baseApiUrl);
 
 Future<Session> loginApi(String username, String password) {
-  return HttpUtil().post<Session>(
+  return httpUtil.post<Session>(
     "/session",
     queryParameters: {"username": username, "password": password},
     converter: (data) => Session.fromJson(data),
   );
-}
+}