优化网络库

netrain_flutter_app/lib/zhangfeng/LoginApi.dart

@@ -6,7 +6,7 @@ import 'Network/UrlPath.dart';
 class LoginApi {
   ///示例请求
   static loginRequest(Map<String, dynamic> param) {
-    return HttpManager.getInstance().request(UrlPath.baseUrl + 'auth/oauth/token', parameters: param, onResult: (data,errorMsg){
+    return HttpManager.getInstance().request('auth/oauth/token', parameters: param, onResult: (data,errorMsg){
       BaseHttpModel httpModel = data;
       print(httpModel.data);
     });

netrain_flutter_app/lib/zhangfeng/Network/HttpManager.dart

-import 'dart:collection';
-
 import 'package:dio/dio.dart';
 import 'package:netrain_flutter_app/zhangfeng/Network/BaseHttpModel.dart';
 import 'BaseHttpModel.dart';
 import 'UrlPath.dart';
-import 'dart:core';
 
 class HttpManager {
   static HttpManager _instance = HttpManager._internal();
@@ -16,7 +13,7 @@ class HttpManager {
   HttpManager._internal({String baseUrl}) {
     if (null == _dio) {
       _dio = new Dio(new BaseOptions(
-          baseUrl: UrlPath.baseUrl, connectTimeout: 15000,headers: new HashMap<String,String>()));
+          baseUrl: UrlPath.baseUrl, connectTimeout: 15000));
     }
   }