问题描述
我正在尝试开发一个与node.js集成的flutter应用程序.但是我不知道如何实现它,任何人都可以帮助我
I am trying to develop a flutter app which is integrated with node.js . But I don't know how to implement it anyone can help me with this
推荐答案
如果创建RESTful api服务器,则可以用任何所需的语言编写它,而Flutter应用程序可以使用它来检索和发布数据.因此,只需创建一个Node.js服务器并通过Flutter通过http对其进行请求.
If you create a RESTful api server, you can write it in any language you want, and your Flutter app can use it to retrieve and post data. So simply create a Node.js server and make requests to it via Flutter over http.
以下是如何在Flutter中创建HTTP客户端并将其用于连接到服务器端点并获得响应的示例:
Here is an example of how to create an HTTP client in Flutter and use it to connect to a server endpoint and get a response:
//Import dart library
import 'dart:io';
_getUserApi() async {
var httpClient = new HttpClient();
var uri = new Uri.https('yourserverurl.com', '/your/endpoint/whatever');
var request = await httpClient.getUrl(uri);
var response = await request.close();
var responseBody = await response.transform(UTF8.decoder).join();
return responseBody;
}
如果将服务器配置为以JSON格式返回数据(这在Node.js中最常见),则需要解析JSON响应并将其转换为应用程序要使用的类型化形式.您可以自己编写构造函数,也可以使用Dart库(例如json_serializable或Built_value)来完成此操作.
If you configure your server to return data in JSON format (as is most common with Node.js), you will need to parse the JSON response and convert it to a typed form to be used by your application. You can do this either by writing the constructors yourself, or by using a Dart library like json_serializable or built_value.
这里是一个非常关于使用这些方法的好文章.
Here is a very good article about using each of these methods.
反序列化JSON之后,就可以使用Flutter小部件中的数据了.
Once you have deserialized your JSON, you can use the data in your Flutter widget.
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