如何将Flutter应用程序与Node.js集成

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

答

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.

如何将Flutter应用程序与Node.js集成

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