在package:html，dart:html，dart:io(HttpClient类)和package:http API之间进行选择以获取HTTP资源

问题描述

我意识到，目前至少有三个官方" Dart库允许我执行HTTP请求.而且，其中的三个库(dart:io(HttpClient类)，package:http和dart:html)分别具有不同的不兼容API.

I realized that currently there are at least three "official" Dart libraries that allow me to perform a HTTP request. What is more, three of those libraries (dart:io (class HttpClient), package:http and dart:html) have each a different, incompatible API.

到目前为止，package:html尚不提供此功能，但是在其GitHub页面上，我发现它旨在与dart:html实现100％API兼容性，因此最终将在其中添加这些方法.

As of today, package:html does not offer this functionality, but on its GitHub page I found it aims for 100% API compatibility with dart:html, so these methods will be added there eventually.

哪个程序包提供了最新的，与平台无关的API，可以在Dart中发出HTTP请求?

Which package provides the most future proof and platform independent API to issue a HTTP request in Dart?

是包:http吗?

import 'package:http/http.dart' as http;

var url = "http://example.com";
http.get(url)
    .then((response) {
  print("Response status: ${response.statusCode}");
  print("Response body: ${response.body}");
});

是dart:html/package:html吗?

Is it dart:html/package:html?

import 'dart:html';

HttpRequest.request('/example.json')
  .then((response) {
      print("Response status: ${response.status}");
      print("Response body: ${response.response}");
});

还是dart:io?

import 'dart:io';

var client = new HttpClient();
client.getUrl(Uri.parse("http://www.example.com/"))
    .then((HttpClientRequest request) {
      // Optionally set up headers...
      // Optionally write to the request object...
      // Then call close.
      ...
      return request.close();
    })
    .then((HttpClientResponse response) {
      print("Response status: ${response.statusCode}");
      print("Response body:");
      response.transform(UTF8.decoder).listen((contents) {
        print(contents);
      });
    });

比方说，我也想介绍Android.这也增加了package:sky( https://github.com/domokit/sky_sdk/).我承认这不是官方" Google图书馆.

Let's say I want to cover Android too. That adds package:sky in the mix as well (https://github.com/domokit/sky_sdk/). I admit that this is not "official" Google library.

import 'package:sky/framework/net/fetch.dart';

Response response = await fetch('http://example.com');
print(response.bodyAsString());

(即将成为)常规产品是 https://www.youtube.com/watch?v = t8xdEO8LyL8 .我想知道他们的 HTTP请求的故事是什么.某些事情告诉我，这将是迄今为止我们所见不到的另一种野兽.

What is (going to be) a regular product is https://www.youtube.com/watch?v=t8xdEO8LyL8. I wonder what their HTTP Request story is going to be. Something tells me it will be yet another different beast from all we have seen so far.

推荐答案

html包是HTML解析器，允许与HTML服务器端一起使用.我不希望它获得一些HttpRequest功能.

The html package is a HTML parser which allows to work with HTML server side. I wouldn't expect it to get some HttpRequest capabilities.

http软件包旨在为客户端和服务器Dart代码提供统一的API. dart:html中的API只是浏览器提供的API的包装. dart:io中的HttpRequest API的构建不受浏览器限制，因此与dart:html不同. package:http提供了一个统一的API，当在浏览器中运行时，它委派给dart:html；而在服务器上运行时，委派给dart:io.

The http package aims to provide a unified API for client and server Dart code. The API in dart:html is only a wrapper over the API the browser provides. The HttpRequest API in dart:io was built without browser restrictions and thus deviates from dart:html. package:http provides an unified API which delegates to dart:html when run in the browser and to dart:io when run on the server.

我认为package:http是面向未来和跨平台的，应该非常适合您的要求.

I think package:http is future proof and cross-platform and should be a good fit for your requirements.

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