Http 请求

HTML

<img id="cats"></img>

镖

import 'dart:html';

/// Stores the image in [blob] in the [ImageElement] of the given [selector].
void setImage(selector, blob) {
  FileReader reader = new FileReader();
  reader.onLoad.listen((fe) { 
    ImageElement image = document.querySelector(selector);
    image.src = reader.result;
  });
  reader.readAsDataUrl(blob);  
}

main() async {
  var url = "https://upload.wikimedia.org/wikipedia/commons/2/28/Tortoiseshell_she-cat.JPG";

  // Initiates a request and asynchronously waits for the result.
  var request = await HttpRequest.request(url, responseType: 'blob');
  var blob = request.response;
  setImage("#cats", blob);
}

例

请参阅 https://dartpad.dartlang.org/a0e092983f63a40b0b716989cac6969a 上的示例