Dart - 打印所有响应标头

Question

我的Dart代码通过post方法将表单发送到我的GAE python服务器。我想在响应中看到服务器返回所有标头。但我无法执行此操作。你能帮忙吗？

    void _httpRequest(url, datas){
HttpRequest request = new HttpRequest() 
  ..open("POST", url, async: true)
  ..setRequestHeader("Content-Type", "application/x-www-form-urlencoded")
  ..responseType = "";

// add an event handler that is called when the request finishes
request.onReadyStateChange.listen((_) {
  if (request.status == 200) {
      _onSuccess(request.responseText);
  }else{
      _handleTheError(request.responseText);
  }
});

   request.send(datas);
}

void _onSuccess(msg){
    print("success : $msg");
}

void _handleTheError(msg){
    print("error : $msg");
}

Answer 1

request.responseHeaders.forEach((k, v) {
  print('Header: $k, value: $v');
});