Question

我为桌面软件创建了一个API，以避免每次我想对HttpClient标头进行更改时进行编码和重建，但是我不知道如何创建自定义HttpRequestHeader列表并将其添加到HttpClient中。请求标头。

我正在寻找这样的解决方案：

clients.DefaultRequestHeaders = list_of_json_header_values;

这是到目前为止我发出请求的代码：

public static string DownloadSource(string link)
{
    try
    {
        HttpClientHandler hch = new HttpClientHandler();
        hch.Proxy = null;
        hch.UseProxy = false;

        using (HttpClient clients = new HttpClient(hch))
        {
            //clients.DefaultRequestHeaders = list_of_json_header_values; ???

            using (HttpResponseMessage response = clients.GetAsync(link).Result)
            {
                using (HttpContent content = response.Content)
                {
                    return content.ReadAsStringAsync().Result;
                }
            }
        }
    }
    catch (Exception _ex)
    {
        MessageBox.Show(_ex.ToString());
    }
}

这是我从JSON获取标头的方式：

var headers_json = "json here";
var objects = JObject.Parse(headers_json);

foreach (var item in objects["header_settings"])
{
    //list_of_json_header_values.Add(item.ToString()); ???
    Console.WriteLine(item.ToString());
}

控制台输出：

"Cache-Control": "no-cache"
"User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0"
"Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8"
"Accept-Language": "en-GB,en;q=0.5"

Answer 1

您可以创建如下扩展方法：

Started PUT "/rooms/undefined/connected" for 127.0.0.1 at 2019-01-06 09:29:13 -0800
Processing by RoomsController#connected as */*
  Parameters: {"room"=>{"name"=>"New_room"}, "room_id"=>"undefined"}

From: /Users/us186007/Desktop/WebApps/goldenyears/app/controllers/rooms_controller.rb @ line 39 RoomsController#connected:

    36: def connected
    37:     binding.pry
    38:     # @room = Room.find params[:id]
 => 39:     @room.update_attributes(params[:name])
    40: end

[1] pry(#<RoomsController>)> @room
=> nil

那么你可以做：

public static class HttpClientExtensions
{
    public static void AddHeadersFromJson(this HttpClient client, string json)
    {
        JObject obj = JObject.Parse(json);

        foreach (JProperty prop in obj["header_settings"].Children<JProperty>())
        {
            client.DefaultRequestHeaders.Add(prop.Name, (string)prop.Value);
        }
    }
}

从JObject

1 个答案: