相关疑难解决方法(0)

我一直在试图弄清楚如何读取httpclient调用的内容,我似乎无法得到它.我得到的响应状态是200,但我无法弄清楚如何获得返回的实际Json,这就是我所需要的!

以下是我的代码:

async Task<string> GetResponseString(string text)
{
    var httpClient = new HttpClient();

    var parameters = new Dictionary<string, string>();
    parameters["text"] = text;
    Task<HttpResponseMessage> response = 
        httpClient.PostAsync(BaseUri, new FormUrlEncodedContent(parameters));

    return await response.Result.Content.ReadAsStringAsync();
}

而我只是从一个方法调用它:

Task<string> result =  GetResponseString(text);

这就是我得到的

response Id = 89, Status = RanToCompletion, Method = "{null}", Result = "StatusCode: 200, ReasonPhrase: 'OK', Version: 1.1, Content: System.Net.Http.StreamContent, Headers:\r\n{\r\n Connection: keep-alive\r\n Date: Mon, 27 Oct 2014 21:56:43 GMT\r\n ETag: \"5a266b16b9dccea99d3e76bf8c1253e0\"\r\n Server: nginx/0.7.65\r\n Content-Length: 125\r\n Content-Type: application/json\r\n}" System.Threading.Tasks.Task<System.Net.Http.HttpResponseMessage>

更新:这是我目前的代码,根据Nathan的回复

    async Task<string> …

当请求具有Gzip压缩的页面时,我收到了很多以下错误:

System.IO.InvalidDataException:GZip页脚中的CRC与从解压缩数据计算的CRC不匹配

我正在使用本机GZipStream进行解压缩,正在寻找解决此问题的方法.考虑到这一点,是否有解决这个或另一个GZip库(免费？)的工作,它将正确处理这个问题？

我正在验证webResponse ContentEncoding是否为GZIP

更新5/11 简化的snippit

//Caller
public void SOSampleGet(string url) 
{
    // Initialize the WebRequest.
    webRequest = (HttpWebRequest)WebRequest.Create(url);
    webRequest.Method = WebRequestMethods.Http.Get;
    webRequest.KeepAlive = true;
    webRequest.Accept = "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8";
    webRequest.Headers.Add("Accept-Encoding", "gzip,deflate");
    webRequest.Referer = WebUtil.GetDomain(url);

    HttpWebResponse webResponse = (HttpWebResponse)webRequest.GetResponse();    

    using (Stream stream = GetStreamForResponse(webResponse, READTIMEOUT_CONST))
    {
        //use stream
    }
}

//Method
private static Stream GetStreamForResponse(HttpWebResponse webResponse, int readTimeOut)
{
    Stream stream;
    switch (webResponse.ContentEncoding.ToUpperInvariant())
    {
        case "GZIP":
            stream = new GZipStream(webResponse.GetResponseStream(), CompressionMode.Decompress);
            break;
        case "DEFLATE":
            stream = new DeflateStream(webResponse.GetResponseStream(), CompressionMode.Decompress);
            break;

        default: …

我有一个通用的对象列表.每个对象有9个字符串属性.我想将该列表转换为可以传递给datagridview的数据集......最好的方法是什么？

我正在构建一个Windows应用商店应用,但我坚持从API获取UTF-8响应.

这是代码:

using (HttpClient client = new HttpClient())
{
    Uri url = new Uri(BaseUrl + "/me/lists");

    HttpRequestMessage request = new HttpRequestMessage(HttpMethod.Get, url);
    request.Headers.Add("Accept", "application/json");
    HttpResponseMessage response = await client.SendRequestAsync(request);
    response.EnsureSuccessStatusCode();

    string responseString = await response.Content.ReadAsStringAsync();

    response.Dispose();
}

该reponseString总是包含奇怪的字符应该是像口音é,我试图使用流,但我在一些例子中发现的API无法在Windows RT存在.

编辑:改进代码,仍然是同样的问题.

我正在尝试使用 HttpClient 从此 URL 获取正确的 JSON 响应。当我在 Chrome 中查看 URL 时，数据是正确格式的 JSON。当我使用 HttpClient 时，我收到一堆看起来像字节或类似内容的垃圾数据。我不知道如何将其解码为字符串。请指教。

string url = "https://api.nasdaq.com/api/calendar/earnings?date=2010-07-30";

string calendar = await DownloadFile(new string[] { url });

private static readonly HttpClient httpClient = new HttpClient();

        public static async Task<string> DownloadFile(string[] args)
        {
            string url = args[0];

            httpClient.DefaultRequestHeaders.AcceptEncoding.ParseAdd("gzip, deflate, br");
            httpClient.DefaultRequestHeaders.Connection.ParseAdd("keep-alive");

            string text = await httpClient.GetStringAsync(url);
            
            return text;

        }

我有一个 Web Api，它向我发送使用 brotli 压缩的响应，并且我有一个控制台应用程序，它通过向我的 WebApi 请求数据来使用 HttpClient。我需要解压缩 WebApi 发送的数据。

对于.Net Core 2.2

启动.cs

//压缩\xc3\xb3n 服务端响应

services.Configure<BrotliCompressionProviderOptions>(opciones =>\n                opciones.Level = CompressionLevel.Optimal\n);\n\nservices.AddResponseCompression(opciones =>\n{\n    opciones.EnableForHttps = true;\n    opciones.Providers.Add<BrotliCompressionProvider>();\n});\n

控制台应用程序

using (var client = new HttpClient(handler)){\n    client.BaseAddress = new Uri(BASE_URL);\n    client.Timeout = new TimeSpan(0, 0, TIMEOUT_SECONDS);\n    HttpRequestHeaders headers = client.DefaultRequestHeaders;\n    headers.Add("X-User", Environment.UserName);\n    headers.Add("Accept-Encoding", "br"); //gzip\n    HttpResponseMessage response = null;\n\n    response = await client.GetAsync($"{requestUrl}");\n    if (response.IsSuccessStatusCode)\n    {\n        string strResult = await response.Content.ReadAsStringAsync();\n        return JsonConvert.DeserializeObject<T>(strResult);\n    }\n}\n

strResult 不是 …