如何用.NET Core中的HTTPCLIENT读取标题值

发布于 2025-02-10 09:21:24 字数 906 浏览 1 评论 0原文

这是我在这里使用的代码

using (var client = new HttpClient())
{
  client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("bearer", HttpContext.Session.GetString("JwtToken"));            

  var url = $"...some url";            

  var requestUri = new Uri(url);

  var responseTask = client.GetAsync(requestUri);
  responseTask.Wait();
           

  var result = responseTask.Result;
  if (result.IsSuccessStatusCode)
  {
    var reportResults = Task.Run(async() => await result.Content.ReadAsAsync<JArray>()).Result;
    return reportResults;
  }
}

，如果我尝试访问这样的标题，

string error = responseTask.Headers.TryGetValue("X-TotalResults").FirstOrDefault();

我会遇到错误

Task<HttpResponseMessage> does not contain a 
definition for Headers and no accessible extension method Headers

，所以我如何阅读标题。

原文

This is the code i'm using

using (var client = new HttpClient())
{
  client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("bearer", HttpContext.Session.GetString("JwtToken"));            

  var url = quot;...some url";            

  var requestUri = new Uri(url);

  var responseTask = client.GetAsync(requestUri);
  responseTask.Wait();
           

  var result = responseTask.Result;
  if (result.IsSuccessStatusCode)
  {
    var reportResults = Task.Run(async() => await result.Content.ReadAsAsync<JArray>()).Result;
    return reportResults;
  }
}

Here if i try to access header like this

string error = responseTask.Headers.TryGetValue("X-TotalResults").FirstOrDefault();

I'm getting error

Task<HttpResponseMessage> does not contain a 
definition for Headers and no accessible extension method Headers

So How i can read the header .. thanks in advance

分享到QQ

分享到微博

如果你对这篇内容有疑问，欢迎到本站社区发帖提问参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。

发布评论

需要登录才能够评论，你可以免费注册一个本站的账号。

简单爱 2025-02-17 09:21:24

您有一个任务＆lt; httpresponsemessage＆gt;，而不是httpresponsemessage。

而不是使用.result，它出于许多原因是危险的，而是正确使用async。

static HttpClient client = new HttpClient();

private async JArray GetReportResults()
{
    client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("bearer", HttpContext.Session.GetString("JwtToken"));            

    var url = $"...some url";            

    using (var response = await client.GetAsync(url))
    {           
        result.EnsureSuccessStatusCode()
        var reportResults = await result.Content.ReadAsAsync<JArray>();
        return reportResults;
    }
}

You have a Task<HttpResponseMessage> rather than a HttpResponseMessage.

Instead of using .Result, which is dangerous for many reasons, convert your code to use async properly.

static HttpClient client = new HttpClient();

private async JArray GetReportResults()
{
    client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("bearer", HttpContext.Session.GetString("JwtToken"));            

    var url = quot;...some url";            

    using (var response = await client.GetAsync(url))
    {           
        result.EnsureSuccessStatusCode()
        var reportResults = await result.Content.ReadAsAsync<JArray>();
        return reportResults;
    }
}

回复收藏 0 原文

~没有更多了~