自定义HttpClient请求头

如何向HttpClient请求添加自定义报头?我使用PostAsJsonAsync方法来发布JSON。我需要添加的自定义标头是

"X-Version: 1"

这是我目前所做的:

using (var client = new HttpClient()) {
    client.BaseAddress = new Uri("https://api.clickatell.com/");
    client.DefaultRequestHeaders.Accept.Clear();
    client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", "xxxxxxxxxxxxxxxxxxxx");
    client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
    var response = client.PostAsJsonAsync("rest/message", svm).Result;
}

当前回答

我在HttpClient头文件中添加了x-api-version，如下所示:

var client = new HttpClient(httpClientHandler)
{
    BaseAddress = new Uri(callingUrl)
};
client.DefaultRequestHeaders.Accept.Clear();
client.DefaultRequestHeaders.Accept.Add(new System.Net.Http.Headers.MediaTypeWithQualityHeaderValue("application/json"));
client.DefaultRequestHeaders.Add("x-api-version", v2);

2021-12-30 09:52:00

其他回答

我已经找到了问题的答案。

client.DefaultRequestHeaders.Add("X-Version","1");

这将为您的请求添加一个自定义标头

2016-03-10 07:19:20

我在HttpClient头文件中添加了x-api-version，如下所示:

var client = new HttpClient(httpClientHandler)
{
    BaseAddress = new Uri(callingUrl)
};
client.DefaultRequestHeaders.Accept.Clear();
client.DefaultRequestHeaders.Accept.Add(new System.Net.Http.Headers.MediaTypeWithQualityHeaderValue("application/json"));
client.DefaultRequestHeaders.Add("x-api-version", v2);

2021-12-30 09:52:00

你也可以使用HttpClient。PostAsync方法:

using (HttpClient http_client = new HttpClient())
{
   StringContent string_content = new StringContent(JsonSerializer.Serialize("{\"field\":\"field_value\"}"));
   string_content.Headers.Add("X-Version","1");
   using (HttpResponseMessage response = await http_client.PostAsync("http://127.0.0.1/apiMethodName", string_content))
   {
      if (response.IsSuccessStatusCode)
      {
         Console.WriteLine($"Response status code: {response.StatusCode}");
      }
      else
      {
         Console.WriteLine($"Error status code: {response.StatusCode}");
      }
   }
}

2022-08-26 07:56:37

如果有人想知道如何调用httpClient.GetStreamAsync()，它没有重载，需要HttpRequestMessage来提供自定义头，您可以使用@Anubis给出的上述代码并调用

等待response.Content.ReadAsStreamAsync ()

特别有用，如果你返回一个blob url范围头作为一个FileStreamResult

2022-01-12 15:14:40

var request = new HttpRequestMessage {
    RequestUri = new Uri("[your request url string]"),
    Method = HttpMethod.Post,
    Headers = {
        { "X-Version", "1" } // HERE IS HOW TO ADD HEADERS,
        { HttpRequestHeader.Authorization.ToString(), "[your authorization token]" },
        { HttpRequestHeader.ContentType.ToString(), "multipart/mixed" },//use this content type if you want to send more than one content type
    },
    Content = new MultipartContent { // Just example of request sending multipart request
        new ObjectContent<[YOUR JSON OBJECT TYPE]>(
            new [YOUR JSON OBJECT TYPE INSTANCE](...){...}, 
            new JsonMediaTypeFormatter(), 
            "application/json"), // this will add 'Content-Type' header for the first part of request
        new ByteArrayContent([BINARY DATA]) {
            Headers = { // this will add headers for the second part of request
                { "Content-Type", "application/Executable" },
                { "Content-Disposition", "form-data; filename=\"test.pdf\"" },
            },
        },
    },
};

2017-05-04 10:37:11

自定义HttpClient请求头

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