HttpClient不張貼表單數據

Question

誰能告訴我爲什麼HttpClient的PostAsync不張貼表單數據？

我在客戶端發佈時沒有收到服務器端的數據。上次我檢查時，formFields包含鍵值對中的數據，但無法找到formContent中的數據。

using (var client = new HttpClient()) 
{ 
    var formFields = new List<KeyValuePair<string, string>>(); 

    formFields.Add(new KeyValuePair<string, string>("AccountId", _dealerAccountId)); 
    formFields.Add(new KeyValuePair<string, string>("Username", _dealerUsername)); 
    formFields.Add(new KeyValuePair<string, string>("Password", _dealerPassword)); 

    var formContent = new FormUrlEncodedContent(formFields); 
    var response = await client.PostAsync(httpPrefix + "://" + httpHost + "/WebApi/Token/GetToken_v1/1592673/", formContent); 
    if (!response.IsSuccessStatusCode) 
    { 
     return; 
    } 
    var responseContent = await response.Content.ReadAsStringAsync(); 

    token = JsonConvert.DeserializeObject<string>(responseContent); 
} 

Answer 1

我依稀記得有類似的問題。我們最終沒有使用「PostAsync」方法，但使用了以下內容。這是我們用來測試我們的WebAPI的輔助方法。希望這可以幫助。

public async Task<TestHttpResponseMessage> Post(string url, string jsonPayload = "", Dictionary<string, string> headers = null, IFilter filter = null, HttpContent content = null) 
{ 
    using (var server = CreateTestserver(filter)) 
    { 
     if (!url.StartsWith("http")) 
      url = "http://localhost/" + url; 

     var request = new HttpRequestMessage 
     { 
      RequestUri = new Uri(url), 
      Method = HttpMethod.Post, 
      Content = content ?? new StringContent(jsonPayload, Encoding.UTF8, "application/json") 
     }; 

     request.Headers.Add("usertoken", OpenApiApplication.TestApiKey.ToString()); 

     if (headers == null) 
      headers = new Dictionary<string, string>(); 

     foreach (var header in headers) 
      request.Content.Headers.Add(header.Key, header.Value); 

     var httpResponseMessage = await server.HttpClient.SendAsync(request); 

     var stringResult = await httpResponseMessage.Content.ReadAsStringAsync(); 

     return new TestHttpResponseMessage { JsonObject = Json.Decode(stringResult), HttpResponseMessage = httpResponseMessage }; 
    } 
}