Xamarin__HttpClient__HttpResponseMessage-Content ---獲取HTML而不是JSON

Question

HttpClient myClient = new HttpClient(); 
myClient.BaseAddress = new Uri(URL); 

基地址已經在客戶端指定了它的URL。

var encodedObject = JsonConvert.SerializeObject(Obj); 
myClient.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json")); 
HttpResponseMessage response = await myClient.PostAsync("test.php/yourAPI",new StringContent(encodedObject, System.Text.Encoding.UTF8, "application/json")); 
if (response.IsSuccessStatusCode) 
{ 
    var responseContent = response.ToString(); 
    var responsebody = response.Content.ToString(); 
    Stream receiveStream = response.GetResponseStream(); 
    string responseBodyAsText = response.Content.ReadAsStringAsync().Result; 
} 

Answer 1

方法PostAsync具有作爲第一個參數的API的完整URI。因此，它應該如下所示：

HttpResponseMessage response = await myClient.PostAsync("http://bla-bla-bla/test.php/test",new StringContent(encodedObject, System.Text.Encoding.UTF8, "application/json")); 

而且沒有必要定義BaseAddress。

Answer 2

可能是內容協商問題。嘗試添加JSON媒體類型

myClient.DefaultRequestHeaders.Accept.Clear(); 
myClient.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json")); 
//...other code removed for brevity. 

這個代碼將接受頭爲「application/JSON」，它告訴服務器以JSON格式發送數據之前清除Accept頭。

參考源：Calling a Web API From a .NET Client in ASP.NET Web API 2