获取(415)不支持的媒体类型错误



我要做的是我必须在给定的URL中发布JSON数据我的JSON看起来像

{
    "trip_title":"My Hotel Booking",
    "traveler_info":{
        "first_name":"Edward",
        "middle_name":"",
        "last_name":"Cullen",
        "phone":{
            "country_code":"1",
            "area_code":"425",
            "number":"6795089"
        },
        "email":"asdv@gmail.com"
    },
    "billing_info":{
        "credit_card":{
            "card_number":"47135821",
            "card_type":"Visa",
            "card_security_code":"123",
            "expiration_month":"09",
            "expiration_year":"2017"
        },
        "first_name":"Edward",
        "last_name":"Cullen",
        "billing_address":{
            "street1":"Expedia Inc",
            "street2":"108th Ave NE",
            "suite":"333",
            "city":"Bellevue",
            "state":"WA",
            "country":"USA",
            "zipcode":"98004"
        },
        "phone":{
            "country_code":"1",
            "area_code":"425",
            "number":"782"
        }
    },
    "marketing_code":""
}

和我的功能

string message = "URL";
_body="JSON DATA";
HttpWebRequest request = HttpWebRequest.Create(message) as HttpWebRequest;
if (!string.IsNullOrEmpty(_body))
{
    request.ContentType =  "text/json";
    request.Method =  "POST";
    using (var streamWriter = new StreamWriter(request.GetRequestStream()))
    {
        streamWriter.Write(_body);
        streamWriter.Flush();
        streamWriter.Close();
    }
}
using (HttpWebResponse webresponse = request.GetResponse() as HttpWebResponse)
{
    using (StreamReader reader = new StreamReader(webresponse.GetResponseStream()))
    {
        string response = reader.ReadToEnd();
    }
}

当我发布它时;我有一个错误

"远程服务器返回了一个错误:(415)不支持的媒体类型。"

任何人都对此有所了解;我在哪里误会?

尝试以下:

request.ContentType =  "application/json"

对于WebApi >>如果您是calling this POST method from fiddler,只需在标题中添加以下行。

Content-Type: application/json

正如他人回答的那样,问题类型的问题。应该是"应用/json"。

这是一个带有旧WebRequest的示例

var parameters = Newtonsoft.Json.JsonConvert.SerializeObject(obj);
var req = WebRequest.Create(uri);
req.Method = "POST";
req.ContentType = "application/json";
byte[] bytes = Encoding.ASCII.GetBytes(parameters);
req.ContentLength = bytes.Length;
using (var os = req.GetRequestStream())
{
    os.Write(bytes, 0, bytes.Length);
    os.Close();
}
var stream = req.GetResponse().GetResponseStream();
if (stream != null)
    using (stream)
    using (var sr = new StreamReader(stream))
    {
        return sr.ReadToEnd().Trim();
    }
return "Response was null";

我重命名了我的项目,并更新了所有名称空间以关联此之后,我得到了完全相同的消息。我意识到我没有更新Web.config(名称和合同)中的名称空间:

<system.serviceModel>
  <services>
    <service name="X.Y.Z.Authentication" behaviorConfiguration="ServiceBehaviour">
      <endpoint address="" binding="webHttpBinding" contract="X.Y.Z.IAuthentication" behaviorConfiguration="web" bindingConfiguration="defaultRestJsonp"></endpoint>
    </service>
  </...>
</..>

希望这有助于任何人阅读本文。

我不是100%确定,但我想您必须将文本发送为bytearray,请尝试以下操作:

req = (HttpWebRequest)HttpWebRequest.Create(uri);
        req.CookieContainer = cookieContainer;
        req.Method = "POST";
        req.ContentType = "text/json";
        byte[] byteArray2 = Encoding.ASCII.GetBytes(body);
        req.ContentLength = byteArray2.Length;
        Stream newStream = req.GetRequestStream();
        newStream.Write(byteArray2, 0, byteArray2.Length);
        newStream.Close();

这是我为Web API函数创建的代码的示例,该函数接受JSON DATA

string Serialized = JsonConvert.SerializeObject(jsonData);
using (var client = new HttpClient())
{
    client.DefaultRequestHeaders.Accept.Clear();
    client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
    HttpContent content = new StringContent(Serialized, Encoding.Unicode, "application/json"); 
    var response = await client.PostAsync("http://localhost:1234", content);   
}

序列化要传递并编码的数据。另外,请提及req.contenttype =" application/json";

"马丁"代码有效。

LoginInfo obj = new LoginInfo();
obj.username = uname;
obj.password = pwd;
var parameters = Newtonsoft.Json.JsonConvert.SerializeObject(obj);
var req = WebRequest.Create(uri);
req.Method = "POST";
req.ContentType = "application/json";
byte[] bytes = Encoding.ASCII.GetBytes(parameters);
req.ContentLength = bytes.Length;
using (var os = req.GetRequestStream())
{
    os.Write(bytes, 0, bytes.Length);
    os.Close();
}
var stream = req.GetResponse().GetResponseStream();
if (stream != null)
    using (stream)
    using (var sr = new StreamReader(stream))
    {
        return sr.ReadToEnd().Trim();
    }

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