创建一个从控制台的WebAPI的帖子，包括在JSON数据$类型 [英] Create WebAPI post from Console to include $type in json data

问题描述

我创建对象，并张贴到一个的WebAPI。基本上，我只是不能织补事情序列化，以便包括在JSON的$​​类型信息。以下是code我试图写。后来是我所期望的JSON。

  VAR CDS =新的List＆LT; CreditDefaultSwaps＆GT;（）
        {
            新CreditDefaultSwaps（）{ModelNumber =SP8A1ETA，经纪人$ P $垫= 0}，
            新CreditDefaultSwaps（）{ModelNumber =SP3A0TU1，经纪人$ P $垫= 0}，
            新CreditDefaultSwaps（）{ModelNumber =SP4A102V，经纪人$ P $垫= 0}
        };        VAR的客户=新的HttpClient {BaseAddress =新的URI（HTTP：//本地主机/ BloombergWebAPI / API /）};        client.DefaultRequestHeaders.Accept.Clear（）;
        client.DefaultRequestHeaders.Accept.Add（新MediaTypeWithQualityHeaderValue（应用/ JSON））;        //设置请求对象
        VAR oContract =新WebApiDataServiceRequest
        {
            请求类型= ReferenceDataRequestServiceTypes.ReferenceDataRequest，
            SwapType = BloombergWebAPIMarshal.SwapType.CDS，
            SecurityList = CDS
        };        尝试过这样的事情和VAR含量格式化为我期望
        然而，我无法发布使用postasjs​​onasync数据        // VAR内容= JsonConvert.SerializeObject（oContract，Formatting.Indented，
        //新JsonSerializerSettings {TypeNameHandling = TypeNameHandling.Objects}）;           到Console.ReadLine（）;        VAR响应= client.PostAsJsonAsync（bloombergapi / processbloombergrequest，oContract）。结果;
 

下面是我想张贴JSON。那我在上面code缺失，我敢肯定它的一些愚蠢的。

  {
      $类型：BloombergWebAPIMarshal.WebApiDataServiceRequest，BloombergWebAPIMarshal
      的RequestType：3，
      SwapType：1，
      SecurityList：[
        {
          $类型：BloombergWebAPIMarshal.CreditDefaultSwaps，BloombergWebAPIMarshal
          ModelNumber：SP8A1ETA，
          经纪人$ P $垫：0
        }，
        {
          $类型：BloombergWebAPIMarshal.CreditDefaultSwaps，BloombergWebAPIMarshal
          ModelNumber：SP3A0TU1，
          经纪人$ P $垫：0
        }，
        {
          $类型：BloombergWebAPIMarshal.CreditDefaultSwaps，BloombergWebAPIMarshal
          ModelNumber：SP4A102V，
          经纪人$ P $垫：0
        }
      ]
    }
 

解决方案

创建用于该调用来产生适当的请求，另一个重载：

  VAR响应= client.PostAsJsonAsync（processbloombergrequest，oContract，TypeNameHandling.Objects）。结果
 

这是新的过载

 公共静态任务＆LT; Htt的presponseMessage＆GT; PostAsJsonAsync＆LT; T＆GT;（这HttpClient的客户端，串requestUri，T值，TypeNameHandling typeNameHandling）
{    返回client.PostAsJsonAsync＆LT; T＆GT;（requestUri，价值，CancellationToken.None，typeNameHandling）;
}公共静态任务＆LT; Htt的presponseMessage＆GT; PostAsJsonAsync＆LT; T＆GT;（这HttpClient的客户端，串requestUri，T值，的CancellationToken的CancellationToken，TypeNameHandling typeNameHandling）
{
    VAR格式=新JsonMediaTypeFormatter
    {
        SerializerSettings =新JsonSerializerSettings（）
        {
            TypeNameHandling = typeNameHandling
        }
    };    返回client.PostAsync＆LT; T＆GT;（requestUri，价值，格式，的CancellationToken）;
}
 

I'm creating objects and posting them to a webapi. Basically I just can't get the darn things to serialize so as to include the $type info in the json. The following is the code I'm attempting to write. Afterwards is the json I would expect.

       var cds = new List<CreditDefaultSwaps>()
        {
            new CreditDefaultSwaps() { ModelNumber = "SP8A1ETA", BrokerSpread = 0},
            new CreditDefaultSwaps() { ModelNumber = "SP3A0TU1", BrokerSpread = 0},
            new CreditDefaultSwaps() { ModelNumber = "SP4A102V", BrokerSpread = 0}
        };

        var client = new HttpClient {BaseAddress = new Uri("http://localhost/BloombergWebAPI/api/")};

        client.DefaultRequestHeaders.Accept.Clear();
        client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));

        // set up request object
        var oContract = new WebApiDataServiceRequest
        {
            RequestType = ReferenceDataRequestServiceTypes.ReferenceDataRequest,
            SwapType = BloombergWebAPIMarshal.SwapType.CDS,
            SecurityList = cds
        };

        Tried something like this and the var content was formatted as I would expect
        however I couldn't post the data using postasjsonasync

        //var content = JsonConvert.SerializeObject(oContract, Formatting.Indented,
        //    new JsonSerializerSettings { TypeNameHandling = TypeNameHandling.Objects });

           Console.ReadLine();

        var response = client.PostAsJsonAsync("bloombergapi/processbloombergrequest", oContract).Result;

The following is the json I'm trying to post. What am I missing in the above code, I'm sure it's something silly.

   {
      "$type": "BloombergWebAPIMarshal.WebApiDataServiceRequest, BloombergWebAPIMarshal",
      "RequestType": 3,
      "SwapType": 1,
      "SecurityList": [
        {
          "$type": "BloombergWebAPIMarshal.CreditDefaultSwaps, BloombergWebAPIMarshal",
          "ModelNumber": "SP8A1ETA",
          "BrokerSpread": 0
        },
        {
          "$type": "BloombergWebAPIMarshal.CreditDefaultSwaps, BloombergWebAPIMarshal",
          "ModelNumber": "SP3A0TU1",
          "BrokerSpread": 0
        },
        {
          "$type": "BloombergWebAPIMarshal.CreditDefaultSwaps, BloombergWebAPIMarshal",
          "ModelNumber": "SP4A102V",
          "BrokerSpread": 0
        }
      ]
    }

解决方案

Created another overload Used this call to produce proper request:

var response = client.PostAsJsonAsync("processbloombergrequest", oContract, TypeNameHandling.Objects).Result

This is the new overload

public static Task<HttpResponseMessage> PostAsJsonAsync<T>(this HttpClient client, string requestUri, T value, TypeNameHandling typeNameHandling)
{

    return client.PostAsJsonAsync<T>(requestUri, value, CancellationToken.None, typeNameHandling);
}

public static Task<HttpResponseMessage> PostAsJsonAsync<T>(this HttpClient client, string requestUri, T value, CancellationToken cancellationToken, TypeNameHandling typeNameHandling)
{
    var formatter = new JsonMediaTypeFormatter
    {
        SerializerSettings = new JsonSerializerSettings()
        {
            TypeNameHandling = typeNameHandling
        }
    };

    return client.PostAsync<T>(requestUri, value, formatter, cancellationToken);
}

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