无法反序列化 wcf 服务中的 Web Api 核心响应

Question

'WcfEntAdmin' 是 WcfService，它在内部调用 WebApi 核心服务来获取一些数据。我使用 HttpClient 来调用 WebApi Core 服务。调用成功返回 200 状态码，但是当我尝试反序列化响应时，应用程序进入中断状态。我不确定可能出了什么问题。

public class ApiHelper
{
private readonly JWTHandler _jwtHandler;
private readonly HttpClient _httpClient;
private readonly HttpClient _secureHttpClient;

public ApiHelper()
{
_httpClient = new HttpClient(ConfigureHandler());
_jwtHandler = new JWTHandler("myusername", "test", memoryCache, new AuthorizationClient(_configuration, _httpClient));
_jwtHandler.InnerHandler = ConfigureHandler();
_secureHttpClient = new HttpClient(_jwtHandler);
}

public bool IsAutoPolicy()
{
// the code here makes a call to the Web Api Core using the _securityHttpClient and determines if it's a Auto Policy or not 
}

public async Task<ApiVehiclesInfo> GetVehicleList(string policyNumber, DateTime effectiveDate)
{
    ApiVehiclesInfo vehiclesInfo = new ApiVehiclesInfo();
    if (IsPATEnabled())
    {
      var secureApiClient = new BaseApiClient(_configuration, _secureHttpClient);
      var response = await secureApiClient.GetAsync("PolicyApi",$"legacy_adapter/vehicles/{policyNumber}/{effectiveDate.ToString("yyyy-MMM-dd")}");
      if (response.IsSuccessStatusCode)
      {
          try
          {
            vehiclesInfo = await response.Deserialize<ApiVehiclesInfo>();
          }
          catch (Exception e)
          {
            Debug.WriteLine(e);
            throw;
          }
     }
  }
return vehiclesInfo;
}

调用代码首先调用IsAutoPolicy()，然后调用GetVehiclesList("1234567",DateTime.Now)。

编辑：我将反序列化作为 HttpResponseMessage 的扩展方法

public static async Task<TResult> Deserialize<TResult>(this HttpResponseMessage response)
{
    try
    {
       using (Stream stream = await response.Content.ReadAsStreamAsync())
       using (StreamReader streamReader = new StreamReader(stream))
       using (JsonReader textReader = new JsonTextReader(streamReader))
       {
           JsonSerializer serializer = new JsonSerializer
           {
               NullValueHandling = NullValueHandling.Ignore,
               MissingMemberHandling = MissingMemberHandling.Ignore,
           };
        return serializer.Deserialize<TResult>(textReader);
        }
   }
    catch (Exception ex)
    {
        ex.Data.Add("StatusCode", response.StatusCode);
        ex.Data.Add("ReasonPhrase", response.ReasonPhrase);
        throw new SerializationException("Failed to deserialize", ex);
    }
}

Answer 1

当你从 api 返回响应时，你不能直接 反序列化响应。

需要通过如下代码获取返回的json，然后反序列化：

 string responseString = await response.Content.ReadAsStringAsync();
 vehiclesInfo = Newtonsoft.Json.JsonConvert.DeserializeObject<ApiVehiclesInfo>(responseString);