反序列化json响应

Question

我正在使用的API除其他外具有以下两个响应：

{
    "enrollDeviceErrorResponse": {
        "errorCode": "GRX-1056",
        "errorMessage": "DEP Reseller ID missing. 
        Enter a valid DEP Reseller ID and resubmit your request."
    }
}

要么

{
    "enrollDeviceErrorResponse": [
      {
            "errorCode": "GRX-1056",
            "errorMessage": "DEP Reseller ID missing. 
            Enter a valid DEP Reseller ID and resubmit your request."
        },
        {
            "errorCode": "DEP-ERR-3003",
            "errorMessage": "Order information missing. T
            he transaction needs to have one or more valid orders. 
             Enter valid orders and resubmit your request."
        },
        {
            "errorCode": "DEP-ERR-3001",
            "errorMessage": "Transaction ID missing. 
            Enter a valid transaction ID and resubmit your request."
        }
    ]
}

我创建了一些可以反序列化为以下响应的类：

public class EnrollDeviceErrorRoot
{
    public EnrollDeviceErrorRoot()
    {
        this.EnrollDeviceErrorResponse = new EnrollDeviceErrorResponse();
    }

    public EnrollDeviceErrorResponse EnrollDeviceErrorResponse { get; set; }
}

public class EnrollDeviceErrorRoot
{
    public EnrollDeviceErrorRoot()
    {
        this.EnrollDeviceErrorResponse = new EnrollDeviceErrorResponse();
    }

    public EnrollDeviceErrorResponse EnrollDeviceErrorResponse { get; set; }
}

public class EnrollDeviceErrorResponse
{
    public string ErrorCode { get; set; }

    public string ErrorMessage { get; set; }
}

我很难找到一种很好的方法来确定我应该根据响应使用哪个班级。 我目前有这个失败的代码：

var multipleErrors = JsonConvert.DeserializeObject<EnrollDeviceErrorsRoot>(response);

if (multipleErrors.EnrollDeviceErrorResponse != null && multipleErrors.EnrollDeviceErrorResponse.Any())
{
    this.StatusCode = multipleErrors.EnrollDeviceErrorResponse.Select(x => x.ErrorCode).Aggregate((a, b) => a + ", " + b);
    this.StatusMessage = multipleErrors.EnrollDeviceErrorResponse.Select(x => x.ErrorMessage).Aggregate((a, b) => a + Environment.NewLine + b);
    this.HasErrors = true;

    return;
}

var singleError = JsonConvert.DeserializeObject<EnrollDeviceErrorRoot>(response);

if (!string.IsNullOrEmpty(singleError.EnrollDeviceErrorResponse.ErrorCode))
{
    this.StatusCode = singleError.EnrollDeviceErrorResponse.ErrorCode;
    this.StatusMessage = singleError.EnrollDeviceErrorResponse.ErrorMessage;
    this.HasErrors = true;

    return;
}

上面的代码有误：

Newtonsoft.Json.JsonSerializationException : Cannot deserialize the current JSON object (e.g. {"name":"value"}) into type 'System.Collections.Generic.List`1[Atea.Dep.Core.Service.Models.EnrollDeviceErrorResponse]' 
because the type requires a JSON array (e.g. [1,2,3]) to deserialize correctly.

To fix this error either change the JSON to a JSON array (e.g. [1,2,3]) or change the deserialized type so that it is a normal .NET type (e.g. not a primitive type like integer, 
not a collection type like an array or List<T>) that can be deserialized from a JSON object. 
JsonObjectAttribute can also be added to the type to force it to deserialize from a JSON object.

当其他人不知道自己从服务器那里得到什么时，他们如何从响应中处理这种反序列化？ 我当然可以只看原始响应并确定这种方式，但是还有其他更清洁的方式可以做到这一点吗？ 我无法更改API，我不知道为什么只有一个包含一个或多个错误的列表才能返回一个响应。

Answer 1

您可以使用

JObject.Parse(response)["enrollDeviceErrorResponse"].Type

确定响应的类型。 在第一种情况下，它将在第二种情况下受阻。 然后，很容易继续进行适当的反序列化。

Answer 2

您可以使用如下形式：

var output;
dynamic jObject = JsonConvert.DeserializeObject (outputAPI);
bool isArray = jObj.enrollDeviceErrorResponse.Type == JTokenType.Array;
bool isObject = jObj.enrollDeviceErrorResponse.Type == JTokenType.Object;
if(isObject)
   output = JsonConvert.DeserializeObject<EnrollDeviceErrorResponse>(outputAPI);
//else you will use the other class to deserialize the object