Json.net反序列化返回一个空对象

问题描述：

我正在使用下面的代码进行序列化.

I'm using the code below for serialization.

var json = JsonConvert.SerializeObject(new { summary = summary });

summary是类型为SplunkDataModel的自定义对象:

summary is a custom object of type SplunkDataModel:

public class SplunkDataModel
{
    public SplunkDataModel() {}

    public string Category { get; set; }
    public int FailureCount { get; set; }
    public Dictionary<string, SplunkError> FailureEntity { get; set; }
    public Dictionary<string, string> JobInfo { get; set; }
    public string JobStatus { get; set; }
    public int SuccessCount { get; set; }
    public List<string> SuccessEntity { get; set; }
    public int TotalCount { get; set; }
}

序列化将导致以下JSON:

Serialization results in the JSON below:

{
  "summary": {
    "Category": "category",
    "JobStatus": "Failure",
    "JobInfo": {
      "Course processing failed": "" 
    },
    "TotalCount": 0,
    "SuccessCount": 0,
    "FailureCount": 0,
    "FailureEntity": {},
    "SuccessEntity": []
  }
}

现在，出于单元测试的目的，我需要对其进行反序列化，但是下面的代码将返回一个空值的对象.我要去哪里错了?

Now, for unit testing purposes, I need to deserialize it, but the code below is returning an object with empty values. Where am I going wrong?

var deserialized = JsonConvert.DeserializeObject<SplunkDataModel>(contents);

答

将SplunkDataModel序列化为JSON时，将其包装在具有summary属性的对象中.因此，当将JSON反序列化回对象时，需要使用相同的结构.有几种方法可以解决此问题.他们都达到了相同的结果.

When you serialized your SplunkDataModel to JSON, you wrapped it in an object with a summary property. Hence, when you deserialize the JSON back to objects, you need to use the same structure. There are several ways to go about it; they all achieve the same result.

声明一个类以表示JSON的根级别并反序列化为该类:

Declare a class to represent the root level of the JSON and deserialize into that:

public class RootObject
{
    public SplunkDataModel Summary { get; set; }
}

然后:

var deserialized = JsonConvert.DeserializeObject<RootObject>(contents).Summary;

或者，通过示例反序列化为匿名类型的实例，然后从结果中检索对象:

Or, deserialize by example to an instance of an anonymous type, then retrieve your object from the result:

var anonExample = new { summary = new SplunkDataModel() };
var deserialized = JsonConvert.DeserializeAnonymousType(contents, anonExample).summary;

或者，反序列化为JObject，然后从中实现您的对象:

Or, deserialize to a JObject, then materialize your object from that:

JObject obj = JObject.Parse(contents);
var deserialized = obj["summary"].ToObject<SplunkDataModel>();

Json.net反序列化返回一个空对象

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