使用JSON.net将JSON反序列化为.net基类

问题描述

我正在尝试使用 GeoJSON .codeplex.com/"rel =" nofollow> JSON.net 库.根据类型"(type)属性值，每个要素的几何组成可以是许多不同的类型.

I am trying to deserialize GeoJSON using the JSON.net library. The geometry component of each feature can be of many different types based on the "type" attribute value.

我需要将此GeoJSON的几何组件反序列化为几何对象模型，如下所示:

I need to deserialize the geometry component of this GeoJSON into a geometry object model like so:

public abstract class Geometry { ... }

public class Point : Geometry { ... }

public class LineString : Geometry { ... }

public class Polygon : Geometry { ... }

因此，基于"type"属性的值，它将反序列化为相应的.net具体类型，但可以通过其基本Geometry类进行访问.

So based on the value of the "type" attribute, it will deserialize into the corresponding .net concrete type, but accessed via its base Geometry class.

JSON.net库是否提供与 KnownTypeAttribute 或 XmlElementAttribute 在XML序列化中，可以让我将JSON反序列化为具有一组已知派生类的基类吗?

Does the JSON.net library offer anything similar to the KnownTypeAttribute in WCF or XmlElementAttribute in XML Serialization that allows me to deserialize JSON to a base class with a set of known derived classes?

推荐答案

文档此处显示了此示例:

    [JsonObject(MemberSerialization.OptIn)]
    public class Person
    {
      // "John Smith"
      [JsonProperty]
      public string Name { get; set; }

      // "2000-12-15T22:11:03"
      [JsonProperty]
      [JsonConverter(typeof(IsoDateTimeConverter))]
      public DateTime BirthDate { get; set; }

      // new Date(976918263055)
      [JsonProperty]
      [JsonConverter(typeof(JavaScriptDateTimeConverter))]
      public DateTime LastModified { get; set; }

      // not serialized
      public string Department { get; set; }
    }

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