为什么反序列化是JSON.NET工作不继承 [英] Why is JSON.NET is not working with inheritance while deserializing

问题描述

我反序列化的JSON字符串通过使用正常工作下面的类来根对象。

  [Serializable接口]
    公共类MoviesListRootObject
    {
        公众诠释计数{获得;组; }
        公共分页分页{获得;组; }
        公开名单＆LT;响应＆GT;响应{获得;组; }
    }
 

.............

  VAR JSON = wc.DownloadString（jsonRequestURL）;
VAR rootObj = JsonConvert.DeserializeObject＆LT; MoviesListRootObject＆GT;（JSON）;
 

但是，如果我generalizng根对象BT建立的父类，然后从它继承，然后我得到反序列化后空！！！！

  [Serializable接口]
    公共类RootObject
    {
        公众诠释计数{获得;组; }
        公共分页分页{获得;组; }
    }

[可序列化]
    公共类MoviesListRootObject：RootObject
    {
        公开名单＆LT; MovieResponse＆GT; movieResponse {获得;组; }

    }
 

..............................................

  VAR JSON = wc.DownloadString（jsonRequestURL）;
 VAR rootObj = JsonConvert.DeserializeObject＆LT; MoviesListRootObject＆GT;（JSON）;
 

解决方案

这是很简单，由json.net提供的内置支持，你只需要使用下面的JsonSettings同时序列化和反序列化：

  JsonConvert.SerializeObject（图，Formatting.None，新JsonSerializerSettings（）
                                                                                               {
                                                                                                 TypeNameHandling = TypeNameHandling.All，
                                                                                               TypeNameAssemblyFormat = System.Runtime.Serialization.Formatters.FormatterAssemblyStyle.Simple
                                                                                           }）;
 

和Deserialzing使用低于code：

  JsonConvert.DeserializeObject（Encoding.UTF8.GetString（BDATA），类型，
                                                       新JsonSerializerSettings（）
                                                           {TypeNameHandling = TypeNameHandling.All}）;
 

就拿记下JsonSerializerSettings的对象初始化，这是对你很重要。

I am deserializing the JSON string to root object by using the following class which works fine .

[Serializable]
    public class MoviesListRootObject
    {
        public int count { get; set; }
        public Pagination pagination { get; set; }
        public List<Response> response { get; set; }
    }

...................................

var json = wc.DownloadString(jsonRequestURL);
var rootObj = JsonConvert.DeserializeObject<MoviesListRootObject>(json);

But if I am generalizng the root object bt creating parent class and then inheriting from it , then I get null after deserialization!!!!

[Serializable]
    public class RootObject
    {
        public int count { get; set; }
        public Pagination pagination { get; set; }
    }

[Serializable]
    public class MoviesListRootObject:RootObject
    {
        public List<MovieResponse> movieResponse { get; set; }

    }

..............................................

 var json = wc.DownloadString(jsonRequestURL);
 var rootObj = JsonConvert.DeserializeObject<MoviesListRootObject>(json);

解决方案

It is quite simple and out of the box support provided by json.net, you just have to use the following JsonSettings while serializing and Deserializing:

JsonConvert.SerializeObject(graph,Formatting.None, new JsonSerializerSettings()
                                                                                               {
                                                                                                 TypeNameHandling = TypeNameHandling.All,
                                                                                               TypeNameAssemblyFormat = System.Runtime.Serialization.Formatters.FormatterAssemblyStyle.Simple
                                                                                           });

and for Deserialzing use the below code:

JsonConvert.DeserializeObject(Encoding.UTF8.GetString(bData),type,
                                                       new JsonSerializerSettings()
                                                           {TypeNameHandling = TypeNameHandling.All});

Just take a note of the JsonSerializerSettings object initializer, that is important for you.

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