Json反序列化问题c#

我想尝试反序列化以下Facebook帖子回复：

"data": [
    {
      "id": "...", 
      "from": {
        "category": "Local business", 
        "name": "...", 
        "id": "..."
      }, 
      "message": "...", 
      "picture": "...", 
      "likes": {
        "data": [
          {
            "id": "...", 
            "name": "..."
          }, 
          {
            "id": "...", 
            "name": "..."
        ]
      }
    }
]

后模型类为：

public class Post
{
  public string Id { get; set; }
  public From From { get; set; }
  public string Message { get; set; }
  public string Picture { get; set; }

  [JsonProperty("likes.data")]      <===== why this is not working??
  public List<Like> Likes { get; set; }
} 

在反序列化json时，我想将likes.data条目映射到likes列表。我如何做到这一点？？？

您可以使用它来反序列化json

Newtonsoft.Json.JsonConvert.DeserializeObject("{\"data\": [...]")

---

您可以使用

DataContractJsonSerializer

（System.Runtime.Serialization）来反序列化：

使用以下命令反序列化：

using System.Runtime.Serialization;
using System.Runtime.Serialization.Json;

var jsonString = "{\"data\":[{\"id\":\"...\",\"from\":{\"category\":\"Local business\",\"name\":\"...\",\"id\":\"...\"},\"message\":\"...\",\"picture\":\"...\",\"likes\":{\"data\":[{\"id\":\"...\",\"name\":\"...\"},{\"id\":\"...\",\"name\":\"...\"}]}}]}";
var jsonSerializer = new DataContractJsonSerializer(typeof(JsonRoot));
JsonRoot json = null;
using(var stream = new MemoryStream(Encoding.UTF8.GetBytes(jsonString)))
{
    stream.Position = 0;
    json = (JsonRoot)jsonSerializer.ReadObject(stream);
}

使用如下类型：

[DataContract]
public class JsonRoot
{
    [DataMember(Name="data")]
    public List<Post> Data { get; set; }
}

[DataContract]
public class Post
{
    [DataMember(Name="id")]
    public string Id { get; set; }
    [DataMember(Name="from")]
    public From From { get; set; }
    [DataMember(Name="message")]
    public string Message { get; set; }
    [DataMember(Name="picture")]
    public string Picture { get; set; }
    [DataMember(Name="likes")]
    public DataContainer Likes { get; set; }
}

[DataContract]
public class DataContainer
{
    [DataMember(Name="data")]
    public List<Like> Data { get; set; }
}

[DataContract]
public class From
{
    [DataMember(Name="category")]
    public string Category { get; set; }
    [DataMember(Name="name")]
    public string Name { get; set; }
    [DataMember(Name="id")]
    public string Id { get; set; }
}

[DataContract]
public class Like
{
    [DataMember(Name="id")]
    public string Id { get; set; }
    [DataMember(Name="name")]
    public string Name { get; set; }
}

[DataContract]
公共类JsonRoot
{
[DataMember（Name=“data”）]
公共列表数据{get；set；}
}
[数据合同]
公营职位
{
[数据成员（Name=“id”）]
公共字符串Id{get；set；}
[DataMember（Name=“from”）]
来自{get；set；}的公共
[DataMember（Name=“message”）]
公共字符串消息{get；set；}
[DataMember（Name=“picture”）]
公共字符串图片{get；set；}
[DataMember（Name=“likes”）]
公共数据容器{get；set；}
}
[数据合同]
公共类数据容器
{
[DataMember（Name=“data”）]
公共列表数据{get；set；}
}
[数据合同]
公共课
{
[DataMember（Name=“category”）]
公共字符串类别{get；set；}
[数据成员（Name=“Name”）]
公共字符串名称{get；set；}
[数据成员（Name=“id”）]
公共字符串Id{get；set；}
}
[数据合同]
公共类
{
[数据成员（Name=“id”）]
公共字符串Id{get；set；}
[数据成员（Name=“Name”）]
公共字符串名称{get；set；}
}

---

同样的基本结构也适用于Newtonsoft Json库，但您需要将属性与其对应的Newtonsoft替代项切换出去。

或者，感谢：

    using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Text;
    using System.Text.Json; // Repo: https://github.com/ysharplanguage/FastJsonParser

你也可以写：

    public class From
    {
        public string id { get; set; }
        public string name { get; set; }
        public string category { get; set; }
    }

    public class Post
    {
      public string id { get; set; }
      public From from { get; set; }
      public string message { get; set; }
      public string picture { get; set; }
      public Dictionary<string, Like[]> likes { get; set; }
    } 

    public class Like
    {
        public string id { get; set; }
        public string name { get; set; }
    }

使用：

---

“嗯，

告诉我们您是如何定义

之类的
class@YuvalItzchakov请检查大小写是否需要与整个json匹配。将
JsonProperty
属性添加到所有属性中，并使用适当的小写字母。@YuvalItzchakov我不明白你想表达什么。您可以用一些例子来详细说明吗？只需使用
JsonProperty
属性装饰整个类，并传入小写名称：
[JsonProperty（id）]
，
[JsonProperty（name）]
    public class From
    {
        public string id { get; set; }
        public string name { get; set; }
        public string category { get; set; }
    }

    public class Post
    {
      public string id { get; set; }
      public From from { get; set; }
      public string message { get; set; }
      public string picture { get; set; }
      public Dictionary<string, Like[]> likes { get; set; }
    } 

    public class Like
    {
        public string id { get; set; }
        public string name { get; set; }
    }

        var SO_26426594_input = @"{ ""data"": [
{
  ""id"": ""post 1"", 
  ""from"": {
    ""category"": ""Local business"", 
    ""name"": ""..."", 
    ""id"": ""...""
  }, 
  ""message"": ""..."", 
  ""picture"": ""..."", 
  ""likes"": {
    ""data"": [
      {
        ""id"": ""like 1"", 
        ""name"": ""text 1...""
      }, 
      {
        ""id"": ""like 2"", 
        ""name"": ""text 2...""
      }
    ]
  }
} ] }";

        var posts = new JsonParser().Parse<Dictionary<string, Post[]>>(SO_26426594_input);

        System.Diagnostics.Debug.Assert(posts != null && posts["data"][0].id == "post 1");
        System.Diagnostics.Debug.Assert(posts != null && posts["data"][0].from.category == "Local business");
        System.Diagnostics.Debug.Assert(posts != null && posts["data"][0].likes["data"][0].id == "like 1");
        System.Diagnostics.Debug.Assert(posts != null && posts["data"][0].likes["data"][1].id == "like 2");