C# Newtonsoft.Json 解析多嵌套json 进行反序列化的实例

我就废话不多说啦，大家还是直接看代码吧~

[
{
 "orderNo": "3213123123123",
 "time": "2016-09-09 12:23:33",
 "orderStatus": "1",
 "freeShipping": true,
 "fullCut": 20,
 "originalCost": 340,
 "actualPayment": 320,
 "goods": [
  {
   "UserId": "5",
   "GoodsId": "8",
   "Total": 40,
   "Number": 2,
   "ConCcoin": 0,
   "PayMode": "支付宝",
   "Price": "20.00",
   "goodsImg": "UpLoadImg/GoodsImage/546fda6d-8417-4b8f-bac6-3084dca420a9.jpg",
   "shopname": "两颗牙",
   "goodsTitle": "周村烧饼",
   "manmoney": "200",
   "jianmoney": "20",
   "jianyoufei": "8"
  },
  {
   "UserId": "5",
   "GoodsId": "7",
   "Total": 60,
   "Number": 1,
   "ConCcoin": 0,
   "PayMode": "支付宝",
   "Price": "60.00",
   "goodsImg": "UpLoadImg/GoodsImage/931be419-e9d3-4dae-ae93-5af619c217d9.jpg",
   "shopname": "两颗牙",
   "goodsTitle": "山东特产山东大枣1000g",
   "manmoney": "200",
   "jianmoney": "0",
   "jianyoufei": "10"
  }
 ]
}
]

上面为要解析的JSON数据

var json = "[{\"orderNo\": \"3213123123123\",\"time\": \"2016-09-09 12:23:33\",\"orderStatus\":\"1\", \"freeShipping\": true, \"fullCut\": 20,\"originalCost\": 340, \"actualPayment\": 320,\"goods\": [";
  json += " {\"UserId\": \"5\",\"GoodsId\": \"8\", \"Total\": 40, \"Number\": 2, \"Price\": \"20.00\", \"shopname\": \"两颗牙\", \"manmoney\": \"200\", \"jianmoney\": \"0\",\"jianyoufei\": \"10\"},";
  json += " {\"UserId\": \"5\",\"GoodsId\": \"7\", \"Total\": 60, \"Number\": 1, \"Price\": \"60.00\",\"shopname\": \"两颗牙\", \"manmoney\": \"200\", \"jianmoney\": \"0\",\"jianyoufei\": \"10\"},";

json += " ]} ]";

OrderDetails[] datas = JsonConvert.DeserializeObject<OrderDetails[]>(json);
  List<OrderDetailsInsert> insert = new List<OrderDetailsInsert>();
  foreach (OrderDetails data in datas)
  {
   var shopname = string.Empty;//判断是否同一个商家
   foreach (var item in data.goods)
   {
    OrderDetailsInsert getinfo = new OrderDetailsInsert();
    getinfo.orderno = data.orderno;
    getinfo.time = data.time;
    getinfo.orderStatus = data.orderStatus;
    getinfo.actualPayment = data.actualPayment;
    getinfo.orderno = data.orderno;
    if (data.freeShipping == true)
    {
     getinfo.Remark = "此商品符合包邮条件及满" + item.manmoney + "减" + data.fullCut + "条件：订单总金额:" + data.originalCost + "符合满减条件减去：" + data.fullCut + "实际付款金额:" + data.actualPayment;
    }
    else if (!string.IsNullOrEmpty(data.fullCut.ToString()) && data.fullCut != 0)
    {
     getinfo.Remark = "此商品符合满" + item.manmoney + "减" + data.fullCut + "条件：订单总金额:" + data.originalCost + "符合满减条件减去：" + data.fullCut + "实际付款金额:" + data.actualPayment;
    }
    else
    {
     getinfo.Remark = "订单实际付款金额:" + data.actualPayment;
    }
    getinfo.GoodsId = item.GoodsId;
    getinfo.Total = item.Total;
    getinfo.Number = item.Number;
    getinfo.Price = item.Price;
    insert.Add(getinfo);
   }
  }

要用的对象类

public class OrderDetailsInsert
{
 public string orderno { get; set; }
 public DateTime time { get; set; }
 public char orderStatus { get; set; }
 public Decimal actualPayment { get; set; }
 public int GoodsId { get; set; }
 public string Total { get; set; }
 public int Number { get; set; }
 public string Price { get; set; }
 public string Remark { get; set; }
}

public class OrderDetails
{
 public string orderno { get; set; }
 public DateTime time { get; set; }
 public char orderStatus { get; set; }
 public bool freeShipping { get; set; }
 public Decimal fullCut { get; set; }
 public Decimal originalCost { get; set; }
 public Decimal actualPayment { get; set; }
 public GoodsInfoList[] goods { get; set; }
}

public class GoodsInfoList
{
 public int UserId { get; set; }
 public int GoodsId { get; set; }
 public string Total { get; set; }
 public int Number { get; set; }
 public string Price { get; set; }
 public string shopname { get; set; }
 public string manmoney { get; set; }

}

效果图：

补充：c#使用 Newtonsoft.Json 实现多态序列化

有时候会碰到以下情况

1.定义了一个类型为A的字段，但在实例化时使用的是它的派生类B。

2.定义了一个存储基类型A的集合，但实际上里面包含了各种各样的派生类。

上述两种情况在序列化的时候没有问题，但在反序列化的时候程序并不能将其转化为成派生类。

Newtonsoft.Json提供了一个JsonConverter特性，我们可以自定义某个数据的json读写方式以达成多态序列化的目的。

源码链接

1.自定义转化类

using System;
using System.Collections.Generic;
using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
using UnityEngine;
namespace XFramework.JsonConvter
{
/// <summary>
/// 用于多态列表的转化
/// </summary>
/// <typeparam name="T"></typeparam>
public class PolyListConverter<T> : JsonConverter
{
 public override bool CanConvert(Type objectType)
 {
  return true;
 }
 public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
 {
  var jObject = JObject.Load(reader);
  List<T> values = new List<T>();
  foreach (var item in jObject.Properties())
  {
   Type type = Type.GetType(item.Name);
   var value = item.Value.ToObject(type);
   values.Add((T)value);
  }
  return values;
 }
 public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
 {
  var values = (List<T>)value;
  JObject jObject = new JObject();
  foreach (var item in values)
  {
   jObject.Add(item.GetType().FullName, JToken.FromObject(item));
  }
  var p = jObject.Properties();
  foreach (var item in p)
  {
   Debug.Log(item.Name);
  }
  serializer.Serialize(writer, jObject);
 }
}
/// <summary>
/// 用于多态序列化
/// </summary>
public class PolyConverter : JsonConverter
{
 public override bool CanConvert(Type objectType)
 {
  return true;
 }
 public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
 {
  var jObject = JObject.Load(reader);
  foreach (var item in jObject.Properties())
  {
   Type type = Type.GetType(item.Name);
   var value = item.Value.ToObject(type);
   return value;
  }
  return null;
 }
 public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
 {
  JObject jObject = new JObject();
  jObject.Add(value.GetType().FullName, JToken.FromObject(value));
  serializer.Serialize(writer, jObject);
 }
}
}

2.使用方式

DataBase是自己定义的一个数据基类,按照以下写法，再利用Newtonsoft 的API 序列化和反序列化TestData就可以成功实现多态读写了。

using XFramework.JsonConvter;
using Newtonsoft.Json;
public class TestData
{
// 对应第一种情况
[JsonConverter(typeof(PolyConverter))]
public DataBase datas;

// 对应第二种情况
[JsonConverter(typeof(PolyListConverter<DataBase>))]
public List<EquipPowerBase> powerList;
}

以上为个人经验，希望能给大家一个参考，也希望大家多多支持脚本之家。如有错误或未考虑完全的地方，望不吝赐教。

来源：https://blog.csdn.net/kongwei521/article/details/52488977