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我们。如有错误或未考虑完全的地方，望不吝赐教。