如何利用.Net内置类，解析未知复杂Json对象

如果你乐意，当然可以使用强大的第三方类库Json.Net中的JObject类解析复杂Json字串 。

我不太希望引入第三方类库，所以在.Net内置类JavaScriptSerializer.DeserializeObject的基础上做了一些封装，可以方便的读取复杂json中的内容，而无需专门定义对应的类型。

等不及看的，直接下载源码： JsonObject.7z （2013-08-29更新，第三版）

 

代码实例：

 

namespace JsonUtils{class Program{static void Main(string[] args){string json = "{errNo:0,data:[{id:100,name:'jack'},{id:101,name:'tom',info:{birthday:'1989-6-5'}}]} ";JsonObject value = JsonObject.Parse(json);Console.Write(value["data"][1]["info"]["birthday"].Text());Console.Read();}}}

 

封装的类：

 

using System;using System.Collections.Generic;using System.Text;using System.Web.Script.Serialization;namespace JsonUtils{public class JsonObject{/// <summary>/// 解析JSON字串/// </summary>public static JsonObject Parse(string json){var js = new JavaScriptSerializer();object obj = js.DeserializeObject(json);return new JsonObject(){Value = obj};}/// <summary>/// 取对象的属性/// </summary>public JsonObject this[string key]{get{var dict = this.Value as Dictionary<string, object>;if (dict != null && dict.ContainsKey(key)){return new JsonObject { Value = dict[key] };}return new JsonObject();}}/// <summary>/// 取数组/// </summary>public JsonObject this[int index]{get{var array = this.Value as object[];if (array != null && array.Length > index){return new JsonObject { Value = array[index] };}return new JsonObject();}}/// <summary>/// 将值以希望类型取出/// </summary>public T GetValue<T>(){return (T)Convert.ChangeType(Value, typeof(T));}/// <summary>/// 取出字串类型的值/// </summary>public string Text(){return Convert.ToString(Value);}/// <summary>/// 取出数值/// </summary>public double Number(){return Convert.ToDouble(Value);}/// <summary>/// 取出整型/// </summary>public int Integer(){return Convert.ToInt32(Value);}/// <summary>/// 取出布尔型/// </summary>public bool Boolean(){return Convert.ToBoolean(Value);}/// <summary>/// 值/// </summary>public object Value{get;private set;}/// <summary>/// 如果是数组返回数组长度/// </summary>public int Length{get{var array = this.Value as object[];if (array != null){return array.Length;}return 0;}}}}