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
代码实例：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Net; namespace JsonUtils
{
class Program
{
static void Main(string[] args)
{
WebClient client = new WebClient();
string json = @"{""errNo"":""0"", data : { ""31"": { ""content"": { ""week"": ""周三"" , ""city"": ""上海"" , ""today"": { ""condition"": ""多云"" , ""temp"": ""35~28℃"" , ""wind"": ""南风3-4级"" , ""imgs"": [ ""a1"" , ""a1"" ] , ""img"": [ ""http:\/\/open.baidu.com\/stat\/weather\/newday\/01.gif"" , ""http:\/\/open.baidu.com\/stat\/weather\/newnight\/01.gif"" ] , ""link"": ""http:\/\/www.weather.com.cn\/html\/weather\/101020100.shtml"" , ""pm25"": ""76"" , ""pollution"": ""10"" , ""pm25url"": ""http:\/\/www.baidu.com\/s?wd=%E4%B8%8A%E6%B5%B7%E7%A9%BA%E6%B0%94%E8%B4%A8%E9%87%8F%E6%8C%87%E6%95%B0"" , ""pmdate"": false } , ""tomorrow"": { ""condition"": ""多云转阵雨"" , ""temp"": ""36~27℃"" , ""wind"": ""南风3-4级"" , ""imgs"": [ ""a1"" , ""a1"" ] , ""img"": [ ""http:\/\/open.baidu.com\/stat\/weather\/newday\/01.gif"" , """" ] , ""link"": ""http:\/\/www.weather.com.cn\/html\/weather\/101020100.shtml"" , ""pm25"": ""76"" , ""pollution"": ""10"" , ""pm25url"": ""http:\/\/www.baidu.com\/s?wd=%E4%B8%8A%E6%B5%B7%E7%A9%BA%E6%B0%94%E8%B4%A8%E9%87%8F%E6%8C%87%E6%95%B0"" , ""pmdate"": false } , ""thirdday"": { ""condition"": ""阵雨转阴"" , ""temp"": ""32~24℃"" , ""wind"": ""北风3-4级"" , ""imgs"": [ ""a3"" , ""a1"" ] , ""img"": [ ""http:\/\/open.baidu.com\/stat\/weather\/newday\/03.gif"" , """" ] , ""link"": ""http:\/\/www.weather.com.cn\/html\/weather\/101020100.shtml"" , ""pm25"": ""76"" , ""pollution"": ""10"" , ""pm25url"": ""http:\/\/www.baidu.com\/s?wd=%E4%B8%8A%E6%B5%B7%E7%A9%BA%E6%B0%94%E8%B4%A8%E9%87%8F%E6%8C%87%E6%95%B0"" , ""pmdate"": false } , ""linkseven"": ""http:\/\/www.weather.com.cn\/html\/weather\/101020100.shtml#7d"" , ""source"": { ""name"": ""中国气象频道"" , ""url"": ""http:\/\/www.mywtv.cn\/"" } , ""cityname"": ""上海"" , ""ipcity"": ""上海"" , ""ipprovince"": ""上海"" , ""isauto"": true } , ""setting"": ""自动"" } } }"; JsonObject value = JsonObject.Parse(json); Console.Write(value["data"]["31"]["content"]["thirdday"]["img"][0].Text());
Console.Read(); }
}
}
封装的类：
/*
* Copyright (C) 2013 cnblogs.com All Rights Reserved
*
* Description : Json字串解析成字典
* Auther : gateluck
* CreateDate : 2013-08-27
* History :
*/
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 Cast(obj);
} /// <summary>
/// 将普通字典类型转为JsonObject
/// </summary>
private static JsonObject Cast(object value)
{
var obj = new JsonObject(); //如果是数组
if (value is object[])
{ List<JsonObject> list = new List<JsonObject>(); object[] array = (object[])value;
for (int i = 0; i < array.Length; i++)
{
list.Add(Cast(array[i]));
}
obj.Value = list.ToArray();
}
//如果是字典
else if (value is Dictionary<string, object>)
{
var dict = value as Dictionary<string, object>;
var dict2 = new Dictionary<string, JsonObject>();
foreach (var entry in dict)
{
dict2.Add(entry.Key, Cast(entry.Value));
}
obj.Value = dict2;
}
//如果是普通类
else
{
obj.Value = value;
}
return obj;
} /// <summary>
/// 取对象的属性
/// </summary>
public JsonObject this[string key]
{
get
{
var dict = this.Value as Dictionary<string, JsonObject>;
if (dict != null && dict.ContainsKey(key))
{
return dict[key];
} return new JsonObject();
} }
/// <summary>
/// 取数组
/// </summary>
public JsonObject this[int index]
{
get
{
var array = this.Value as JsonObject[];
if (array != null && array.Length > index)
{
return 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 JsonObject[];
if (array != null)
{
return array.Length;
}
return 0;
}
}
}
}
分类: DotNet, HTML/JS/CSS