Newtonsoft.Json 复杂结构类型的取值

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由于项目中需要取网页上的数据，但是数据时JSON格式的，于是听同事介绍了一个Newtonsoft.Json.dll文件

具体操作如下：

我的字符串类型为：

string str = "{ 'root':{ 'items': [{'Warehouse': '219410','City_St': 'Morrow,GA','Bales': '264'},{'Warehouse': '240124','City_St': 'Climax,'Bales': '88'},{'Warehouse': '266405','City_St': 'Funston,'Bales': '176'},{'Warehouse': '297005','City_St': 'Meigs,{'Warehouse': '710527','City_St': 'Greenville,SC','Bales': '440'}] }} " ;

需要循环取出Warehouse的值，这里我们使用了类构造函数

先定义所需要的类类型

publicclassMyList
{
Warehouse { get ; set ; }
City_St { ; }
}
Items
{
public IList<MyList> items { ; }
}
Root
{
Items root { ; }
}

然后就可以使用DecodeObject对象转换了

        string str = "{ 'root':{ 'items': [{'Warehouse': '219410','Bales': '440'}] }} ";
        Root T = Utility.JsonUtility.DecodeObject<Root>(str);
        for (int i = 0; i < T.root.items.Count; i++)
        {
            Response.Write(T.root.items[i].Warehouse+\n);
        }

输出结果如下图

完整代码如下:

 1 using System;
 2  System.Collections.Generic;
 3  System.Linq;
 4  System.Web;
 5  System.Web.UI;
 6  System.Web.UI.WebControls;
 7  Newtonsoft.Json;
 8  Newtonsoft.Json.Converters;
 9  System.IO;
10 
11 public partial class _Default : System.Web.UI.Page
12 {
13     protected void Page_Load(object sender,EventArgs e)
14     {
15         ;
16         Root T = Utility.JsonUtility.DecodeObject<Root>(str);
17         )
18         {
19             Response.Write(T.root.items[i].Warehouse+);
20         }
21     }
22 
23      MyList
24 25         string Warehouse { get; set; }
26         string City_St { 27 28      Items
29 30         public IList<MyList> items { 31 32      Root
33 34         public Items root { 35 36 
37     private static string StringFormat(string str,Type type)
38 39         if (type == typeof())
40 41             str = String2Json(str);
42             str = \"" + str + 43 44         else typeof(DateTime))
45 46             str = 47 48         bool49 50             str = str.ToLower();
51 52         return str;
53     } 
54 
55 }

注：项目中的Newtonsoft是有3个版本的.NET2.0 、3.5、 4.0 要引用对应的版本才能找到名称空间；

Utility.cs完整代码如下:

@H_771_403@ @H_14_404@
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using System;
System.Collections.Generic;
System.Linq;
System.Text;
Newtonsoft.Json.Converters;
Newtonsoft.Json;
System.IO;
/// <summary>
///JsonUtility 的摘要说明
/// </summary>
Utility
{
/// <summary>
/// Json工具类
/// </summary>
static JsonUtility
{
/// <summary>
/// 添加时间转换器
/// </summary>
/// <param name="serializer"></param>
private void AddIsoDateTimeConverter(JsonSerializer serializer)
{
IsoDateTimeConverter idtc = new IsoDateTimeConverter();
//定义时间转化格式
idtc.DateTimeFormat = "yyyy-MM-dd HH:mm:ss" ;
//idtc.DateTimeFormat = "yyyy-MM-dd";
serializer.Converters.Add(idtc);
}
/// <summary>
/// Json转换配置
/// </summary>
/// <param name="serializer"></param>
SerializerSetting(JsonSerializer serializer)
{
serializer.ReferenceLoopHandling = ReferenceLoopHandling.Ignore;
//serializer.NullValueHandling = NullValueHandling.Ignore;
//serializer.MissingMemberHandling = MissingMemberHandling.Ignore;
//serializer.DefaultValueHandling = DefaultValueHandling.Ignore;
}
/// <summary>
/// 返回结果消息编码
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="sucess"></param>
/// <param name="message"></param>
/// <param name="exMessage"></param>
/// <param name="data"></param>
/// <returns></returns>
ReturnMessage( bool sucess, int total,monospace!important; min-height:inherit!important">message,monospace!important; min-height:inherit!important">exMessage,monospace!important; min-height:inherit!important">data)
{
message = message.Replace( "'" , "" ).Replace( "\"" "<" ">" );
exMessage = exMessage.Replace( );
return .Format( "{{success:{0},total:{1},data:{2},message:\"{3}\",exMessage:\"{4}\"}}" sucess.ToString().ToLower(),total,data,message,exMessage);
}
/// <summary>
/// 返回失败信息
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="message"></param>
/// <param name="exMessage"></param>
/// <returns></returns>
ReturnFailureMessage( exMessage)
{
return false "[]" );
}
/// <summary>
/// 返回失败信息
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="message"></param>
/// <param name="exMessage"></param>
/// <returns></returns>
ReturnFailureMessageTouch( exMessage)
{
return "{\"success\":\"false\",\"msg\":\"" + exMessage + "\"}" ;
}
/// <summary>
/// 返回成功信息
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="total"></param>
/// <param name="message"></param>
/// <param name="exMessage"></param>
/// <param name="objList"></param>
/// <returns></returns>
ReturnSuccessMessage<T>( {
data = ListToJson<T>(objList);
true }
ReturnSuccessMessageTouch<T>(T obj)
{
data = ObjectToJson<T>(obj);
data;
@H_404_1358@}
/// <summary>
/// 返回成功信息
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="total"></param>
/// <param name="message"></param>
/// <param name="exMessage"></param>
/// <param name="objList"></param>
/// <returns></returns>
ReturnSuccessMessage( exMessage)
{
@H_935_1403@ );
}
/// <summary>
/// 返回成功信息
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="total"></param>
/// <param name="message"></param>
/// <param name="exMessage"></param>
/// <param name="objList"></param>
/// <returns></returns>
ReturnSuccessMessageTouch( exMessage)
{
"{\"success\":\"true\",monospace!important; min-height:inherit!important">+ message + ;
}
/// <summary>
/// 返回成功信息
/// </summary>
/// <param name="message"></param>
/// <param name="exMessage"></param>
/// <param name="data">JSON 对象</param>
/// <returns></returns>
data)
{
"[" + data + "]" );
}
/// <summary>
/// 返回成功消息
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="total"></param>
/// <param name="message"></param>
/// <param name="exMessage"></param>
/// <param name="obj"></param>
/// <returns></returns>
{
data = ObjectToJson<T>(obj);
}
/// <summary>
/// 把对象列表编码为Json数据
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="objList"></param>
/// <returns></returns>
ListToJson<T>(List<T> objList)
{
JsonSerializer serializer = JsonSerializer();
SerializerSetting(serializer);
AddIsoDateTimeConverter(serializer);
(TextWriter sw = StringWriter())
(JsonWriter writer = JsonTextWriter(sw))
{
serializer.Serialize(writer,objList);
sw.ToString();
}
}
/// <summary>
/// 把一个对象编码为Json数据
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="obj"></param>
/// <returns></returns>
ObjectToJson<T>(T obj)
{
JsonSerializer();
SerializerSetting(serializer);
AddIsoDateTimeConverter(serializer);
StringWriter())
JsonTextWriter(sw))
{
sw.ToString();
}
}
/// <summary>
/// 根据传入的Json数据，解码为对象(一个)
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="data"></param>
/// <returns></returns>
static T DecodeObject<T>( data)
{
JsonSerializer();
serializer.MissingMemberHandling = MissingMemberHandling.Ignore;
AddIsoDateTimeConverter(serializer);
StringReader sr = StringReader(data);
(T)serializer.Deserialize(sr,255)!important">typeof (T));
}
/// <summary>
/// 功能同DecodeObject
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="data"></param>
/// <returns></returns>
List<T> DecodeObjectList<T>( data)
{
JsonSerializer();
serializer.MissingMemberHandling = MissingMemberHandling.Ignore;
AddIsoDateTimeConverter(serializer);
StringReader(data);
(List<T>)serializer.Deserialize(sr,monospace!important; min-height:inherit!important">(List<T>));
}
EncodeAjaxResponseJson( jsonString,monospace!important; min-height:inherit!important">callback)
{
String responseString = ;
//判断是否jsonp调用
if (!String.IsNullOrEmpty(callback))
{
//jsonp调用，需要封装回调函数，并返回
responseString = callback + "(" + jsonString + ")" ;
}
else
{
//普通ajax调用，直接返回Json数据
responseString = jsonString;
}
responseString;
}
ExtGridSortInfo( property,monospace!important; min-height:inherit!important">direction)
{
"[{{\"property\":\"{0}\",\"direction\":\"{1}\"}}]" }
}
}
原文链接：https://www.f2er.com/json/290217.html

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