Newtonsoft.Json 序列化和反序列化 以及时间格式 2

一、JSON使用JsonPropertyAttribute重命名属性名
1.先创建一个Movie对象，然后在其属性上添加JsonProperty，并指定重命名的名称。注意：属性Name和Director已指定。

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using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using GongHuiNewtonsoft.Json;

namespace JSONDemo

{

public class Movie

{

[JsonProperty("name")]

public string Name { get; set; }

[JsonProperty("Chinese Director")]

public string Director { get; set; }

public int ReleaseYear { get; set; }

}

}

2.实例化Movie对象，然后序列化。

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using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Data;

using GongHuiNewtonsoft.Json;

using GongHuiNewtonsoft.Json.Serialization;

using GongHuiNewtonsoft.Json.Converters;

namespace JSONDemo

{

class Program

{

static void Main(string[] args)

{

Movie m = new Movie

{

Name = "非诚勿扰1",

Director = "冯小刚",

ReleaseYear = 2008

};

string json = JsonConvert.SerializeObject(m, Formatting.Indented);

Console.WriteLine(json);

}

}

}

3.运行结果，注意：属性ReleaseYear未被重命名。



二、JSON使用JsonPropertyAttribute序列化升序排序属性
1.先创建一个Movie对象，然后指定JsonProperty，并添加Order属性。

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using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using GongHuiNewtonsoft.Json;

namespace JSONDemo

{

public class Movie

{

[JsonProperty(Order=4)]

public string Name { get; set; }

[JsonProperty(Order=0)]

public string Director { get; set; }

public int ReleaseYear { get; set; }

[JsonProperty(Order=-3)]

public string ChiefActor { get; set; }

[JsonProperty(Order=2)]

public string ChiefActress { get; set; }

}

}

2.实例化Movie对象，然后序列化。

[csharp] view plain copy

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Data;

using GongHuiNewtonsoft.Json;

using GongHuiNewtonsoft.Json.Serialization;

using GongHuiNewtonsoft.Json.Converters;

namespace JSONDemo

{

class Program

{

static void Main(string[] args)

{

Movie m = new Movie

{

Name = "非诚勿扰1",

Director = "冯小刚",

ReleaseYear = 2008,

ChiefActor="葛优",

ChiefActress="舒淇"

};

string json = JsonConvert.SerializeObject(m, Formatting.Indented);

Console.WriteLine(json);

}

}

}

3.运行结果。注意：未指定Order序号的属性，界定于大于负数小于正数，并按默认顺序排序。



三、JSON使用JsonPropertyAttribute反序列化属性时，Required指定属性性质
1.创建一个Movie对象，给属性添加JsonProperty，并指定其Required的性质。属性Name必须有值，DateTime可以为空.

[csharp] view plain copy

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using GongHuiNewtonsoft.Json;

namespace JSONDemo

{

public class Movie

{

[JsonProperty(Required=Required.Always)]

public string Name { get; set; }

[JsonProperty(Required = Required.AllowNull)]

public DateTime? ReleaseDate { get; set; }

public string Director { get; set; }

}

}

2.实例化Movie对象，反序列化JSON。

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using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Data;

using GongHuiNewtonsoft.Json;

using GongHuiNewtonsoft.Json.Serialization;

using GongHuiNewtonsoft.Json.Converters;

namespace JSONDemo

{

class Program

{

static void Main(string[] args)

{

string json = @"{

'Name':'举起手来1',

'Director':'冯小宁',

'ReleaseDate':null

}";

Movie m = JsonConvert.DeserializeObject<Movie>(json);

Console.WriteLine(m.Name);

Console.WriteLine(m.Director);

Console.WriteLine(m.ReleaseDate);

}

}

}

3.运行结果是



四、JSON使用JsonPropertyAttribute序列化引用类型集合
1.创建一个Director对象，并声明一个本身类型的属性，指定JsonProperty中的IsReference为true.

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using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using GongHuiNewtonsoft.Json;

namespace JSONDemo

{

public class Director

{

public string Name { get; set; }

[JsonProperty(IsReference=true)]

public Director ExecuteDir { get; set; }

}

}

2.创建一个Movie对象，声明一个Director集合的属性，指定JsonProperty中的IsReference为true.

[csharp] view plain copy

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using GongHuiNewtonsoft.Json;

namespace JSONDemo

{

public class Movie

{

public string Name { get; set; }

[JsonProperty(ItemIsReference=true)]

public IList<Director> Directors { get; set; }

}

}

3.序列化对象

[csharp] view plain copy

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Data;

using GongHuiNewtonsoft.Json;

using GongHuiNewtonsoft.Json.Serialization;

using GongHuiNewtonsoft.Json.Converters;

namespace JSONDemo

{

class Program

{

static void Main(string[] args)

{

Director dir = new Director

{

Name = "冯小刚"

};

Director dir1 = new Director

{

Name = "张艺谋",

ExecuteDir = dir

};

Movie m = new Movie

{

Name = "满城尽带黄金甲",

Directors = new List<Director>

{

dir,

dir1

}

};

string json = JsonConvert.SerializeObject(m, Formatting.Indented);

Console.WriteLine(json);

}

}

}

4.运行结果



五、JSON使用JsonPropertyAttribute序列化忽略属性null
1.创建一个Movie对象，并在属性上指定JsonProperty，添加NullValueHandling，忽略null

[csharp] view plain copy

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using GongHuiNewtonsoft.Json;

namespace JSONDemo

{

public class Movie

{

public string Name { get; set; }

public string Director { get; set; }

[JsonProperty(NullValueHandling=NullValueHandling.Ignore)]

public DateTime? LaunchDate { get; set; }

}

}

2.实例化对象Movie对象，然后序列化

[csharp] view plain copy

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Data;

using GongHuiNewtonsoft.Json;

using GongHuiNewtonsoft.Json.Serialization;

using GongHuiNewtonsoft.Json.Converters;

namespace JSONDemo

{

class Program

{

static void Main(string[] args)

{

Movie m = new Movie

{

Name = "爱情呼叫转移",

Director = "张建亚"

};

string json = JsonConvert.SerializeObject(m, Formatting.Indented);

Console.WriteLine(json);

}

}

}

3.运行的结果



JSON源代码下载地址：http://download.csdn.net/detail/lovegonghui/9342751

原文链接：http://blog.csdn.net/lovegonghui/article/details/50272743