在.NET中使用Newtonsoft.Json转换,读取,写入



using Newtonsoft.Json;

using Newtonsoft.Json.Converters;



//把Json字符串反序列化为对象

目标对象 = JavaScriptConvert.DeserializeObject(JSON字符串, typeof(目标对象));

//把目标对象序列化为Json字符串



string Json字符串 = JavaScriptConvert.SerializeObject(目标对象);



1.引用Newtonsoft.Json.dll

2.在项目中添加引用..

序列化和反序列在.net项目中:



Product product = new Product();



product.Name = "Apple";

product.Expiry = new DateTime(2008, 12, 28);

product.Price = 3.99M;

product.Sizes = new string[] { "Small", "Medium", "Large" };



string output = JavaScriptConvert.SerializeObject(product);

//{

// "Name": "Apple",

// "Expiry": new Date(1230422400000),

// "Price": 3.99,

// "Sizes": [

//      "Small",

//      "Medium",

//      "Large"

// ]

//}



Product deserializedProduct = (Product)JavaScriptConvert.DeserializeObject(output, typeof(Product));



读取JSON



string jsonText = "['JSON!',1,true,{property:'value'}]";



JsonReader reader = new JsonReader(new StringReader(jsonText));



Console.WriteLine("TokenType\t\tValueType\t\tValue");



while (reader.Read())

{

      Console.WriteLine(reader.TokenType + "\t\t" + WriteValue(reader.ValueType) + "\t\t" + WriteValue(reader.Value))

}



结果显示:

TokenType ValueType Value 

StartArray null null 

String System.String JSON! 

Integer System.Int32 1 

Boolean System.Boolean True 

StartObject null null 

PropertyName System.String property 

String System.String value 

EndObject null null 

EndArray null null



JSON写入

StringWriter sw = new StringWriter();

JsonWriter writer = new JsonWriter(sw);



writer.WriteStartArray();

writer.WriteValue("JSON!");

writer.WriteValue(1);

writer.WriteValue(true);

writer.WriteStartObject();

writer.WritePropertyName("property");

writer.WriteValue("value");

writer.WriteEndObject();

writer.WriteEndArray();



writer.Flush();



string jsonText = sw.GetStringBuilder().ToString();



Console.WriteLine(jsonText);

// ['JSON!',1,true,{property:'value'}]