Newtonsoft.Json序列化和反序列

//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);这里下载:http://www.newtonsoft.com/products/json/
安装:
1. 解压下载文件,得到Newtonsoft.Json.dll
2.在项目中添加引用..
序列化和反序列在.net项目中:

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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));
Product product = new Product();

product.Name = "Apple";
product.Expiry = new DateTime(2008,28);
product.Price = 3.99M;
product.Sizes = new string[] { "Small","Large" };

string output = javascriptConvert.SerializeObject(product);
//{
// "Name": "Apple",
// "Sizes": [
// "Small",
// "Large"
// ]
//}

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

读取JSON

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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))
}
string jsonText = "['JSON!',{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

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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!',{property:'value'}]
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!',{property:'value'}]

这里会打印出: ['JSON!',{property:'value'}] .

（编辑：李大同）

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