.net中解析json 之 json.net

download resurce :http://json.codeplex.com/releases/view/50552

下载的文件中包含了Newtonsoft.Json.dll和大量的实例及其帮助文件

 

Serialization Example

 

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 json = JsonConvert.SerializeObject(product);
//{
//  "Name": "Apple",
//  "Expiry": new Date(1230422400000),
//  "Price": 3.99,
//  "Sizes": [
//    "Small",
//    "Medium",
//    "Large"
//  ]
//}
//反序列化
//单记录 
Product deserializedProduct = JsonConvert.DeserializeObject<Product>(json);
//集合
List<Product> deserializedproducts=JsonConvert.DeserializeObject<List<Product>>(json);

 

LINQ to JSON Example

 

string json = @"{ ""Name"": ""Apple"", ""Expiry"": new Date(1230422400000), ""Price"": 3.99, ""Sizes"": [ ""Small"", ""Medium"", ""Large"" ]}"; JObject o = JObject.Parse(json); string name = (string)o["Name"];// Apple JArray sizes = (JArray)o["Sizes"]; string smallest = (string)sizes[0];// Small

 

DeserializeJsonSting Example(dictionary)

 

string json = @"{""key1"":""value1"",""key2"":""value2""}"; Dictionary<string, string> values = JsonConvert.DeserializeObject<Dictionary<string, string>>(json); Response.Write(values.Count); Response.Write(values["key2"]);  

 

CustomerJsonString Example

 

StringBuilder sb = new StringBuilder(); StringWriter sw = new StringWriter(sb); using (JsonWriter jsonwriter = new JsonTextWriter(sw)) { jsonwriter.Formatting = Formatting.Indented; //开始写 jsonwriter.WriteStartObject(); jsonwriter.WritePropertyName("people"); jsonwriter.WriteStartArray(); jsonwriter.WriteStartObject(); jsonwriter.WritePropertyName("UserName"); jsonwriter.WriteValue("t1"); jsonwriter.WritePropertyName("Password"); jsonwriter.WriteValue("11111111"); jsonwriter.WritePropertyName("Sex"); jsonwriter.WriteValue("male"); jsonwriter.WriteEndObject(); jsonwriter.WriteStartObject(); jsonwriter.WritePropertyName("UserName"); jsonwriter.WriteValue("t2"); jsonwriter.WritePropertyName("Password"); jsonwriter.WriteValue("2222222"); jsonwriter.WritePropertyName("Sex"); jsonwriter.WriteValue("女"); jsonwriter.WriteEndObject(); //结束 jsonwriter.WriteEnd(); jsonwriter.WriteEndObject(); } Response.Write(sb);