Json序列化

JSON基本数据格式:

 1.JSON对象   

{"name":"很帅很低调" , "age":20 , "Handsome":true}

 2.JSON数组

[{"name":"很帅很低调" , "age":20 , "Handsome":true},{"name":"弟弟" , "age":18 , "Handsome":false}]

 3.复杂一点的JSONObject

{"name":"很帅很低调", "age":20, "Handsome":true, "address":{"street":"湖北", "city":"武汉","country":"中国"}}

 4.复杂一点的JSONArray

[{"name":"很帅很低调","age":20,"Handsome":true,"address":{"street":"湖北","city":"武汉","country":"中国"}},{"name":"弟弟","age":18,"Handsome":false,"address":{"street":"湖北","city":"黄冈","country":"中国"}}]

5.更复杂的

{
    "video": {
        "id": "29BA6ACE7A9427489C33DC5901307461",
        "title": "体验课",
        "desp": "",
        "tags": " ",
        "duration": 503,
        "category": "07AD1E11DBE6FDFC",
        "image": "http://2.img.bokecc.com/comimage/0DD1F081022C163E/2016-03-09/29BA6ACE7A9427489C33DC5901307461-0.jpg",
        "imageindex": 0,
        "image-alternate": [{
            "index": 0,
            "url": "http://2.img.bokecc.com/comimage/0DD1F081022C163E/2016-03-09/29BA6ACE7A9427489C33DC5901307461-0/0.jpg"
        }, {
            "index": 1,
            "url": "http://2.img.bokecc.com/comimage/0DD1F081022C163E/2016-03-09/29BA6ACE7A9427489C33DC5901307461-0/1.jpg"
        }, {
            "index": 2,
            "url": "http://2.img.bokecc.com/comimage/0DD1F081022C163E/2016-03-09/29BA6ACE7A9427489C33DC5901307461-0/2.jpg"
        }, {
            "index": 3,
            "url": "http://2.img.bokecc.com/comimage/0DD1F081022C163E/2016-03-09/29BA6ACE7A9427489C33DC5901307461-0/3.jpg"
        }]
    },
    "type": 1,
    "play": true
}

 刚开始接触的时候，不是很懂，为什么要写这几种格式，是因为有时候会拼接json字符串，所以熟悉json格式很有必要。

JSON序列化对象：

using Newtonsoft.Json;(别忘记引用)

public class Root
{
    //序列化时指定属性在JSON中的顺序

    [JsonProperty(Order = 0)]       
    public string name { get; set; }

    [JsonProperty(Order = 1)]
    public int age { get; set; } 

    [JsonProperty(Order = 2)]
    public string Handsome { get; set; } 
}

public static string SerJson()
{
  Root root = new Root
  {
    name = "很帅很低调",
    age = 20,
    Handsome = "true"
   };
  string json = JsonConvert.SerializeObject(root);
  return json;
}

结果：

{"name":"很帅很低调" , "age":20 , "Handsome":true}

JSON序列化list集合：

public static string ListJson()
{
   List<string> videogames = new List<string> { "名字", "性别", "年龄" };
   string json = JsonConvert.SerializeObject(videogames);
   return json;
}

结果：

["名字","性别","年龄"]

JSON序列化Dictionary字典：

public static string DicJson() 
{
    Dictionary<string,int> dic = new Dictionary<string,int> 
   {
       { "ming",20},
       { "uzi",21},
       { "the rang",22}
   };
   string json = JsonConvert.SerializeObject(dic, Formatting.Indented);//Formatting.Indented形成良好的格式
   return json;
 }

结果：

{
  "ming": 20,
  "uzi": 21,
  "the rang": 22
}

序列化的结果保存指定文件：

public static void FileJosn()
{
   Root root = new Root
   {
                name = "很帅很低调",
                age = 20,
                Handsome = "true"
   };
   using (StreamWriter file = File.CreateText(@"e:\file.json"))
   {
      JsonSerializer jsonSerializer = new JsonSerializer();
       jsonSerializer.Serialize(file, root);
   }
}

 基于枚举的JsonConverters转换器：

public enum StringEnum{ one = 1,two = 2,three = 3}

public static void JsonEnum()
{
     List<StringEnum> list = new List<StringEnum> {
            StringEnum.one,
            StringEnum.three
        };
     string jsonWithoutConverter = JsonConvert.SerializeObject(list);
     Console.WriteLine(jsonWithoutConverter);
}

结果：

[1,3]