C# JSON转为实体类和List，以及结合使用

引用

using Newtonsoft.Json;using Newtonsoft.Json.Linq;

JSON转实体类

public class Person
{public string Name { get; set; }public int Age { get; set; }public string Gender { get; set; }
}

string jsonStr = "{\"name\": \"Tom\", \"age\": 20, \"gender\": \"male\"}";
Person person = JsonConvert.DeserializeObject<Person>(jsonStr);

JSON转List

方法一

json

{"data":{[{"Id":"0","Username":"Vreeswijk","ProfilePicture":"media/user/0.png"}],[{"Id":"1","Username":"Mony","ProfilePicture":"media/user/12.png"}]}
}

实现

JObject obj = JObject.Parse(json);//Shou是于json中数组一个元素所对应的类
List<Shou> root = JsonConvert.DeserializeObject<List<Shou>>(obj["data"].ToString());

方法二

json：

{"user":{[{"Id":"0","Username":"Vreeswijk","ProfilePicture":"media/user/0.png"}]},"token":{[{"access_token":"myToken1","refresh_token":"myToken2","expires_in":3600,"expires_on":1577363756}]}
}

两个类：

public class Token
{public string access_token { get; set; }public string refresh_token { get; set; }public int expire_in { get; set; }public int expire_on { get; set; }//省略了构造方法
}public class User
{public int Id { get; set; }public string Username { get; set; }public string Password { get; set; }public string ProfilePicture { get; set; }//省略了构造方法
}

实现

var jObject = JObject.Parse(json);
var userPropery = jObject["user"] as JArray;
List<User> userList= new List<User>();foreach (var property in userPropery )
{var propertyList = JsonConvert.DeserializeObject<List<user>>(property.ToString());//List集合中的AddRange方法和Add方法的不同之处在于，Add方法为在集合末尾添加单个元素对象，而AddRange方法可以为添加整个目标list集合。userList.AddRange(propertyList);
}

结合使用

json：

{"number": 1,"day": "星期九","user":{[{"Id":"0","Username":"Vreeswijk","ProfilePicture":"media/user/0.png"}]},"token":{"access_token":"myToken1","refresh_token":"myToken2","expires_in":3600,"expires_on":1577363756}
}

两个类：

public class Token
{public string access_token { get; set; }public string refresh_token { get; set; }public int expire_in { get; set; }public int expire_on { get; set; }//省略了构造方法
}public class User
{public int Id { get; set; }public string Username { get; set; }public string Password { get; set; }public string ProfilePicture { get; set; }//省略了构造方法
}public class Data
{public int number { get; set; }public string day { get; set; }public List<User> userList { get; set; }public Token token { get; set; }//省略了构造方法
}

实现

var jObject = JObject.Parse(json);List<User> userList = JsonConvert.DeserializeObject<List<Shou>>(jObject["data"].ToString());
Token token = JsonConvert.DeserializeObject<Token>(jObject["token"]);
int number = int.Parse(jObject["number"]);
string day = jObject["day"].ToString();Data data = new Data(number,day,userList,token);