j.net 实现json的序列化与反序列化

Posted 2020-10-11 不上，道

首先理解，json是一种数据格式，而非一种数据类型。json格式的数据类型在c#中为string

开始测试：

使用Newtonsoft.Json包

一：json转object

using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace JsonTest
{
    class Program
    {
        static void Main(string[] args)
        {
            //构造json字符串
            var json = "{ \'people\':" +
                "[{ \'firstName\': \'Brett\', \'lastName\':\'McLaughlin\', \'email\': \'aaaa\' }," +
                "{ \'firstName\': \'Jason\', \'lastName\':\'Hunter\', \'email\': \'bbbb\'}," +
                "{ \'firstName\': \'Elliotte\', \'lastName\':\'Harold\', \'email\': \'cccc\' }]}";
            //使用Newtonsoft.Json中的JsonConvert转换json
            var jsonObj = JsonConvert.DeserializeObject<PeopleFather>(json);
            foreach (People item in jsonObj.people) {
                Console.WriteLine("firstName:"+item.firstName);
                Console.WriteLine("lastName:" + item.lastName);
                Console.WriteLine("email:" + item.email);
                Console.WriteLine("------");
            }
            Console.ReadLine();
        }
    }
    //构造json要转换的类
    public class PeopleFather {
       public List<People> people { get; set; }
    }
    public class People {
        public string firstName { get; set; }
        public string lastName { get; set; }
        public string email { get; set; }
    }
}

结果：

 二：对象类型转json

同样使用Newtonsoft.Json包

 static void Main(string[] agrs)
        {       
            var people = new People();
            people.firstName = "a";
            people.lastName = "b";
            people.email = "c";
            var json = JsonConvert.SerializeObject(people);
            Console.WriteLine(json);
            Console.ReadLine();
        }

 public class People {
        public string firstName { get; set; }
        public string lastName { get; set; }
        public string email { get; set; }
    }

需要说明的是

JsonConvert.SerializeObjectzai 被多次重载，还提供其它很多功能的支持