微软的Serialize和Newtonsoft的SerializeObject比较

微软的序列化反序列化组件出来已有好几年了，刚出来的时候各种吐槽。最近在优化代码，比较了一下微软的Serialize和Newtonsoft的SerializeObject，感觉大部分场景下可以用微软的序列化组件了，Newtonsoft第三方可能被我放弃掉。测试有交换顺序，也有多次测试。

using Newtonsoft.Json;
using System;
using System.Diagnostics;
namespace JsonTest
{
    internal class Program
    {
        static void Main(string[] args)
        {
            var count = 10_000;
            var elapsedMilliseconds = Serialize(count, () =>
             {
                 JsonConvert.SerializeObject(new WeatherForecast
                 {
                     Date = DateTime.Now,
                     Summary = "Hot",
                     TemperatureCelsius = 88
                 });
             });
            Console.WriteLine($"serialize object count:{count}, newtonsoft used: {elapsedMilliseconds} seconds");

            elapsedMilliseconds = Serialize(count, () =>
            {
                System.Text.Json.JsonSerializer.Serialize(new WeatherForecast
                {
                    Date = DateTime.Now,
                    Summary = "Hot",
                    TemperatureCelsius = 88
                });
            });
            Console.WriteLine($"serialize object count:{count}, textjson used : {elapsedMilliseconds} seconds");

            Console.WriteLine("***************************************************");

            count = 10_000_000;
            elapsedMilliseconds = Serialize(count, () =>
           {
               JsonConvert.SerializeObject(new WeatherForecast
               {
                   Date = DateTime.Now,
                   Summary = "Hot",
                   TemperatureCelsius = 88
               });
           });
            Console.WriteLine($"serialize object count:{count}, newtonsoft used: {elapsedMilliseconds} seconds");

            elapsedMilliseconds = Serialize(count, () =>
            {
                System.Text.Json.JsonSerializer.Serialize(new WeatherForecast
                {
                    Date = DateTime.Now,
                    Summary = "Hot",
                    TemperatureCelsius = 88
                });
            });
            Console.WriteLine($"serialize object count:{count}, textjson used : {elapsedMilliseconds} seconds");
            Console.ReadKey();

            /*
             serialize object count:10000, newtonsoft used: 288 seconds
            serialize object count:10000, textjson used : 45 seconds
            ***************************************************
            serialize object count:10000000, newtonsoft used: 10324 seconds
            serialize object count:10000000, textjson used : 5681 seconds
             */
        }

        static long Serialize(int count, Action action)
        {
            Stopwatch stopwatch = Stopwatch.StartNew();
            for (int i = count; i > 0; i--)
            {
                action();
            }
            stopwatch.Stop();
            var result = stopwatch.ElapsedMilliseconds;
            stopwatch.Reset();
            return result;
        }
    }
    internal class WeatherForecast
    {
        public DateTimeOffset Date { get; set; }
        public int TemperatureCelsius { get; set; }
        public string Summary { get; set; }
    }
}

当然如果加上JsonSerializerOptions，而且全部配置起来性能就会有所下降，毕竟这么多配置在这呢，但是这样也会更加灵活。

下面是反序列化的例子，速度和序列化比较差不多。

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

namespace JsonTest
{
    internal class App
    {
        static void Main(string[] args)
        {
            var jsonStr = "{\"Date\":\"2019 - 08 - 01T00: 00:00 - 07:00\",\"TemperatureCelsius\":25,\"Summary\":\"Hot\",\"DatesAvailable\":[\"2019 - 08 - 01T00: 00:00 - 07:00\",\"2019 - 08 - 02T00: 00:00 - 07:00\"],\"TemperatureRanges\":{\"Cold\":{\"High\":20,\"Low\":-10},\"Hot\":{\"High\":60,\"Low\":20}},\"SummaryWords\":[\"Cool\",\"Windy\",\"Humid\"]}";
            var count = 10_000;
            var elapsedMilliseconds = Derialize(count, () =>
            {
                JsonConvert.DeserializeObject<Student>(jsonStr);
            });
            Console.WriteLine($"deserialize object count:{count}, newtonsoft used: {elapsedMilliseconds} seconds");

            elapsedMilliseconds = Derialize(count, () =>
            {
                System.Text.Json.JsonSerializer.Deserialize<Student>(jsonStr);
            });
            Console.WriteLine($"deserialize object count:{count}, textjson used : {elapsedMilliseconds} seconds");

            Console.WriteLine("***************************************************");

            count = 10_000_000;
            elapsedMilliseconds = Derialize(count, () =>
            {
                JsonConvert.DeserializeObject<Student>(jsonStr);
            });
            Console.WriteLine($"deserialize object count:{count}, newtonsoft used: {elapsedMilliseconds} seconds");

            elapsedMilliseconds = Derialize(count, () =>
            {
                System.Text.Json.JsonSerializer.Deserialize<Student>(jsonStr);
            });
            Console.WriteLine($"deserialize object count:{count}, textjson used : {elapsedMilliseconds} seconds");
            /*
             deserialize object count:10000, newtonsoft used: 263 seconds
            deserialize object count:10000, textjson used : 56 seconds
            ***************************************************
            deserialize object count:10000000, newtonsoft used: 29726 seconds
            deserialize object count:10000000, textjson used : 12422 seconds

             */
            Console.ReadKey();
        }
        static long Derialize(int count, Action action)
        {
            Stopwatch stopwatch = Stopwatch.StartNew();
            for (int i = count; i > 0; i--)
            {
                action();
            }
            stopwatch.Stop();
            var result = stopwatch.ElapsedMilliseconds;
            stopwatch.Reset();
            return result;
        }

    }

    internal class Student
    {
        public DateTime BarthDay { get; set; }
        public int Age { get; set; }
        public string Name { get; set; }
    }
}

微软文档里面有各种介绍，不再详述！

 从 Newtonsoft.Json 迁移到 System.Text.Json - .NET | Microsoft Docs