Jil - Fast .NET JSON (De)Serializer

Jil 是 JSON 處理的套件，號稱比 JSON.NET 更快，甚至是當前套件中處理起來第二快的，僅次於 Protobuf。

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{% img /images/posts/Jil/2.png %}

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只要加入 NuGet 參考，Using Jil 命名空間即可開始使用。

要序列化時，可將物件帶入 JSON.Serialize 方法，方法會回傳序列化後的 JSON 字串。

...
var json = JSON.Serialize(larry);
...

解序列化時，可將 JSON 字串帶入 JSON.Deserialize，並利用範型指定所要解回的物件型態即可。

...
larry = JSON.Deserialize<Person>(json);
...

此外，它也支援動態解析的能力，使用上只要將 JSON 字串帶入 JSON.DeserializeDynamic 即會回傳 Dynamic 物件。

...
var person = JSON.DeserializeDynamic(json);
...

完整的操作範例如下：

using Jil;
using System;

namespace ConsoleApplication5
{
    class Program
    {
        static void Main(string[] args)
        {
            var larry = new Person
            {
                Name = "Larry Nung",
                NickName = "Larry"
            };

            var json = JSON.Serialize(larry);

            Console.WriteLine(json);


            larry = JSON.Deserialize<Person>(json);

            Console.WriteLine("{0} ({1})", larry.Name, larry.NickName);

          
            var person = JSON.DeserializeDynamic(json);

            Console.WriteLine("{0} ({1})", person.Name, person["NickName"]);
        }
    }

    public class Person
    {
        public String Name { get; set; }

        public String NickName { get; set; }
    }
}

{% img /images/posts/Jil/7.png %}

接著我們看一下序列化時效能上的比較：

using Jil;
using Newtonsoft.Json;
using System;
using System.Diagnostics;
using System.IO;
namespace ConsoleApplication5
{
    class Program
    {
        static void Main(string[] args)
        {
            Person Larry = new Person
            {
                Name = "Larry Nung",
                NickName = "蹂躪"
            };

            var count = 1000000;

            Console.WriteLine("Newtonsoft: {0} ms", DoTest(count, () =>
            {
                var json = JsonConvert.SerializeObject(Larry);
            }));

            Console.WriteLine("Jil: {0} ms", DoTest(count, () =>
            {
                var json = JSON.Serialize(Larry);
            }));
        }

        static long DoTest(int count, Action action)
        {
            var sw = Stopwatch.StartNew();
            for (int i = 0; i < count; ++i) action();
            return sw.ElapsedMilliseconds;
        }
    }

    public class Person
    {
        public String Name { get; set; }

        public String NickName { get; set; }
    }
}

{% img /images/posts/Jil/8.png %}

{% img /images/posts/Jil/9.png %}

接著看一下解列化時的效能比較：

using Jil;
using Newtonsoft.Json;
using System;
using System.Diagnostics;
using System.IO;

namespace ConsoleApplication5
{
    class Program
    {
        static void Main(string[] args)
        {
            Person Larry = new Person
            {
                Name = "Larry Nung",
                NickName = "蹂躪"
            };

            var json = JsonConvert.SerializeObject(Larry);
            var count = 1000000;

            Console.WriteLine("Newtonsoft: {0} ms", DoTest(count, () =>
            {
                var person = JsonConvert.DeserializeObject<Person>(json);
            }));

            Console.WriteLine("Jil: {0} ms", DoTest(count, () =>
            {
                var person = JSON.Deserialize<Person>(json);
            }));
        }

        static long DoTest(int count, Action action)
        {
            var sw = Stopwatch.StartNew();
            for (int i = 0; i < count; ++i) action();
            return sw.ElapsedMilliseconds;
        }
    }

    public class Person
    {
        public String Name { get; set; }

        public String NickName { get; set; }
    }
}

{% img /images/posts/Jil/10.png %}

{% img /images/posts/Jil/11.png %}

可以看到 Jil 在 JSON 的處理上的確有著較佳的效率。