上一篇文章中我已经介绍了JsonBuilder方案的整体思路以及一个版本的雏形代码，他现在已经是可以使用的了，但是因为是实时反射的，所以效率并不高。

鉴于几位博友对Json转换组件的性能有兴趣，我先放几个常用组件的测试结果以供参考。下一篇在详细介绍JsonBuilder的优化工作

　　测试用例

using System;

using System.Collections.Generic;

/// <summary> 用户对象

/// </summary>

public class User

{

    public static User TestUser()

    {//这里我尽量构造一个看上去很复杂的对象,并且这个对象几乎涵盖了所有常用的类型

        User user = new User();

        user.UID = Guid.NewGuid();

        user.Birthday = new DateTime(, , , , , );

        user.IsDeleted = false;

        user.Name = "blqw";

        user.Sex = UserSex.Male;

        user.LoginHistory = new List<DateTime>();

        user.LoginHistory.Add(DateTime.Today.Add(new TimeSpan(, , )));

        user.LoginHistory.Add(DateTime.Today.Add(new TimeSpan(, , )));

        user.LoginHistory.Add(DateTime.Today.Add(new TimeSpan(, , )));

        user.LoginHistory.Add(DateTime.Today.Add(new TimeSpan(, , )));

        user.LoginHistory.Add(DateTime.Today.Add(new TimeSpan(, , )));

        user.Info = new UserInfo();

        user.Info.Address = "广东省广州市";

        user.Info.ZipCode = ;

        user.Info.Phone = new Dictionary<string, string>();

        user.Info.Phone.Add("手机", "");

        user.Info.Phone.Add("电话", "");

        user.Info.Phone.Add("短号", "");

        user.Info.Phone.Add("QQ", "");

        user.Double = Double.NegativeInfinity;

        // user.Self = user; //这里是用来测试循环引用的解析情况

        return user;

    }

    public User Self { get; set; }

    //User self

    /// <summary> 唯一ID

    /// </summary>

    public Guid UID { get; set; }

    /// <summary> 用户名称

    /// </summary>

    public string Name { get; set; }

    /// <summary> 生日

    /// </summary>

    public DateTime Birthday { get; set; }

    /// <summary> 性别

    /// </summary>

    public UserSex Sex { get; set; }

    /// <summary> 是否删除标记

    /// </summary>

    public bool IsDeleted { get; set; }

    /// <summary> 最近登录记录

    /// </summary>

    public List<DateTime> LoginHistory { get; set; }

    /// <summary> 联系信息

    /// </summary>

    public UserInfo Info { get; set; }

    public Double Double { get; set; }

}

/// <summary> 用户性别

/// </summary>

public enum UserSex

{

    /// <summary> 男

    /// </summary>

    Male,

    /// <summary> 女

    /// </summary>

    Female

}

/// <summary> 用户信息

/// </summary>

public class UserInfo

{

    /// <summary> 地址

    /// </summary>

    public string Address { get; set; }

    /// <summary> 联系方式

    /// </summary>

    public Dictionary<string, string> Phone { get; set; }

    /// <summary> 邮政编码

    /// </summary>

    public int ZipCode { get; set; }

}

测试用例

using System;

using System.Collections.Generic;

using System.Text;

using System.Diagnostics;

using System.Reflection.Emit;

using System.Data;

using fastJSON;

using System.IO;

using System.Threading;

namespace blqw

{

    class Program

    {

        static void Main(string[] args)

        {

            int count = ;

            var obj = User.TestUser();

            TestJavaScriptSerializer(count, obj);

            TestNewtonsoftJson(count, obj);

            TestJayrockJson(count, obj);

            TestFastJson(count, obj);

            TestQuickJsonBuilder(count, obj);

            TestJsonBuilder(count, obj);

        }

        //测试QuickJsonBuilder性能

        static void TestQuickJsonBuilder(int count, object obj)

        {

            Stopwatch sw = new Stopwatch();

            Console.WriteLine();

            Console.WriteLine("QuickJsonBuilder 每次" + count + " 共10次");

            for (int j = ; j < ; j++)

            {

                sw.Restart();

                for (int i = ; i < count; i++)

                {

                    QuickJsonBuilder jb = new QuickJsonBuilder();

                    jb.ToJson(obj);

                }

                sw.Stop();

                Console.Write(sw.ElapsedMilliseconds + "ms | ");

            }

            Console.WriteLine();

            Console.WriteLine("结果:" + new QuickJsonBuilder().ToJson(obj));

            Console.WriteLine("==============================================");

        }

        //测试FastJson性能

        static void TestFastJson(int count, object obj)

        {

            Stopwatch sw = new Stopwatch();

            JSONParameters p = new JSONParameters();

            p.EnableAnonymousTypes

                = p.IgnoreCaseOnDeserialize

                = p.ShowReadOnlyProperties

                = p.UseEscapedUnicode

                = p.UseExtensions

                = p.UseFastGuid

                = p.UseOptimizedDatasetSchema

                = p.UseUTCDateTime

                = p.UsingGlobalTypes

                = false;

            Console.WriteLine();

            Console.WriteLine("fastJSON.NET 每次" + count + " 共10次");

            for (int j = ; j < ; j++)

            {

                sw.Restart();

                for (int i = ; i < count; i++)

                {

                    fastJSON.JSON.Instance.ToJSON(obj, p);

                }

                sw.Stop();

                Console.Write(sw.ElapsedMilliseconds + "ms | ");

            }

            Console.WriteLine();

            Console.WriteLine("结果:" + fastJSON.JSON.Instance.ToJSON(obj, p));

            Console.WriteLine("==============================================");

        }

        //测试JayrockJson性能

        static void TestJayrockJson(int count, object obj)

        {

            Stopwatch sw = new Stopwatch();

            Console.WriteLine();

            Console.WriteLine("Jayrock.Json 每次" + count + " 共10次");

            for (int j = ; j < ; j++)

            {

                sw.Restart();

                for (int i = ; i < count; i++)

                {

                    var writer = new Jayrock.Json.JsonTextWriter();

                    Jayrock.Json.Conversion.JsonConvert.Export(obj, writer);

                    string str = writer.ToString();

                }

                sw.Stop();

                Console.Write(sw.ElapsedMilliseconds + "ms | ");

            }

            var w = new Jayrock.Json.JsonTextWriter();

            Jayrock.Json.Conversion.JsonConvert.Export(obj, w);

            Console.WriteLine();

            Console.WriteLine("结果:" + w.ToString());

            Console.WriteLine("==============================================");

        }

        static void TestNewtonsoftJson(int count, object obj)

        {

            Stopwatch sw = new Stopwatch();

            Console.WriteLine();

            Console.WriteLine("Newtonsoft.Json 每次" + count + " 共10次");

            for (int j = ; j < ; j++)

            {

                sw.Restart();

                for (int i = ; i < count; i++)

                {

                    Newtonsoft.Json.JsonConvert.SerializeObject(obj);

                }

                sw.Stop();

                Console.Write(sw.ElapsedMilliseconds + "ms | ");

            }

            var w = Newtonsoft.Json.JsonConvert.SerializeObject(obj);

            Console.WriteLine();

            Console.WriteLine("结果:" + w.ToString());

            Console.WriteLine("==============================================");

        }

        static void TestJavaScriptSerializer(int count, object obj)

        {

            Stopwatch sw = new Stopwatch();

            Console.WriteLine();

            Console.WriteLine("JavaScriptSerializer 每次" + count + " 共10次");

            for (int j = ; j < ; j++)

            {

                sw.Restart();

                for (int i = ; i < count; i++)

                {

                    new System.Web.Script.Serialization.JavaScriptSerializer().Serialize(obj);

                }

                sw.Stop();

                Console.Write(sw.ElapsedMilliseconds + "ms | ");

            }

            var w = new System.Web.Script.Serialization.JavaScriptSerializer().Serialize(obj);

            Console.WriteLine();

            Console.WriteLine("结果:" + w.ToString());

            Console.WriteLine("==============================================");

        }

        //测试JsonBuilder性能

        static void JsonBuilder(int count, object obj)

        {

            Stopwatch sw = new Stopwatch();

            Console.WriteLine();

            Console.WriteLine("QuickJsonBuilder 每次" + count + " 共10次");

            for (int j = ; j < ; j++)

            {

                sw.Reset();

                sw.Start();

                for (int i = ; i < count; i++)

                {

                    JsonBuilder jb = new JsonBuilder();

                    jb.ToJsonString(obj);

                }

                sw.Stop();

                Console.Write(sw.ElapsedMilliseconds + "ms | ");

            }

            Console.WriteLine();

            Console.WriteLine("结果:" + new JsonBuilder().ToJsonString(obj));

            Console.WriteLine("==============================================");

        }

    }

}

测试代码

　　测试方案1：微软自带的的 JavaScriptSerializer

引用组件：System.Web.Extensions（微软自带了，引用下就好）

string str = new System.Web.Script.Serialization.JavaScriptSerializer().Serialize(User.TestUser());

//{"Self":null,"UID":"6f50b429-5c13-4875-a29a-e4bd8d7b2772","Name":"blqw","Birthday":"\/Date(530964000000)\/","Sex":0,"IsDeleted":false,"LoginHistory":["\/Date(1377129600000)\/","\/Date(1377137410000)\/","\/Date(1377146036000)\/","\/Date(1377163518000)\/","\/Date(1377184019000)\/"],"Info":{"Address":"广东省广州市","Phone":{"手机":"18688888888","电话":"82580000","短号":"10086","QQ":"21979018"},"ZipCode":510000},"Double":-Infinity}

　　测试方案2：Newtonsoft.Json

引用组件：Newtonsoft.Json.Net35.dll

string str = Newtonsoft.Json.JsonConvert.SerializeObject(User.TestUser());

//{"Self":null,"UID":"6f50b429-5c13-4875-a29a-e4bd8d7b2772","Name":"blqw","Birthday":"\/Date(530964000000+0800)\/","Sex":0,"IsDeleted":false,"LoginHistory":["\/Date(1377129600000+0800)\/","\/Date(1377137410000+0800)\/","\/Date(1377146036000+0800)\/","\/Date(1377163518000+0800)\/","\/Date(1377184019000+0800)\/"],"Info":{"Address":"广东省广州市","Phone":{"手机":"18688888888","电话":"82580000","短号":"10086","QQ":"21979018"},"ZipCode":510000},"Double":-Infinity}

　　测试方案3：Jayrock.Json

引用组件：Jayrock.Json.dll

JsonTextWriter jtw = new Jayrock.Json.JsonTextWriter();

Jayrock.Json.Conversion.JsonConvert.Export(User.TestUser(), jtw);

string str = jtw.ToString();

//{"uID":"6f50b429-5c13-4875-a29a-e4bd8d7b2772","name":"blqw","birthday":"1986-10-29T18:00:00.0000000+08:00","sex":"Male","isDeleted":false,"loginHistory":["2013-08-22T08:00:00.0000000+08:00","2013-08-22T10:10:10.0000000+08:00","2013-08-22T12:33:56.0000000+08:00","2013-08-22T17:25:18.0000000+08:00","2013-08-22T23:06:59.0000000+08:00"],"info":{"address":"广东省广州市","phone":{"手机":"18688888888","电话":"82580000","短号":"10086","QQ":"21979018"},"zipCode":510000},"double":-Infinity}

　　测试方案4：fastJSON.NET

引用组件：fastJSON.dll

JSONParameters p = new JSONParameters();

p.EnableAnonymousTypes

    = p.IgnoreCaseOnDeserialize

    = p.ShowReadOnlyProperties

    = p.UseEscapedUnicode

    = p.UseExtensions

    = p.UseFastGuid

    = p.UseOptimizedDatasetSchema

    = p.UseUTCDateTime

    = p.UsingGlobalTypes

    = false;//所有参数为false,执行速度最快

string str = fastJSON.JSON.Instance.ToJSON(User.TestUser(), p);

//{"Self":null,"UID":"6f50b429-5c13-4875-a29a-e4bd8d7b2772","Name":"blqw","Birthday":"1986-10-29 18:00:00","Sex":"Male","IsDeleted":false,"LoginHistory":["2013-08-22 08:00:00","2013-08-22 10:10:10","2013-08-22 12:33:56","2013-08-22 17:25:18","2013-08-22 23:06:59"],"Info":{"Address":"广东省广州市","Phone":{"手机":"18688888888","电话":"82580000","短号":"10086","QQ":"21979018"},"ZipCode":510000},"Double":-Infinity}

　　测试方案5,6：QuickJsonBuilder,JsonBuilder

ps:以上几种类型都不支持循环引用,如果有,直接抛出异常

说明：QuickJsonBuilder就是我上篇中介绍的JsonBuilder的终极形态

QuickJsonBuilder jb = new QuickJsonBuilder();

jb.ToJson(User.TestUser());
//{"Self":null,"UID":"6f50b429-5c13-4875-a29a-e4bd8d7b2772","Name":"blqw","Birthday":"1986-10-29 18:00:00","Sex":"Male","IsDeleted":false,"LoginHistory":["2013-08-22 08:00:00","2013-08-22 10:10:10","2013-08-22 12:33:56","2013-08-22 17:25:18","2013-08-22 23:06:59"],"Info":{"Address":"广东省广州市","Phone":{"手机":"18688888888","电话":"82580000","短号":"10086","QQ":"21979018"},"ZipCode":510000},"Double":-Infinity}

ps:当Self指向自己本身的时候,将返回 "Self":undefined 用以区分空对象

　　测试方案7：ServiceStack.Text

引用组件：ServiceStack.Text.dll 抱歉我只找到4.0的

这个是后来补上的,测试代码中没有这个...

User.TestUser().ToJson();

//{"UID":"48d4624ad0c8475094d00fc769c7129f","Name":"blqw","Birthday":"\/Date(530964000000+0800)\/","Sex":"Male","IsDeleted":false,"LoginHistory":["\/Date(1377129600000+0800)\/","\/Date(1377137410000+0800)\/","\/Date(1377146036000+0800)\/","\/Date(1377163518000+0800)\/","\/Date(1377184019000+0800)\/"],"Info":{"Address":"广东省广州市","Phone":{"手机":"18688888888","电话":"82580000","短号":"10086","QQ":"21979018"},"ZipCode":510000},"Double":-Infinity}

ps:依然不支持循环引用,抛出堆栈异常

　　测试结果(单位 "毫秒")

 
循环次数 测试组件 第一轮 第二轮 第三轮 第四轮 第五轮
1次  JavaScriptSerializer    0  0  0  0
 Newtonsoft.Json    0  0  0  0
 Jayrock.Json  85  0  0  0  0
 fastJSON.NET  47  0  0  0  0
 QuickJsonBuilder  37  0  0  0  0
 JsonBuilder  22  0  0  0  0
ServiceStack.Text  138  0  0  0  0
100次  JavaScriptSerializer    7  7  8  7
 Newtonsoft.Json    2  3  2  2
 Jayrock.Json  77  8  9  9  8
 fastJSON.NET  41  1  1  1  1
 QuickJsonBuilder  36  1  1  1  1
 JsonBuilder  26  3  4  3  3
ServiceStack.Text  139  2  2  2  2
10000次  JavaScriptSerializer  765  751  752  751  749
 Newtonsoft.Json  437  253  251  248  243
 Jayrock.Json  967  905  965  913  952
 fastJSON.NET  239  181  200  167  166
 QuickJsonBuilder  171  128  132  136  129
 JsonBuilder  418  386  388  391  360
ServiceStack.Text  367  216  224  238  223

测试结果仅供参考

　　总结

可以看出基本所有组件在第一轮用时都是最长的,应该是在处理一些初始化和缓存的工作。

所以呢，我特别给出了1次的循环结果，

JavaScriptSerializer 可以看出在100次以内的时候微软的还是有一些优势的，随着次数增加性能就渐渐跟不上了

Newtonsoft.Json一直表现平平啊，没有特别突出就地方，就跟JsonBuilder比性能也没有好到那里去

Jayrock.Json 是昨天一位博友告诉我的，据说是淘宝sdk在用的，性能只能说，好差。。。

fastJSON.NET 确实是所有组件中最快的，QuickJsonBuilder也从中借鉴了一些处理方式

ServiceStack.Text 中规中矩吧比Newtonsoft.Json好一点点.就是我只找到4.0的拓展方法,不知道2.0下有没有相应的组件

好吧 我自己的组件我就不做评价了

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