• .net core Json字符串的序列化和反序列化通用类源码,Newtonsoft和DataContractJsonSerializer性能对比


    我们在开发中Json传输数据日益普遍,有很多关于Json字符串的序列化和反序列化的文章大多都告诉你怎么用,但是却不会告诉你用什么更高效。因为有太多选择,人们往往会陷入选择难题。

    相比.NET Framework有三种选择而.net core下已经没有JavaScriptSerializer,但是大家还有两种选择分别如下:

    DataContractJsonSerializer

    Newtonsoft.Json

    因为这两个都有人用,所以我做了完整的对象转换demo进行了测试,这里我不仅和大家讲如何使用,并且还把我自己写的一个转换参与测试并告诉各位怎么测试的。为了节约开发时间,我们把解决方案收入到一个个demo中,方便以后即拿即用。而且这些demo有博客文档支持,帮助任何人非常容易上手开发跨平台的.net core。随着时间的推移,我们的demo库会日益强大请及时收藏GitHub

    在讲序列化及反序列化之前先把我们的测试结果分享给大家,十万数据测速比较告诉我们Newtonsoft更高效。

    一、首先在Common公用项目中引用Newtonsoft的类库

    Install-Package Newtonsoft.Json -Version 12.0.3-beta2

    二、在Common公用项目中添加CommonHelper(这里大家想要的转换,根据需要自己拿吧)

    #region model<->json(对象和json互转)
            #region DataContractJsonSerializer
            public static string SerializeDataContractJson<T>(T obj)
            {
                DataContractJsonSerializer json = new DataContractJsonSerializer(obj.GetType());
                using (MemoryStream stream = new MemoryStream())
                {
                    json.WriteObject(stream, obj);
                    string szJson = Encoding.UTF8.GetString(stream.ToArray());
                    return szJson;
                }
            }
            public static T DeserializeDataContractJson<T>(string szJson)
            {
                T obj = Activator.CreateInstance<T>();
                using (MemoryStream ms = new MemoryStream(Encoding.UTF8.GetBytes(szJson)))
                {
                    DataContractJsonSerializer serializer = new DataContractJsonSerializer(obj.GetType());
                    return (T)serializer.ReadObject(ms);
                }
            }
            #endregion
    
            #region Newtonsoft
            static public string SerializeJSON<T>(T data)
            {
                return Newtonsoft.Json.JsonConvert.SerializeObject(data);
            }
            static public T DeserializeJSON<T>(string json)
            {
                return Newtonsoft.Json.JsonConvert.DeserializeObject<T>(json);
            }
            #endregion
            #endregion
    
            #region datatable<->json(datatable和json互转)
            public static string SerializeDataTableToJSON(DataTable dt)
            {
                return Newtonsoft.Json.JsonConvert.SerializeObject(dt);
            }
            public static DataTable SerializeJSONToDataTable(string json)
            {
                return Newtonsoft.Json.JsonConvert.DeserializeObject<DataTable>(json);
            }
            #region 自己写datatable转json用于测试速度对比下
            public static string MyDataTableToJson(DataTable dt)
            {
                StringBuilder JsonString = new StringBuilder();
                if (dt != null && dt.Rows.Count > 0)
                {
                    JsonString.Append("{ ");
                    JsonString.Append(""TableInfo":[ ");
                    for (int i = 0; i < dt.Rows.Count; i++)
                    {
                        JsonString.Append("{ ");
                        for (int j = 0; j < dt.Columns.Count; j++)
                        {
                            if (j < dt.Columns.Count - 1)
                            {
                                JsonString.Append(""" + dt.Columns[j].ColumnName.ToString() + "":" + """ + dt.Rows[i][j].ToString() + "",");
                            }
                            else if (j == dt.Columns.Count - 1)
                            {
                                JsonString.Append(""" + dt.Columns[j].ColumnName.ToString() + "":" + """ + dt.Rows[i][j].ToString() + """);
                            }
                        }
                        if (i == dt.Rows.Count - 1)
                        {
                            JsonString.Append("} ");
                        }
                        else
                        {
                            JsonString.Append("}, ");
                        }
                    }
                    JsonString.Append("]}");
                    return JsonString.ToString();
                }
                else
                {
                    return null;
                }
            }
            #endregion
            #endregion

     三、控制器添加Json处理相应方法(我这里整合所有到了HomeController下的Json中了,你们不需要计时,用的时候只需要调用CommonHelper的相关方法即可)

    public IActionResult Json()
            {
                List<Article> articleList = new List<Article>();
                for (int x = 0; x < 100000; x++)
                {
                    Article article = new Article();
                    article.Context = "内容:" + x;
                    article.Id = x + 1;
                    article.CreateTime = DateTime.Now;
                    article.Title = "标题:" + x;
                    articleList.Add(article);
                }
    
                #region 单个对象与json互转
                Article articletest = new Article();
                articletest.Context = "内容";
                articletest.Id = 1;
                articletest.CreateTime = DateTime.Now;
                articletest.Title = "标题";
                string json11 = CommonHelper.SerializeDataContractJson(articletest);
                string json12 = CommonHelper.SerializeJSON(articletest);
                Article article1 = CommonHelper.DeserializeDataContractJson<Article>(json11);
                Article article2 = CommonHelper.DeserializeJSON<Article>(json12);
                #endregion
    
                #region 记录10万对象集合与json互转用时比较
                //SerializeDataContractJson 10万对象转json
                System.Diagnostics.Stopwatch watch1 = new System.Diagnostics.Stopwatch();
                watch1.Start();  //开始监视代码运行时间
                string json1 = CommonHelper.SerializeDataContractJson(articleList); 
                TimeSpan timespan1 = watch1.Elapsed;  //获取当前实例测量得出的总时间
                watch1.Stop();  //停止监视   
                ViewBag.t1= timespan1.TotalSeconds;
    
                //Newtonsoft 10万对象转json
                System.Diagnostics.Stopwatch watch2 = new System.Diagnostics.Stopwatch();
                watch2.Start();  
                string json2 = CommonHelper.SerializeJSON(articleList);
                TimeSpan timespan2 = watch2.Elapsed;  
                watch2.Stop();
                ViewBag.t2 = timespan2.TotalSeconds;
    
                //SerializeDataContractJson 10万json转对象
                System.Diagnostics.Stopwatch watch3 = new System.Diagnostics.Stopwatch();
                watch3.Start();  
                List<Article> list1 = CommonHelper.DeserializeDataContractJson<List<Article>>(json1);
                TimeSpan timespan3 = watch3.Elapsed; 
                watch3.Stop();   
                ViewBag.t3 = timespan3.TotalSeconds;
    
                //Newtonsoft 10万json转对象
                System.Diagnostics.Stopwatch watch4 = new System.Diagnostics.Stopwatch();
                watch4.Start();  
                List<Article> list2 = CommonHelper.DeserializeJSON<List<Article>>(json2);
                TimeSpan timespan4 = watch4.Elapsed;  
                watch4.Stop();   
                ViewBag.t4 = timespan4.TotalSeconds;
    
                #endregion
    
                #region 记录10万datatable与json互转用时比较
                DataTable tblDatas = new DataTable("Datas");
                DataColumn dc = null;
                dc = tblDatas.Columns.Add("ID", Type.GetType("System.Int32"));
                dc.AutoIncrement = true;//自动增加
                dc.AutoIncrementSeed = 1;//起始为1
                dc.AutoIncrementStep = 1;//步长为1
                dc.AllowDBNull = false;//
    
                dc = tblDatas.Columns.Add("Product", Type.GetType("System.String"));
                dc = tblDatas.Columns.Add("Version", Type.GetType("System.String"));
                dc = tblDatas.Columns.Add("Description", Type.GetType("System.String"));
                for (int x = 0; x < 100000; x++)
                {
                    DataRow newRow = tblDatas.NewRow();
                    newRow["Product"] = "西游记" + x;
                    newRow["Version"] = "" + x;
                    newRow["Description"] = x;
                    tblDatas.Rows.Add(newRow);
                }
    
                //Newtonsoft 10万DataTable转json
                System.Diagnostics.Stopwatch watch5 = new System.Diagnostics.Stopwatch();
                watch5.Start();  
                string json5 = CommonHelper.SerializeDataTableToJSON(tblDatas);
                TimeSpan timespan5 = watch5.Elapsed;  
                watch5.Stop(); 
                ViewBag.t5 = timespan5.TotalSeconds;
    
                //Newtonsoft 10万json转DataTable
                System.Diagnostics.Stopwatch watch6 = new System.Diagnostics.Stopwatch();
                watch6.Start();  
                DataTable dataTable = CommonHelper.SerializeJSONToDataTable(json5);
                TimeSpan timespan6 = watch6.Elapsed; 
                watch6.Stop();  
                ViewBag.t6 = timespan6.TotalSeconds;
    
                //自己写的  10万DataTable转json
                System.Diagnostics.Stopwatch watch7 = new System.Diagnostics.Stopwatch();
                watch7.Start();  
                string json7 = CommonHelper.MyDataTableToJson(tblDatas);
                TimeSpan timespan7 = watch7.Elapsed; 
                watch7.Stop();    
                ViewBag.t7 = timespan7.TotalSeconds;
                #endregion
    
    
                return View();
            }

    四、前端设计(这里也没啥设计了,只是做了展示,代码我还是贴出来吧)

        <div style="80%;margin:auto;text-align:center;">
            <div class="cover" style="border: 1px solid #D6D6D6;padding: 5px;">
                <h2>10万对象与json互转</h2>
                <span>SerializeDataContractJson:对象集合转json(@ViewBag.t1 秒),json转对象集合(@ViewBag.t3 秒)</span><br />
                <span>Newtonsoft:对象集合转json(@ViewBag.t2 秒),json转对象集合(@ViewBag.t4 秒)</span>
            </div>
            <div class="cover" style="border: 1px solid #D6D6D6;padding: 5px;">
                <h2>10万datatable与json互转</h2>
                <span>Newtonsoft:datatable转json(@ViewBag.t5 秒),json转datatable(@ViewBag.t6 秒)</span><br />
                <span>自己码:datatable转json(@ViewBag.t7 秒)</span>
            </div>
        </div>

    五、那么看下效果吧。

    开源地址 动动小手,点个推荐吧!

    注意:我们机遇屋该项目将长期为大家提供asp.net core各种好用demo,旨在帮助.net开发者提升竞争力和开发速度,建议尽早收藏该模板集合项目

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  • 原文地址:https://www.cnblogs.com/jiyuwu/p/11857109.html
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