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:
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="width: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。