JsonSerializer.Serialize优化，重用 JsonSerializerOptions 实例

文章参考自微软官方文档

地址：https://docs.microsoft.com/zh-cn/dotnet/standard/serialization/system-text-json-configure-options?pivots=dotnet-6-0

测试代码

 1 using System.Diagnostics;
 2 using System.Text.Json;
 3 
 4 static void Serialize(Forecast forecast, JsonSerializerOptions? options = null)
 5 {
 6     _ = JsonSerializer.Serialize(
 7         forecast,
 8         options ?? new JsonSerializerOptions() { WriteIndented = true });
 9 }
10 
11 Forecast forecast = new(DateTime.Now, 40, "Hot");
12 JsonSerializerOptions options = new() { WriteIndented = true };
13 int iterations = 1000;
14 
15 var watch = Stopwatch.StartNew();
16 for (var i = 0; i < iterations; i++)
17 {
18     Serialize(forecast, options);
19 }
20 
21 watch.Stop();
22 Console.WriteLine($"重复使用一个选项实例的运行时间：{watch.ElapsedMilliseconds}");
23 
24 watch = Stopwatch.StartNew();
25 for (int i = 0; i < iterations; i++)
26 {
27     Serialize(forecast);
28 }
29 
30 watch.Stop();
31 Console.WriteLine($"创建新选项实例所用的时间：{watch.ElapsedMilliseconds}");
32 
33 public record Forecast(DateTime Date, int TemperatureC, string Summary);

食用方法：NET6新建一个控制台项目 粘贴进去

结论

不要在每次使用时都创建新的 JsonSerializerOptions 实例。 对每个调用重复使用同一实例。

标签：JsonSerializer,Serialize,watch,JsonSerializerOptions,实例,forecast,options
来源： https://www.cnblogs.com/souphm/p/16416401.html