序列时对DataContract的支持情况

| 列名 | 列名 | 列名 |
| --- | --- | --- |
| system.Text.Json | 不支持 |  |
| DataContractJsonSerializer | 支持 |  |
| Newtonsoft.Json | 支持 | 可开关 |

```java
internal class Program
{
    static void Main(string[] args)
    {
        var stopwatch = new Stopwatch();
        stopwatch.Start();
        // 使用 system.Text.Json
        Console.WriteLine("DataMember是不适用system.Text.Json的:");
        var testMode = new Person
        {
            Name = "test",
            Age = 18
        };
        var serialize = System.Text.Json.JsonSerializer.Serialize(testMode);
        Console.WriteLine($"{serialize},{stopwatch.ElapsedMilliseconds}ms");

// 使用DataContractJsonSerializer
        stopwatch.Restart();
        var serializer = new DataContractJsonSerializer(typeof(Person));
        using (var stream = new MemoryStream())
        {
            serializer.WriteObject(stream, testMode);
            string json = Encoding.UTF8.GetString(stream.ToArray());
            Console.WriteLine($"{json},{stopwatch.ElapsedMilliseconds}ms");
        }

// 使用Newtonsoft.Json
        stopwatch.Restart();
        var serializeObject = JsonConvert.SerializeObject(testMode);
        Console.WriteLine($"{serializeObject},{stopwatch.ElapsedMilliseconds}ms");
        // 第二次使用Newtonsoft.Json
        stopwatch.Restart();
        testMode.Name = "test2";
        var json3 = JsonConvert.SerializeObject(testMode);
  
        Console.WriteLine($"第二次{json3},{stopwatch.ElapsedMilliseconds}ms");

// 使用 Newtonsoft.Json 设置 DataContract
        var settings = new JsonSerializerSettings
        {
            ContractResolver = new DefaultContractResolver
            {
                IgnoreSerializableAttribute = false // 启用 DataContract 支持
            }
        };
        stopwatch.Restart();
        var json2 = JsonConvert.SerializeObject(testMode, settings);
        Console.WriteLine($"设置{json2},{stopwatch.ElapsedMilliseconds}ms");
        Console.ReadLine();
    }
}
[DataContract]
public class Person
{
    [DataMember(Name = "xingming")]
    public string? Name { get; set; }
    public int Age { get; set; }
}
```