System.Text.Json.JsonSerializer.Serialize返回空的Json对象"{}". [英] System.Text.Json.JsonSerializer.Serialize returns empty Json object "{}"

问题描述

环境:Visual Studio 2019 16.3.8，.NET 3.0.100，.NET Core 3.0单元测试.

Environment: Visual Studio 2019 16.3.8, .NET 3.0.100, .NET Core 3.0 unit test.

下面对System.Text.Json.JsonSerializer.Serialize的所有3个调用都返回空对象:"{}"

All 3 calls below to System.Text.Json.JsonSerializer.Serialize return empty objects: "{}"

我一定做错了什么...但是我看不到吗?

I must be doing something wrong ... but I just don't see it?

public class MyObj
{
    public int myInt;
}

[TestMethod]
public void SerializeTest()
{
    var myObj = new MyObj() { myInt = 99 };
    var txt1 = System.Text.Json.JsonSerializer.Serialize(myObj);
    var txt2 = System.Text.Json.JsonSerializer.Serialize(myObj, typeof(MyObj));
    var txt3 = System.Text.Json.JsonSerializer.Serialize<MyObj>(myObj);
}

推荐答案

我非常确定序列化程序不适用于字段. 因此请改用属性.

im pretty sure the serializer doesn't work with fields. so use a property instead.

public int MyInt { get; set; }

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