我在 C# 中有一个包含 guid 的结构。我正在使用 DataContractJsonSerializer 来序列化包含该类实例的对象。当我直接使用 guid 时,它被序列化为纯字符串,但现在它被序列化为名称/值对。这是一个演示问题的 NUnit 测试和支持代码:
private static string ToJson<T>(T data)
{
DataContractJsonSerializer serializer = new DataContractJsonSerializer(typeof (T));
using (MemoryStream ms = new MemoryStream())
{
serializer.WriteObject(ms, data);
return Encoding.Default.GetString(ms.ToArray());
}
}
[Serializable]
private class ID
{
private Guid _value;
public static explicit operator ID(Guid id)
{
return new ID { _value = id };
}
public static explicit operator Guid(ID id)
{
return id._value;
}
}
[Test]
public void IDShouldSerializeLikeGuid()
{
Guid guid = Guid.NewGuid();
ID id = (ID) guid;
Assert.That(ToJson(id), Is.EqualTo(ToJson(guid)));
}
测试运行器输出:
NUnit.Framework.AssertionException: Expected string length 38 but was 49. Strings differ at index 0.
Expected: ""7511fb9f-3515-4e95-9a04-06580753527d""
But was: "{"_value":"7511fb9f-3515-4e95-9a04-06580753527d"}"
-----------^
如何将我的结构序列化为纯字符串并使我的测试通过?