c# - 序列化循环引用对象的最佳方法是什么？

最好是文本格式。最好的是json，并带有一些指向指针的标准。二进制也很好。请记住，在过去，肥皂是为此的标准。你有什么建议？

最佳答案

binary没问题:

[Serializable]
public class CircularTest
{
    public CircularTest[] Children { get; set; }
}

class Program
{
    static void Main()
    {
        var circularTest = new CircularTest();
        circularTest.Children = new[] { circularTest };
        var formatter = new BinaryFormatter();
        using (var stream = File.Create("serialized.bin"))
        {
            formatter.Serialize(stream, circularTest);
        }

        using (var stream = File.OpenRead("serialized.bin"))
        {
            circularTest = (CircularTest)formatter.Deserialize(stream);
        }
    }
}

DataContractSerializer也可以处理循环引用，您只需要使用特殊的构造函数并指出这一点，它将吐出XML:

public class CircularTest
{
    public CircularTest[] Children { get; set; }
}

class Program
{
    static void Main()
    {
        var circularTest = new CircularTest();
        circularTest.Children = new[] { circularTest };
        var serializer = new DataContractSerializer(
            circularTest.GetType(),
            null,
            100,
            false,
            true, // <!-- that's the important bit and indicates circular references
            null
        );
        serializer.WriteObject(Console.OpenStandardOutput(), circularTest);
    }
}

并且最新版本的Json.NET以及JSON也支持循环引用:

public class CircularTest
{
    public CircularTest[] Children { get; set; }
}

class Program
{
    static void Main()
    {
        var circularTest = new CircularTest();
        circularTest.Children = new[] { circularTest };
        var settings = new JsonSerializerSettings
        {
            PreserveReferencesHandling = PreserveReferencesHandling.Objects
        };
        var json = JsonConvert.SerializeObject(circularTest, Formatting.Indented, settings);
        Console.WriteLine(json);
    }
}

产生:

{
  "$id": "1",
  "Children": [
    {
      "$ref": "1"
    }
  ]
}

我想这就是你要问的。

关于c# - 序列化循环引用对象的最佳方法是什么？，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/7545005/