c# – 使用ServiceStack.Text序列化接口类型列表

你可能不需要做太多:)

The JSON and JSV Text serializers now support serializing and
deserializing DTOs with Interface / Abstract or object types. Amongst
other things,this allows you to have an IInterface property which
when serialized will include its concrete type information in a __type
property field (similar to other JSON serializers) which when
serialized populates an instance of that concrete type (provided it
exists).

[…]

Note: This feature is automatically added to all
Abstract/Interface/Object types,i.e. you don’t need to include any
[KnownType] attributes to take advantage of it.

不多：

public interface IAsset
{
    string Bling { get; set; }
}

public class AAsset : IAsset
{
    public string Bling { get; set; }
    public override string ToString()
    {
        return "A" + Bling;
    }
}

public class BAsset : IAsset
{
    public string Bling { get; set; }
    public override string ToString()
    {
        return "B" + Bling;
    }
}

public class AssetBag
{
    [JsonProperty(TypeNameHandling = TypeNameHandling.None)]
    public List<IAsset> Assets { get; set; } 
}

class Program
{


    static void Main(string[] args)
    {
        try
        {
            var bag = new AssetBag
                {
                    Assets = new List<IAsset> {new AAsset {Bling = "Oho"},new BAsset() {Bling = "Aha"}}
                };
            string json = JsonConvert.SerializeObject(bag,new JsonSerializerSettings()
            {
                TypeNameHandling = TypeNameHandling.Auto
            });
            var anotherBag = JsonConvert.DeserializeObject<AssetBag>(json,new JsonSerializerSettings()
            {
                TypeNameHandling = TypeNameHandling.Auto
            });