C# Newtonsoft.JSON serialize/deserialize 对象数组

Question

我不确定如何处理 serializing/deserializing 使用 Newtonsoft.JSON 实现接口的对象数组。这是一个基本示例：

public interface IAnimal {
  public int NumLegs { get; set; }
  //etc..
}

public class Cat : IAnimal {...}
public class Dog : IAnimal {...}
public class Rabbit : IAnimal {...}

public IAnimal[] Animals = new IAnimal[3] {
  new Cat(),
  new Dog(),
  new Rabbit()
}

我将如何处理 serializing/deserializing Animals 数组？

Answer 1

试试这个

IAnimal[] animals = new IAnimal[] {
                    new Cat{CatName="Tom"},
                    new Dog{DogName="Scoopy"},
                    new Rabbit{RabitName="Honey"}
    };

    var jsonSerializerSettings = new JsonSerializerSettings()
    {
        TypeNameHandling = TypeNameHandling.All
    };
    var json = JsonConvert.SerializeObject(animals, jsonSerializerSettings);
    
List<IAnimal> animalsBack = ((JArray)JsonConvert.DeserializeObject(json))
.Select(o => (IAnimal)JsonConvert.DeserializeObject(o.ToString(), 
Type.GetType((string)o["$type"]))).ToList();

测试

json = JsonConvert.SerializeObject(animalsBack, Newtonsoft.Json.Formatting.Indented);

测试结果

[
  {
    "CatName": "Tom"
  },
  {
    "DogName": "Scoopy"
  },
  {
    "RabitName": "Honey"
  }
]

类

public class Cat : IAnimal { public string CatName { get; set; } }
public class Dog : IAnimal { public string DogName { get; set; } }
public class Rabbit : IAnimal { public string RabitName { get; set; } }

public interface IAnimal { }

C# Newtonsoft.JSON serialize/deserialize 对象数组

C# Newtonsoft.JSON serialize/deserialize array of objects

c#

json

json.net