Json 序列化字典的问题Enum, Int32

使用Json序列化字典的问题

csharp
using System;
using System.Collections.Generic;
using Newtonsoft.Json;
public enum Fruit
{
    Apple,
    Banana,
    Orange
}
class Program
{
    static void Main(string[] args)
    {
        Dictionary fruitInventory = new Dictionary
        {
            { Fruit.Apple, 10 },
            { Fruit.Banana, 5 },
            { Fruit.Orange, 7 }
        };
        string json = JsonConvert.SerializeObject(fruitInventory);
        Console.WriteLine("Serialized Json: " + json);
        Dictionary deserializedFruitInventory = JsonConvert.DeserializeObject>(json);
        foreach (var item in deserializedFruitInventory)
        {
            Console.WriteLine("Fruit: " + item.Key + ", Quantity: " + item.Value);
        }
    }
}

csharp
using System;
using System.Collections.Generic;
using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
public enum Fruit
{
    Apple,
    Banana,
    Orange
}
public class FruitConverter : JsonConverter
{
    public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
    {
        writer.WriteValue(value.ToString());
    }
    public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
    {
        if (reader.TokenType == JsonToken.String)
        {
            string enumValue = (string)reader.Value;
            return Enum.Parse(typeof(Fruit), enumValue);
        }
        throw new JsonSerializationException("Invalid token type for converting to Fruit");
    }
    public override bool CanConvert(Type objectType)
    {
        return objectType == typeof(Fruit);
    }
}
class Program
{
    static void Main(string[] args)
    {
        Dictionary fruitInventory = new Dictionary
        {
            { Fruit.Apple, 10 },
            { Fruit.Banana, 5 },
            { Fruit.Orange, 7 }
        };
        string json = JsonConvert.SerializeObject(fruitInventory, new FruitConverter());
        Console.WriteLine("Serialized Json: " + json);
        Dictionary deserializedFruitInventory = JsonConvert.DeserializeObject>(json, new FruitConverter());
        foreach (var item in deserializedFruitInventory)
        {
            Console.WriteLine("Fruit: " + item.Key + ", Quantity: " + item.Value);
        }
    }
}