c# - 将没有成员名称的 JSON 数组反序列化为 C# 对象

Question

我正在搜索一种将数组(没有成员名称)反序列化为 C# 对象的方法。提供了工作和预期的示例，我看过很多类似的帖子，但不完全是我正在寻找的内容，因此为什么要寻求一些帮助。

我是否需要采取实现自定义反序列化的方法，或者我是否错过了已经存在的东西？

    // Deserialize Works This Way
    public class Order
    {
        public string orderNo { get; set; }
        public string customerNo { get; set; }
        public List<List<double>> items { get; set; }
    }

    // Expected Covert Type.
    public class OrderExpected
    {
        public string orderNo { get; set; }
        public string customerNo { get; set; }
        public List<OrderItem> items { get; set; }
    }

    public class OrderItem
    {
        public int itemId { get; set; }
        public decimal price { get; set; }
        public decimal quantity { get; set; }
    }

我尝试过的代码以及我想要的工作:

     var json = "{\"orderNo\":\"AO1234\",\"customerNo\":\"C0129999\",\"items\":[[255, 1.65, 20951.60],[266, 1.80, 20000.00],[277, 1.90,0.50]]}";
     // Works OK, but ins't what I am after
     var order = JsonConvert.DeserializeObject<Order>(json);

     // I'd like to get some help to get this approch working.
     var orderexpected = JsonConvert.DeserializeObject<OrderExpected>(json);

有关项目数组的更多信息:items 数组将由固定长度为 3 的数组组成，值分别代表 itemId、价格和数量。

附注我正在使用一个不受我控制的 API。

Answer 1

这可以帮助你..

public class OrderExpected
{
    public string orderNo { get; set; }
    public string customerNo { get; set; }
    public List<OrderItem> items { get; set; }
}

[JsonConverter(typeof(OrderItemConverter))]
public class OrderItem
{
    public int itemId { get; set; }
    public decimal price { get; set; }
    public decimal quantity { get; set; }
}

public class OrderItemConverter : JsonConverter
{

    public override bool CanConvert(Type objectType)
    {
        return objectType.Name.Equals("OrderItem");
    }

    public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
    {

        JArray array =  JArray.Load(reader);
        return new OrderItem { 
            itemId = array[0].ToObject<int>(),
            price = array[1].ToObject<decimal>(),
            quantity = array[2].ToObject<decimal>()
        }; 
    }

    public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
    {
        var orderItem = value as OrderItem;
        JArray arra = new JArray();
        arra.Add(orderItem.itemId);
        arra.Add(orderItem.price);
        arra.Add(orderItem.quantity);
        arra.WriteTo(writer);
    }
}

使用..

        string jsonString = "{\"orderNo\":\"AO1234\",\"customerNo\":\"C0129999\",\"items\":[[255, 1.65, 20951.60],[266, 1.80, 20000.00],[277, 1.90,0.50]]}";
        var objectResult = JsonConvert.DeserializeObject<OrderExpected>(jsonString);
        var serializationResult = JsonConvert.SerializeObject(objectResult);
        Console.WriteLine(serializationResult);
        // output : {"orderNo":"AO1234","customerNo":"C0129999","items":[[255,1.65,20951.6],[266,1.8,20000.0],[277,1.9,0.5]]}