javascript - 如何将此 json 转换为 C# 对象

Question

我从第三方收到这个 JSON，因此无法控制它，

{
    code: 200,
    message: success,
    data: {
        categories: {
            0: {
                prop1: 100,
                prop2: blah
            },
            1: {
                prop1: 100,
                prop2: blah
            }
                    // etc.. etc.. it may return around 100 or more categories or less
        }
    }
}

现在我正在尝试将其转换为 C# 对象，

[DataContract]
public class Category
{
    [DataMember] public string prop1 { get; set; }
    [DataMember] public string prop2 { get; set; }
}

[DataContract]
public class Data
{
    [DataMember]
    public List<Category> categories { get; set; }
}

[DataContract]
public class RootObject
{
    [DataMember]
    public int code { get; set; }
    [DataMember]
    public string message { get; set; }
    [DataMember]
    public Data data { get; set; }
}

和转换它的代码，

   var response = LoadPageAsync(url).Result;
   var serializer = new JavaScriptSerializer();
   var rootObject = serializer.Deserialize<RootObject>(response);

问题是我得到的类别计数为零，即使 JSON 本身有很多。

Answer 1

您需要将类别列表更改为字典。测试了以下代码，我根据需要实现了反序列化。还值得注意的是，如果字符串周围没有引号，您的 json 实际上是无效。我也使用了 JSON.Net，但这应该无关紧要。

[DataContract]
public class Category
{
    [DataMember] public string prop1 { get; set; }
    [DataMember] public string prop2 { get; set; }
}

[DataContract]
public class Data
{
    [DataMember]
    public Dictionary<int, Category> categories { get; set; }
}

[DataContract]
public class RootObject
{
    [DataMember]
    public int code { get; set; }
    [DataMember]
    public string message { get; set; }
    [DataMember]
    public Data data { get; set; }
}

static void Main(string[] args)
{
    var root = new RootObject()
    {
        code = 1,
        message = "test",
        data = new Data()
        {
            categories = new Dictionary<int, Category>()
            {
                { 0, new Category()
                    {
                        prop1 = "cat1prop1",
                        prop2 = "cat1prop2"
                    }
                },
                { 1,  new Category()
                    {
                        prop1 = "cat2prop1",
                        prop2 = "cat2prop2"
                    }
                }
            }
        }
    };
    var testJson = "{code: 200,message: \"success\",data: {categories: {0: {prop1: 100,prop2: \"blah\"},1: {prop1: 100,prop2: \"blah\"}}}}";
    var json = JsonConvert.SerializeObject(root);
    var testConvert = JsonConvert.DeserializeObject<RootObject>(testJson);
}