[英]Deserialize Nested Dictionary in from Json C#
I have a class something like this我有一个 class 这样的东西
public class A{
public Guid userId { get; set; }
public Guid businessId { get; set; }
public Dictionary<int, long> rights { get; set; }
}
And I want to covert this json to this class我想把这个 json 转换成这个 class
{
"userId": "dc2af693-72e1-49a7-80aa-6416c6536bdf",
"businessId": "0110eea4-7a47-4a7c-95ea-10547ab49652",
"rights": "{\"19\":1,\"17\":15,\"18\":1,\"23\":1,\"1\":31,\"20\":3,\"3\":1,\"16\":0}",
}
But when Im trying to convert it with NewtonSoft.Json但是当我试图用 NewtonSoft.Json 转换它时
JsonConvert.DeserializeObject<A>(json);
I get the following error Cannot Cast System.string to System.Dictionary<int,long> What happens is that my rights get converted to a string something like this我收到以下错误Cannot Cast System.string to System.Dictionary<int,long>发生的事情是我的权利被转换为类似这样的字符串
"{"19":1, "17":15, "18":1, ..., "16":0}"
If I deserialize this string again it works as I desire is there better method to do this.如果我再次反序列化这个字符串,它会按照我的意愿工作,有没有更好的方法来做到这一点。
Since the rights
is in string format, you can add custom JsonConverter
which converts the string to dictionary由于rights
是字符串格式,您可以添加自定义JsonConverter
将字符串转换为字典
public class A
{
public Guid userId { get; set; }
public Guid businessId { get; set; }
[JsonConverter(typeof(RightsSerializer))]
public Dictionary<int, long> rights { get; set; }
}
Here is the RightsSerializer这是 RightsSerializer
public class RightsSerializer : JsonConverter
{
public override bool CanConvert(Type objectType)
{
return objectType == typeof(Dictionary<int, long>);
}
public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
{
if (reader.TokenType == JsonToken.Null) return null;
var jt = JToken.Load(reader);
return JsonConvert.DeserializeObject<Dictionary<int, long>>(jt.Value<String>());
}
public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
{
serializer.Serialize(writer, value);
}
}
And DeserializeObject和反序列化对象
var json = File.ReadAllText("json1.json");
var result = JsonConvert.DeserializeObject<A>(json);
changing the class to something like this will help.将 class 更改为这样的内容会有所帮助。 althoutgh you need to make code better than this.尽管您需要使代码比这更好。
public class A
{
public Guid userId { get; set; }
public Guid businessId { get; set; }
//[JsonConverter(typeof(Dictionary<int, long>))]
public string rights { get; set; }
public Dictionary<int, long> rightss => JsonConvert.DeserializeObject<Dictionary<int, long>>(rights);
}
You can't do it without deserializing twice, but you could hide it with a private subclass.如果不反序列化两次就无法做到这一点,但是您可以使用私有子类隐藏它。
public class A {
public Guid userId {get;set;}
public Guid businessId {get;set;}
public Dictionary<int, long> rights {get;set;}
private class B {
public Guid userId {get;set;}
public Guid businessId {get;set;}
public string rights {get;set;}
}
private B b;
public A (string json) {
var o = new JsonSerializerOptions();
o.AllowTrailingCommas = true;
b = JsonSerializer.Deserialize<B>(json, o);
userId = b.userId;
businessId = b.businessId;
rights = JsonSerializer.Deserialize<Dictionary<int, long>>(b.rights,o);
}
}
Usage with test in fiddle:小提琴测试的用法:
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.