強制 System.Text.Json 在 CamelCase 中反序列化

Question

我正在嘗試使用 System.Text.Json 從 PascalCase 字符串中使用 camelCase 約定構建 JsonElement（或類似）。 有沒有辦法強制執行這種行為？

var jsonString = "{\"Property1\":\"s\", \"PropertyCamel\":{\"PropertyNested\":\"g\"}, \"PPP\":[{\"NestedList\":\"1\"}]}";
var deserialized = System.Text.Json.JsonSerializer.Deserialize<JsonElement>(jsonString,
    new JsonSerializerOptions
    {
        PropertyNamingPolicy = JsonNamingPolicy.CamelCase,
        DictionaryKeyPolicy = JsonNamingPolicy.CamelCase,
        PropertyNameCaseInsensitive = true
    });
var serialized = System.Text.Json.JsonSerializer.Serialize(
    deserialized,
    new JsonSerializerOptions
    {
        PropertyNamingPolicy = JsonNamingPolicy.CamelCase,
        DictionaryKeyPolicy = JsonNamingPolicy.CamelCase,
        PropertyNameCaseInsensitive = true
    });
// deserialized outputs property names in PascalCase

我也嘗試過反序列化-> 序列化-> 反序列化但沒有成功。

有沒有辦法這樣做？

Answer 1

參考這個答案，使用 Newtonsoft.Json

using Newtonsoft.Json;
using Newtonsoft.Json.Serialization;
using System.Dynamic;
    
var jsonString = "{\"Property1\":\"s\", \"PropertyCamel\":{\"PropertyNested\":\"g\"}, \"PPP\":[{\"NestedList\":\"1\"}]}";
                // won't work if I used json
                // var json = JsonConvert.DeserializeObject(jsonString);
                var interimObject = JsonConvert.DeserializeObject<ExpandoObject>(jsonString);
                var jsonSerializerSettings = new JsonSerializerSettings
                {
                    ContractResolver = new CamelCasePropertyNamesContractResolver()
                };
                var myJsonOutput = JsonConvert.SerializeObject(interimObject, jsonSerializerSettings);