SparkClient/Model/Extension/DefaultValueContractResolver.cs

using System.Reflection;
using Newtonsoft.Json;
using Newtonsoft.Json.Serialization;

namespace BrilliantSightClient.Model.Extension;

public class DefaultValueContractResolver: DefaultContractResolver
{
    protected override JsonProperty CreateProperty(MemberInfo member, MemberSerialization memberSerialization)
    {
        JsonProperty property = base.CreateProperty(member, memberSerialization);
        
        if (property.PropertyType.IsValueType && 
            Nullable.GetUnderlyingType(property.PropertyType) == null) // 非可空类型
        {
            property.DefaultValue = Activator.CreateInstance(property.PropertyType);
            property.DefaultValueHandling = DefaultValueHandling.Populate;
        }

        return property;
    }
}