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@@ -10,6 +10,22 @@ namespace Masuit.Tools.Systems;
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/// </summary>
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public class CompositeContractResolver : FallbackJsonPropertyResolver
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{
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+ protected override IValueProvider CreateMemberValueProvider(MemberInfo member)
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+ {
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+ IValueProvider provider = base.CreateMemberValueProvider(member);
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+ if (member.MemberType == MemberTypes.Property)
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+ {
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+ Type propType = ((PropertyInfo)member).PropertyType;
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+ if (propType.IsGenericType &&
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+ propType.GetGenericTypeDefinition() == typeof(List<>))
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+ {
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+ return new EmptyListValueProvider(provider, propType);
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+ }
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+ }
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+
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+ return provider;
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+ }
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+
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protected override JsonProperty CreateProperty(MemberInfo member, MemberSerialization memberSerialization)
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{
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var property = base.CreateProperty(member, memberSerialization);
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@@ -26,3 +42,18 @@ public class CompositeContractResolver : FallbackJsonPropertyResolver
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return property;
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}
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}
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+
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+internal class EmptyListValueProvider(IValueProvider innerProvider, Type listType) : IValueProvider
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+{
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+ private readonly object _defaultValue = Activator.CreateInstance(listType);
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+
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+ public void SetValue(object target, object value)
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+ {
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+ innerProvider.SetValue(target, value ?? _defaultValue);
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+ }
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+
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+ public object GetValue(object target)
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+ {
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+ return innerProvider.GetValue(target) ?? _defaultValue;
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+ }
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+}
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懒得勤快