我想创建一个自定义的 ValueProvider 用于 Json.NET,它将跳过序列化所有对象,只返回类型为 Guid 的属性,表示其主键(作为引用)。
例如:
例如:
jsonData: {
myObject: {
id: "23e23-2gg5-6y666556-y6yg33",
property2: ""
}
}
Should become:
jsonData: {
myObjectId: "23e23-2gg5-6y666556-y6yg33"
}
这是我迄今为止编写的代码。我非常接近让它工作,但在我的 CustomValueProvider
中似乎无法获取对象值。我该如何做到这一点?
private class CustomValueProvider : IValueProvider
{
private readonly MemberInfo _member;
public CustomValueProvider(MemberInfo member)
{
_member = member;
}
public void SetValue(object target, object value)
{
throw new NotImplementedException();
}
public object GetValue(object target)
{
return // WHAT HERE??
}
}
private class CustomResolver : CamelCasePropertyNamesContractResolver
{
protected override JsonProperty CreateProperty(MemberInfo member, MemberSerialization memberSerialization)
{
var jsonProperty = base.CreateProperty(member, memberSerialization);
if (jsonProperty.PropertyType.IsClass && jsonProperty.PropertyType != typeof(string))
{
jsonProperty = new JsonProperty
{
PropertyName = member.Name.ToFirstCharLower() + "Id",
Readable = true,
ShouldSerialize = value => true,
PropertyType = typeof(Guid),
ValueProvider = new CustomValueProvider(member)
};
}
return jsonProperty;
}
}
private static readonly JsonSerializerSettings JsonSettings = new JsonSerializerSettings
{
ContractResolver = new CustomResolver(),
Formatting = Formatting.Indented
};