Json可以通过任何方式仅指定要序列化的属性吗?还是基于绑定标志(例如仅声明的)序列化某些属性?
Does Json have any way to specify only the properties you want to be serialized? or alternatively serialize certain properties based on binding flags like Declared Only?
现在我正在使用JObject.FromObject(MainObj.SubObj);来获取SubObj的所有属性,SubObj是遵循ISubObject接口的类的实例:
Right now I am using JObject.FromObject(MainObj.SubObj); to get all properties of SubObj which is an instance of a class that obeys the ISubObject interface:
public interface ISubObject { } public class ParentSubObject : ISubObject { public string A { get; set; } } public class SubObjectWithOnlyDeclared : ParentSubObject { [JsonInclude] // This is fake, but what I am wishing existed public string B { get; set; } [JsonInclude] // This is fake, but what I am wishing existed public string C { get; set; } } public class NormalSubObject: ParentSubObject { public string B { get; set; } }如果MainObj.SubObj是NormalSubObject,它将同时对A和B进行序列化,但是如果它是SubObjectWithOnlyDeclared,则将仅对B和C进行序列化,而忽略父属性
If MainObj.SubObj was a NormalSubObject it would serailize both A and B but if it was SubObjectWithOnlyDeclared it would serailize only B and C and ignore the parent property
推荐答案您可以编写如下的自定义ContractResolver
You can write a custom ContractResolver like below
public class IgnoreParentPropertiesResolver : DefaultContractResolver { bool IgnoreBase = false; public IgnoreParentPropertiesResolver(bool ignoreBase) { IgnoreBase = ignoreBase; } protected override IList<JsonProperty> CreateProperties(Type type, MemberSerialization memberSerialization) { var allProps = base.CreateProperties(type, memberSerialization); if (!IgnoreBase) return allProps; //Choose the properties you want to serialize/deserialize var props = type.GetProperties(~BindingFlags.FlattenHierarchy); return allProps.Where(p => props.Any(a => a.Name == p.PropertyName)).ToList(); } }
现在,您可以在序列化过程中使用它,如下所示:
Now you can use it in your serialization process as:
var settings = new JsonSerializerSettings() { ContractResolver = new IgnoreParentPropertiesResolver(true) }; var json1 = JsonConvert.SerializeObject(new SubObjectWithOnlyDeclared(),settings );更多推荐
Json.net仅序列化某些属性
发布评论