C# 使用Newtonsoft JSON反序列化IList对象
我正在使用ConcreteCollectionTypeConverter来反序列化IList类型的对象。我可能做错了,因为我一直遇到异常“无法将列表转换为IList” 我的对象接口如下所示:C# 使用Newtonsoft JSON反序列化IList对象,c#,.net,json,deserialization,json.net,C#,.net,Json,Deserialization,Json.net,我正在使用ConcreteCollectionTypeConverter来反序列化IList类型的对象。我可能做错了,因为我一直遇到异常“无法将列表转换为IList” 我的对象接口如下所示: [JsonObject(MemberSerialization.OptIn)] public IMyInterface { [JsonProperty("associatedContact")] [JsonConverter(typeof(ConcreteCollectionTypeCon
[JsonObject(MemberSerialization.OptIn)]
public IMyInterface {
[JsonProperty("associatedContact")]
[JsonConverter(typeof(ConcreteCollectionTypeConverter<IList<ISomeOtherInterface>, List<SomeOtherInterface>>))]
IList<ISomeOtherInterface> MyObject { get; set; }
}
public MyImplementation : IMyInterface {
public List<SomeOtherImplementation> MyObject { get; set; }
public MyImplementations () {
MyObject = new List<SomeOtherImplementation>();
}
}
class ConcreteCollectionTypeConverter<TInterface, TImplementation> : JsonConverter where TImplementation : TInterface
{
public override bool CanConvert(Type objectType)
{
return true;
}
public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
{
serializer.Serialize(writer, value);
}
public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
{
return serializer.Deserialize<TImplementation>(reader);
}
}
var myDeserializedObject = JsonConvert.DeserializeObject<MyImplementation>(jsonObject.ToString());
[JsonObject(MemberSerialization.OptIn)]
公共信息接口{
[JsonProperty(“关联联系人”)]
[JsonConverter(类型of(ConcreteCollectionTypeConverter))]
IList MyObject{get;set;}
}
我的对象实现如下所示:
[JsonObject(MemberSerialization.OptIn)]
public IMyInterface {
[JsonProperty("associatedContact")]
[JsonConverter(typeof(ConcreteCollectionTypeConverter<IList<ISomeOtherInterface>, List<SomeOtherInterface>>))]
IList<ISomeOtherInterface> MyObject { get; set; }
}
public MyImplementation : IMyInterface {
public List<SomeOtherImplementation> MyObject { get; set; }
public MyImplementations () {
MyObject = new List<SomeOtherImplementation>();
}
}
class ConcreteCollectionTypeConverter<TInterface, TImplementation> : JsonConverter where TImplementation : TInterface
{
public override bool CanConvert(Type objectType)
{
return true;
}
public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
{
serializer.Serialize(writer, value);
}
public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
{
return serializer.Deserialize<TImplementation>(reader);
}
}
var myDeserializedObject = JsonConvert.DeserializeObject<MyImplementation>(jsonObject.ToString());
public MyImplementation:IMyInterface{
公共列表MyObject{get;set;}
公共实现(){
MyObject=新列表();
}
}
我的Json转换器如下所示:
[JsonObject(MemberSerialization.OptIn)]
public IMyInterface {
[JsonProperty("associatedContact")]
[JsonConverter(typeof(ConcreteCollectionTypeConverter<IList<ISomeOtherInterface>, List<SomeOtherInterface>>))]
IList<ISomeOtherInterface> MyObject { get; set; }
}
public MyImplementation : IMyInterface {
public List<SomeOtherImplementation> MyObject { get; set; }
public MyImplementations () {
MyObject = new List<SomeOtherImplementation>();
}
}
class ConcreteCollectionTypeConverter<TInterface, TImplementation> : JsonConverter where TImplementation : TInterface
{
public override bool CanConvert(Type objectType)
{
return true;
}
public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
{
serializer.Serialize(writer, value);
}
public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
{
return serializer.Deserialize<TImplementation>(reader);
}
}
var myDeserializedObject = JsonConvert.DeserializeObject<MyImplementation>(jsonObject.ToString());
class-ConcreteCollectionTypeConverter:JsonConverter,其中TImplementation:TInterface
{
公共覆盖布尔CanConvert(类型objectType)
{
返回true;
}
公共重写void WriteJson(JsonWriter编写器、对象值、JsonSerializer序列化器)
{
serializer.Serialize(writer,value);
}
公共重写对象ReadJson(JsonReader阅读器,类型objectType,对象existingValue,JsonSerializer序列化程序)
{
返回序列化程序。反序列化(读取器);
}
}
我在项目的其他地方调用反序列化方法,如下所示:
[JsonObject(MemberSerialization.OptIn)]
public IMyInterface {
[JsonProperty("associatedContact")]
[JsonConverter(typeof(ConcreteCollectionTypeConverter<IList<ISomeOtherInterface>, List<SomeOtherInterface>>))]
IList<ISomeOtherInterface> MyObject { get; set; }
}
public MyImplementation : IMyInterface {
public List<SomeOtherImplementation> MyObject { get; set; }
public MyImplementations () {
MyObject = new List<SomeOtherImplementation>();
}
}
class ConcreteCollectionTypeConverter<TInterface, TImplementation> : JsonConverter where TImplementation : TInterface
{
public override bool CanConvert(Type objectType)
{
return true;
}
public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
{
serializer.Serialize(writer, value);
}
public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
{
return serializer.Deserialize<TImplementation>(reader);
}
}
var myDeserializedObject = JsonConvert.DeserializeObject<MyImplementation>(jsonObject.ToString());
var myDeserializedObject=JsonConvert.DeserializeObject(jsonObject.ToString());
上面提到的jsonObject已正确解析
我知道这是可能的,因为我在这里看到了一条评论,所以来自一个用户,他认为他做到了(接受答案的第一条评论)
这种方法适用于非集合项(即使用JsonConverer(typeof(ConcreteTypeCOnverter))反序列化接口类型接口MyObject的对象)
如果我只使用列表而不是ILists,我甚至不需要类型转换器,但我的要求是确保使用ICollections,因为可能存在非标准实现。我相信这将满足您的需要:
public class ConcreteListTypeConverter<TInterface, TImplementation> : JsonConverter where TImplementation : TInterface
{
public override bool CanConvert(Type objectType)
{
return true;
}
public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
{
var res = serializer.Deserialize<List<TImplementation>>(reader);
return res.ConvertAll(x => (TInterface) x);
}
public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
{
serializer.Serialize(writer, value);
}
}
公共类ConcreteListTypeConverter:JsonConverter,其中TImplementation:TInterface
{
公共覆盖布尔CanConvert(类型objectType)
{
返回true;
}
公共重写对象ReadJson(JsonReader阅读器,类型objectType,对象existingValue,JsonSerializer序列化程序)
{
var res=序列化程序。反序列化(读取器);
返回res.ConvertAll(x=>(TInterface)x);
}
公共重写void WriteJson(JsonWriter编写器、对象值、JsonSerializer序列化器)
{
serializer.Serialize(writer,value);
}
}