C# 通过JSON.NET反序列化另一个类中的接口列表

我已经浏览了所有其他问题，但我无法解决这个问题

JSON如下所示

[
    {
        "$type": "UWP.Model.Management.VirtualCarPark.Item.AggregatorItem, UWP.Model",
        "UId": 17,
        "Name": "K2 BDB-INCON4-U",
        "IsPublished": true,
        "Items": [{
                "$type": "UWP.Model.Management.VirtualCarPark.Item.Item, UWP.Model",
                "IsPublished": true,
                "UId": 18,
                "OwnerUId": 17,
                "Name": "1: Root - I/O Modules K2 Switch 1",
                "UIdStreet": 1,
                "UIdArea": 1
            },
            {
                "$type": "UWP.Model.Management.VirtualCarPark.Item.Item, UWP.Model",
                "IsPublished": true,
                "UId": 19,
                "OwnerUId": 17,
                "Name": "2: Root - I/O Modules K2 Switch 2",
                "UIdStreet": 1,
                "UIdArea": 1
            }
        ]
    },
    {
        "$type": "UWP.Model.Management.VirtualCarPark.Item.AggregatorItem, UWP.Model",
        "UId": 41,
        "Name": "K3 SH2INDI424",
        "IsPublished": true,
        "Items": [{
                "$type": "UWP.Model.Management.VirtualCarPark.Item.Item, UWP.Model",
                "IsPublished": true,
                "UId": 42,
                "OwnerUId": 41,
                "Name": "1: Root - Switches K3 Switch 1",
                "UIdStreet": 1,
                "UIdArea": 1
            },
            {
                "$type": "UWP.Model.Management.VirtualCarPark.Item.Item, UWP.Model",
                "IsPublished": true,
                "UId": 43,
                "OwnerUId": 41,
                "Name": "2: Root - Switches K3 Switch 2",
                "UIdStreet": 1,
                "UIdArea": 1
            },
            {
                "$type": "UWP.Model.Management.VirtualCarPark.Item.Item, UWP.Model",
                "IsPublished": true,
                "UId": 44,
                "OwnerUId": 41,
                "Name": "3: Root - Switches K3 Switch 3",
                "UIdStreet": 1,
                "UIdArea": 1
            },
            {
                "$type": "UWP.Model.Management.VirtualCarPark.Item.Item, UWP.Model",
                "IsPublished": true,
                "UId": 45,
                "OwnerUId": 41,
                "Name": "4: Root - Switches K3 Switch 4",
                "UIdStreet": 1,
                "UIdArea": 1
            }
        ]
    }
]

var lstAggregatorItem = JsonConvert.DeserializeObject<List<AggregatorItem>>(tokenAggregators.ToString());

正如你所看到的，我把字体改成了谢谢

TypeNameHandling = TypeNameHandling.Auto

所以，我不明白为什么我不能反序列化如下

[
    {
        "$type": "UWP.Model.Management.VirtualCarPark.Item.AggregatorItem, UWP.Model",
        "UId": 17,
        "Name": "K2 BDB-INCON4-U",
        "IsPublished": true,
        "Items": [{
                "$type": "UWP.Model.Management.VirtualCarPark.Item.Item, UWP.Model",
                "IsPublished": true,
                "UId": 18,
                "OwnerUId": 17,
                "Name": "1: Root - I/O Modules K2 Switch 1",
                "UIdStreet": 1,
                "UIdArea": 1
            },
            {
                "$type": "UWP.Model.Management.VirtualCarPark.Item.Item, UWP.Model",
                "IsPublished": true,
                "UId": 19,
                "OwnerUId": 17,
                "Name": "2: Root - I/O Modules K2 Switch 2",
                "UIdStreet": 1,
                "UIdArea": 1
            }
        ]
    },
    {
        "$type": "UWP.Model.Management.VirtualCarPark.Item.AggregatorItem, UWP.Model",
        "UId": 41,
        "Name": "K3 SH2INDI424",
        "IsPublished": true,
        "Items": [{
                "$type": "UWP.Model.Management.VirtualCarPark.Item.Item, UWP.Model",
                "IsPublished": true,
                "UId": 42,
                "OwnerUId": 41,
                "Name": "1: Root - Switches K3 Switch 1",
                "UIdStreet": 1,
                "UIdArea": 1
            },
            {
                "$type": "UWP.Model.Management.VirtualCarPark.Item.Item, UWP.Model",
                "IsPublished": true,
                "UId": 43,
                "OwnerUId": 41,
                "Name": "2: Root - Switches K3 Switch 2",
                "UIdStreet": 1,
                "UIdArea": 1
            },
            {
                "$type": "UWP.Model.Management.VirtualCarPark.Item.Item, UWP.Model",
                "IsPublished": true,
                "UId": 44,
                "OwnerUId": 41,
                "Name": "3: Root - Switches K3 Switch 3",
                "UIdStreet": 1,
                "UIdArea": 1
            },
            {
                "$type": "UWP.Model.Management.VirtualCarPark.Item.Item, UWP.Model",
                "IsPublished": true,
                "UId": 45,
                "OwnerUId": 41,
                "Name": "4: Root - Switches K3 Switch 4",
                "UIdStreet": 1,
                "UIdArea": 1
            }
        ]
    }
]

var lstAggregatorItem = JsonConvert.DeserializeObject<List<AggregatorItem>>(tokenAggregators.ToString());

那么，有什么东西可以教序列化程序“使用这个类的这个实现”吗？因为这个例外让我很恼火

Newtonsoft.Json.JsonSerializationException:'无法创建UWP.Model.Management.VirtualPark.Item.IItem类型的实例。类型是接口或抽象类，无法实例化。路径“[0]。项目[0]。已发布”，第10行，位置22

您必须在此处传递“模型”而不是“聚合项”：

//根myDeserializedClass=JsonConvert.DeserializeObject（myJsonResponse）；
公共类项目
{
[JsonProperty（“$type”）]
公共字符串类型{get；set；}
公共bool已发布{get；set；}
公共int-UId{get；set；}
public int OwnerUId{get；set；}
公共字符串名称{get；set；}
公共int-UIdStreet{get；set；}
public int UIdArea{get；set；}
}
公共类根
{
[JsonProperty（“$type”）]
公共字符串类型{get；set；}
公共int-UId{get；set；}
公共字符串名称{get；set；}
公共bool已发布{get；set；}
公共列表项{get；set；}
}
var lstAggregatorItem=JsonConvert.DeserializeObject（tokenAggregators.ToString（））；

当反序列化此属性时，Newtonsoft API不知道要使用哪个类

公共IList项{get；set；}

，因为您使用的是名为

IItem

的接口，而不是实际的类。Rehaan答案中的相关代码是

公共列表项{get；set；}

。请注意您的代码（您使用了

IItem

和Rehaan

项

）的不同之处，我理解了，但这是唯一的方法吗？正如我写的那样，我希望在不公开实现的情况下保留接口。如果没有其他聪明的方法，我必须用另一个实现来创建另一个类，而不是interfaces@lunatic84. 对于json结构，您可以只拥有两个额外的类，这样，如果json在以后发生更改，您的agregator类的逻辑就不会中断。要在json类和agregator之间转换，可以使用automapper。如果您想在json相关类中使用接口，可以使用