无法将当前 JSON 数组（例如 [1,2,3]）反序列化为具有复杂和嵌套对象的类型
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【中文标题】无法将当前 JSON 数组（例如 [1,2,3]）反序列化为具有复杂和嵌套对象的类型【英文标题】：Cannot deserialize the current JSON array (e.g. [1,2,3]) into type with complex and nested objects 【发布时间】：2013-07-20 04:04:30 【问题描述】：我正在尝试为复杂对象构建 web api。为此，我构建了从 JSON 反序列化此对象的自定义绑定器。
我的客户活页夹看起来像：
var paramType = p_BindingContext.ModelType;
dynamic updatedParam = Activator.CreateInstance(paramType);
JsonReader reader = new JTokenReader(JObject.Parse
(p_ActionContext.Request.Content.ReadAsStringAsync().Result));
JObject jObject = JObject.Load(reader);
JsonSerializer serializer = new JsonSerializer();
serializer.Populate(jObject.CreateReader(), updatedParam);//Here the exception thorws
p_BindingContext.Model = updatedParam;
要序列化的对象很复杂：
public class ModelRegisterUserRequest
public ModelUser User get; set;
public CampaignItem CampaignWithChosenProposal get; set;
public string ValidationToken get; set;
public string IVRToken get; set;
public string DealerID get; set;
public string SalePersonID get; set;
public class CampaignItem
public List<BannerItem> Banners get; set;
public string Code get; set;
public string CustomerInstruction get; set;
public string InfoLink get; set;
public string LobbySubTitle get; set;
public string LobbyTitle get; set;
public string MoreText get; set;
public uint NumOfColumns get; set;
public uint NumOfRows get; set;
public string OriginString get; set;
public int OriginInt get; set;
public List<ProposalItem> Proposals get; set;
public string RegulationsInfoLink get; set;
public string ServiceType get; set;
public string SubTitle get; set;
public string SWDefault get; set;
public string Title get; set;
public partial class ProposalItem
public List<string> EquipmentsCode get; set;
public string FeatureCode get; set;
public string InvalidReason get; set;
public bool IsExistsMoreInfo get; set;
public bool IsValid get; set;
public string LeadCode get; set;
public int ParamCombinationCode get; set;
public string ProductCode get; set;
public string ProductCombinationCode get; set;
public string ProposalCode get; set;
public List<ColumnItem> Columns get; set;
public List<MoreInfoItem> MoreInfoList get; set;
public List<string> PricePlans get; set;
public string ProductName get; set;
Json 是使用来自 javascript 代码的 JSON.stringify 命令创建的，看起来像：
"ValidationToken": "1cc6cca8-44d5-4042-af37-de6a0d198d17",
"AppID": "TST",
"campaignWithChosenProposal":
"Banners": [
"LocationCodeString": "ManagerTab",
"LocationCodeInt": 256,
"MediaUrl": "<a href=\"c:\\\">BANNER 10</a>"
],
"Code": "CAMP221",
"CustomerInstruction": "-1",
"InfoLink": "http://test.aspx",
"LobbySubTitle": "",
"LobbyTitle": "",
"MoreText": "",
"NumOfColumns": 0,
"NumOfRows": 0,
"OriginString": "INT",
"OriginInt": 4,
"Proposals": [
[
"EquipmentsCode": [
"5455"
],
"FeatureCode": "BE5455",
"InvalidReason": "",
"IsExistsMoreInfo": true,
"IsValid": true,
"LeadCode": "3792956510",
"ParamCombinationCode": 0,
"ProductCode": "OANTIVRP2",
"ProductCombinationCode": "0",
"ProposalCode": "291600010201C8F83661D5B82FD5F3603967588B7A72",
"Columns": [
"Content": ""
,
"Content": ""
,
"Content": ""
,
"Content": ""
,
"Content": ""
,
"Content": ""
],
"MoreInfoList": [
"Content": "3",
"MoreInfoTypesString": "LicenseFrom",
"MoreInfoTypesInt": 16
,
"Content": "3",
"MoreInfoTypesString": "LicenseTo",
"MoreInfoTypesInt": 32
,
"Content": "4.3",
"MoreInfoTypesString": "PricePeriod1",
"MoreInfoTypesInt": 64
],
"PricePlans": [
"O2"
],
"ProductName": ""
]
],
"RegulationsInfoLink": "http://www.test.aspx",
"ServiceType": "TST",
"SubTitle": "",
"SWDefault": "1",
"Title": ""
,
"User":
"CurrentLicenseNumber": 0,
"CustomerID": "21670106",
"FirstName": "",
"LastName": "",
"RequestedLicenseNumber": "3",
"SubscriberPhoneNumber": "035448428",
"IdentityNumber": "058470",
"Email": "alexanrbe@gmail.com",
"RegistrationStatus": "NOTREGISTERED"
,
"SalePersonID": "3178364",
在序列化行上抛出异常，如下所示：
Cannot deserialize the current JSON array (e.g. [1,2,3]) into type WebAPI.Models.Entities.Campaigns.CampaignObjects.ProposalItem' because the type requires a JSON object (e.g. "name":"value") to deserialize correctly.
To fix this error either change the JSON to a JSON object (e.g. "name":"value") or change the deserialized type to an array or a type that implements a collection interface (e.g. ICollection, IList) like List<T> that can be deserialized from a JSON array. JsonArrayAttribute can also be added to the type to force it to deserialize from a JSON array.
我花了几个晚上来解决这个异常，但没有找到任何解决方案 此外，该站点上的解决方案已被删除，但不支持如此复杂的问题。
https://***.com/questions/11126242/using-jsonconvert-deserializeobject-to-deserialize-json-to-a-c-sharp-poco-class
Cannot deserialize the current JSON array (e.g. [1,2,3]) into type
有人遇到了这种 JSON 意外行为并可以提供帮助吗？
谢谢
【问题讨论】：
【参考方案1】：根据您的 JSON 数据，您需要映射的对象必须如下所示（当然，除非您有自己的 JsonDeserializer）：
public class Banner
public string LocationCodeString get; set;
public int LocationCodeInt get; set;
public string MediaUrl get; set;
public class CampaignWithChosenProposal
public List<Banner> Banners get; set;
public string Code get; set;
public string CustomerInstruction get; set;
public string InfoLink get; set;
public string LobbySubTitle get; set;
public string LobbyTitle get; set;
public string MoreText get; set;
public int NumOfColumns get; set;
public int NumOfRows get; set;
public string OriginString get; set;
public int OriginInt get; set;
public List<List<>> Proposals get; set;
public string RegulationsInfoLink get; set;
public string ServiceType get; set;
public string SubTitle get; set;
public string SWDefault get; set;
public string Title get; set;
public class User
public int CurrentLicenseNumber get; set;
public string CustomerID get; set;
public string FirstName get; set;
public string LastName get; set;
public string RequestedLicenseNumber get; set;
public string SubscriberPhoneNumber get; set;
public string IdentityNumber get; set;
public string Email get; set;
public string RegistrationStatus get; set;
public class RootObject
public string ValidationToken get; set;
public string AppID get; set;
public CampaignWithChosenProposal campaignWithChosenProposal get; set;
public User User get; set;
public string SalePersonID get; set;
这是一个非常酷的工具 (json2csharp) 可以帮助您。
【讨论】：
感谢 Dimitar 我在 Json 序列化程序中发现了我的错误 @Dimitar 感谢您提供指向 json2csharp.com 的链接。非常酷的工具。以上是关于无法将当前 JSON 数组（例如 [1,2,3]）反序列化为具有复杂和嵌套对象的类型的主要内容，如果未能解决你的问题，请参考以下文章
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