C# 无法使用列表中的列表反序列化JSON
我有一个JSON，数据来自APIC# 无法使用列表中的列表反序列化JSON,c#,.net,json,json-deserialization,C#,.net,Json,Json Deserialization,我有一个JSON，数据来自API {"S":"Success","Result":{"Data":[[2251,2570205,"05-Sep-19 09:53 AM","--","Rs. 0","Cash","Amount Paid : 0"],[2248,3817456,"01-Sep-19 08:53 AM","--","Rs. 168.00","NC","Reason : NC"],[2247,2997168,"01-Sep-19 08:49 AM","16","Rs. 660.00",
{"S":"Success","Result":{"Data":[[2251,2570205,"05-Sep-19 09:53 AM","--","Rs. 0","Cash","Amount Paid : 0"],[2248,3817456,"01-Sep-19 08:53 AM","--","Rs. 168.00","NC","Reason : NC"],[2247,2997168,"01-Sep-19 08:49 AM","16","Rs. 660.00","Card","Amount Paid : 660, Type : Visa"],[2245,6410400,"01-Sep-19 08:46 AM","16","Rs. 726.00","Card","Amount Paid : 726, Type : Visa"]],"Headers":["S.No.","Order Id","Date","Table No","Amount","Mode of Payment","More Info"],"Footer":["Total","4","","","Rs. 1,386.00","",""]}}
var jsonResult = JsonConvert.DeserializeObject<GenericJSONResponse<ReportRootObject>>(response);
jsonResult.Result.ReportMasterDetailsData.Data访问字段时
我在“ReportMasterDetailsData”处收到空引用异常
我遗漏了什么？？？好吧，让我们将您的JSON结果视为格式化的JSON：
{
"S":"Success",
"Result":
{
"Data":
[
[2251,2570205,"05-Sep-19 09:53 AM","--","Rs. 0","Cash","Amount Paid : 0"],
[2248,3817456,"01-Sep-19 08:53 AM","--","Rs. 168.00","NC","Reason : NC"],
[2247,2997168,"01-Sep-19 08:49 AM","16","Rs. 660.00","Card","Amount Paid : 660, Type : Visa"],
[2245,6410400,"01-Sep-19 08:46 AM","16","Rs. 726.00","Card","Amount Paid : 726, Type : Visa"]
],
"Headers":["S.No.","Order Id","Date","Table No","Amount","Mode of Payment","More Info"],
"Footer":["Total","4","","","Rs. 1,386.00","",""]
}
}
现在让我们看看你们的课程jsonResult.Result.ReportMasterDetailsData.Data
将返回null，因为在JSON响应属性中调用的Result
不是ReportMasterDetailsData
，所以将ReportMasterDetailsData
属性重命名为Result
。如果不想更改属性的名称，可以在属性中添加[JsonProperty（“Result”）]
ReportMasterDetailsData
类的Data
属性类型为List
，但在JSON响应中，此集合没有属性名称。您可以将List
更改为List
，然后以某种方式将其转换为ReportMasterDetails
类。也可以不使用属性名对其进行反序列化。看和看。我希望这能帮助您我建议使用json字符串创建模型，并使用jsonvert.PopulateObject
完成其余的工作。这是我试过的代码片段
public class Result
{
public List<List<object>> Data { get; set; }
public List<string> Headers { get; set; }
public List<string> Footer { get; set; }
}
public class ReportRootObject
{
public string S { get; set; }
public Result Result { get; set; }
}
static void Main(string[] args)
{
string response = "{\"S\":\"Success\",\"Result\":{\"Data\":[[2251,2570205,\"05 - Sep - 19 09:53 AM\",\"--\",\"Rs. 0\",\"Cash\",\"Amount Paid : 0\"],[2248,3817456,\"01 - Sep - 19 08:53 AM\",\"--\",\"Rs. 168.00\",\"NC\",\"Reason: NC\"],[2247,2997168,\"01 - Sep - 19 08:49 AM\",\"16\",\"Rs. 660.00\",\"Card\",\"Amount Paid : 660, Type: Visa\"],[2245,6410400,\"01 - Sep - 19 08:46 AM\",\"16\",\"Rs. 726.00\",\"Card\",\"Amount Paid : 726, Type: Visa\"]],\"Headers\":[\"S.No.\",\"Order Id\",\"Date\",\"Table No\",\"Amount\",\"Mode of Payment\",\"More Info\"],\"Footer\":[\"Total\",\"4\",\"\",\"\",\"Rs. 1,386.00\",\"\",\"\"]}}";
ReportRootObject jsonResult = new ReportRootObject();
JsonConvert.PopulateObject(response, jsonResult);
Console.WriteLine($"SerialNumber: {jsonResult.Result.Data[0][0]}");
}
公共类结果
{
公共列表数据{get；set；}
公共列表头{get；set；}
公共列表页脚{get；set；}
}
公共类ReportRootObject
{
公共字符串S{get；set；}
公共结果结果{get；set；}
}
静态void Main（字符串[]参数）
{
以下几方面的数据：：[225512570205，“05-9-9-9月19日09:53上午上午9点，”，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，“Rs.0\”，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，，]，[22456410400、\'01-Sep-19 08:46 AM\'、\'16\'、\'Rs.726.00\'、\'Card\'、\'Amount:726，Type:Visa\']、\'Header\'：[\'S.No.\'、\'Order Id\'、\'Date\'、\'Table No\'、'Amount\'、\'S\'、'S付款方式\'、'More Info\'、'更多信息\]、'Footer\'：[\'Total\'、'4\'、'S\'、'S\'、'1386、'S\'、'；
ReportRootObject jsonResult=新的ReportRootObject（）；
PopulateObject（响应，jsonResult）；
Console.WriteLine（$“SerialNumber:{jsonResult.Result.Data[0][0]}”）；
}
试试这个JsonConvert.DeserializeObject
@Nkosi请详细说明？使用``json2csharp.com``我得到公共类结果{公共列表数据{get；set；}公共列表头{get；set；}公共列表尾{get；set；}公共类根对象{public string S{get；set；}公共结果{get；set；}}
@mtkachenko这不是问题所在。GenericJSONResponse
只是一个泛型对象，它不应该是：jsonResult.ReportRootObject.ReportMasterDetailsData.Data；或者一些cast…@Nkosi不确定你的意思。。这并不能回答问题。。为什么必须调用Result属性？你在qu中检查了我的代码吗estion？？？@PranjalVatsa好的，如果您不想更改名称，可以在PropertyTanks@krishna mohan varma中添加[JsonProperty（“结果”）]
public class ReportMasterDetails
{
public int SerialNumber { get; set; }
public int OrderId { get; set; }
public string Date { get; set; }
public string TableNumber { get; set; }
public string Amount { get; set; }
public string ModeOfPayment { get; set; }
public string Reason { get; set; }
}
{
"S":"Success",
"Result":
{
"Data":
[
[2251,2570205,"05-Sep-19 09:53 AM","--","Rs. 0","Cash","Amount Paid : 0"],
[2248,3817456,"01-Sep-19 08:53 AM","--","Rs. 168.00","NC","Reason : NC"],
[2247,2997168,"01-Sep-19 08:49 AM","16","Rs. 660.00","Card","Amount Paid : 660, Type : Visa"],
[2245,6410400,"01-Sep-19 08:46 AM","16","Rs. 726.00","Card","Amount Paid : 726, Type : Visa"]
],
"Headers":["S.No.","Order Id","Date","Table No","Amount","Mode of Payment","More Info"],
"Footer":["Total","4","","","Rs. 1,386.00","",""]
}
}
public class Result
{
public List<List<object>> Data { get; set; }
public List<string> Headers { get; set; }
public List<string> Footer { get; set; }
}
public class ReportRootObject
{
public string S { get; set; }
public Result Result { get; set; }
}
static void Main(string[] args)
{
string response = "{\"S\":\"Success\",\"Result\":{\"Data\":[[2251,2570205,\"05 - Sep - 19 09:53 AM\",\"--\",\"Rs. 0\",\"Cash\",\"Amount Paid : 0\"],[2248,3817456,\"01 - Sep - 19 08:53 AM\",\"--\",\"Rs. 168.00\",\"NC\",\"Reason: NC\"],[2247,2997168,\"01 - Sep - 19 08:49 AM\",\"16\",\"Rs. 660.00\",\"Card\",\"Amount Paid : 660, Type: Visa\"],[2245,6410400,\"01 - Sep - 19 08:46 AM\",\"16\",\"Rs. 726.00\",\"Card\",\"Amount Paid : 726, Type: Visa\"]],\"Headers\":[\"S.No.\",\"Order Id\",\"Date\",\"Table No\",\"Amount\",\"Mode of Payment\",\"More Info\"],\"Footer\":[\"Total\",\"4\",\"\",\"\",\"Rs. 1,386.00\",\"\",\"\"]}}";
ReportRootObject jsonResult = new ReportRootObject();
JsonConvert.PopulateObject(response, jsonResult);
Console.WriteLine($"SerialNumber: {jsonResult.Result.Data[0][0]}");
}