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在我的服务器端绑定JSON值失败

list json asp.net c#

hud · 技术社区 · 6 年前

json 我的c代码中的值。因此,我编写了如下代码

public static void WriteToIEMService(string jsonValue)
    {
        string TimeFormatText = DateTime.Now.ToString("dd-MM-yyyy HH:mm:ss");
        string strFileCreationDate = DateTime.Now.ToString("dd/MM/yyyy");
        string strFileName = ConfigurationManager.AppSettings["IEM_SERVICEFILE"].ToString();

        try
        {            
           using (StreamWriter sw = File.CreateText(ConfigurationManager.AppSettings["LogFileDirectory"].ToString() + strFileName + "_" + strFileCreationDate + ".txt"))
            {
                List<MasterServiceResponse> records = JsonConvert.DeserializeObject<List<MasterServiceResponse>>(jsonValue);

                sw.WriteLine("IEM Service started and send data to IEM below");

                foreach (MasterServiceResponse record in records)
               {
                   sw.WriteLine(record.SapId);
               }
            }
        }
        catch (Exception)
        {

            throw;
        }
    }

但我也有错误

无法将当前JSON对象(例如{“名称”:“值”})反序列化为类型“System.Collections.Generic.List`1[IPColoBilling\u BKP.App\u Code.MasterServiceResponse]”,因为该类型需要JSON数组(例如[1,2,3])才能正确反序列化。

请帮忙

我的json值如下所示

{"SiteData":[{"SAPId":"I-UW-SRPR-ENB-I001","SiteRFEIDate":"03-11-2014","SiteRFSDate":"03-11-2014","ID_OD":"ID","ID_ODchangeDate":"04-11-2018","NoofRRHBase":"0","RRHBaseChangeEffectiveDate":"","No_Of_Tenancy":"3","TenancyChangeEffectiveDate":"03-11-2014","SiteStatus":"Active","SiteDropDate":""}]}

public class MasterServiceResponse
{
    public string SapId { get; set; }
    public string AcknowledgementID { get; set; }
    public string FlagResponse { get; set; }
    public string ResponseMessage { get; set; }
    public string GisStatus { get; set; }
    public string GisSendDate { get; set; }
    public string SiteRFEIDate { get; set; }
    public string SiteRFSDate { get; set; }
    public string SiteRRHDate { get; set; }
    public string NoofRRHBase { get; set; }
}

4 回复 | 直到 6 年前

Mihir Dave 6 年前

更新: Panagiotis Kanavos指出,您并没有创建根对象,所以必须重新构造模型。

public class SiteData
{
    public string SAPId { get; set; }
    public string SiteRFEIDate { get; set; }
    public string SiteRFSDate { get; set; }
    public string ID_OD { get; set; }
    public string ID_ODchangeDate { get; set; }
    public string NoofRRHBase { get; set; }
    public string RRHBaseChangeEffectiveDate { get; set; }
    public string No_Of_Tenancy { get; set; }
    public string TenancyChangeEffectiveDate { get; set; }
    public string SiteStatus { get; set; }
    public string SiteDropDate { get; set; }
}

public class RootObject
{
    public List<SiteData> SiteData { get; set; }
}

您还必须更改反序列化代码

例如。

RootObject records = JsonConvert.DeserializeObject<RootObject>(jsonValue);

foreach (SiteData record in records.SiteData)
{
   sw.WriteLine(record.SapId);
}

Svetoslav Petrov 6 年前

正如错误所提到的,您无法将JSON对象反序列化为列表。因此,不是:

List<MasterServiceResponse> records = JsonConvert.DeserializeObject<List<MasterServiceResponse>>(jsonValue);

MyObject obj = JsonConvert.DeserializeObject<MyObject>(jsonValue);

Tetsuya Yamamoto 6 年前

List<MasterServiceResponse> 收集

您应该创建一个要保存的类 :

public class SiteData
{
    public List<MasterServiceResponse> MasterServiceResponse { get; set; }
}

List<MasterServiceResponse> records = JsonConvert.DeserializeObject<List<MasterServiceResponse>>(jsonValue);

要像这样返回单个对象,请执行以下操作:

SiteData records = JsonConvert.DeserializeObject<SiteData>(jsonValue);

Cannot deserialize the current JSON object (e.g. {"name":"value"}) into type 'System.Collections.Generic.List`1

Peter B 6 年前

因为您的JSON以一个键开始 "SiteData" 如果具有数组值,则需要创建一个帮助器类来匹配该结构(例如。 class SiteResponse )具有名为 SiteData 类型 List<MasterServiceResponse> .

代码:

public class SiteResponse
{
    public List<MasterServiceResponse> SiteData { get; set; }
}

private static void TestJson()
{
    var jsonValue = "{\"SiteData\":[{\"SAPId\":\"I-UW-SRPR-ENB-I001\",\"SiteRFEIDate\":\"03-11-2014\",\"SiteRFSDate\":\"03-11-2014\",\"ID_OD\":\"ID\",\"ID_ODchangeDate\":\"04-11-2018\",\"NoofRRHBase\":\"0\",\"RRHBaseChangeEffectiveDate\":\"\",\"No_Of_Tenancy\":\"3\",\"TenancyChangeEffectiveDate\":\"03-11-2014\",\"SiteStatus\":\"Active\",\"SiteDropDate\":\"\"}]}";

    var siteResponse = JsonConvert.DeserializeObject<SiteResponse>(jsonValue);
    List<MasterServiceResponse> records = siteResponse.SiteData;
}

https://dotnetfiddle.net/wzg8AK