[英]Restsharp error on deserialzation when nested value is null
當嵌套值為null時,我遇到了錯誤。 如果該值不為null,則一切正常。 如果未嵌套該值,則不會發生這種情況。
錯誤是:
InvalidCastException:無法將類型為“ System.String”的對象轉換為類型為“ System.Collections.Generic.IDictionary`2 [System.String,System.Object]”。
當我檢查列表合同上的response.ErrorException!= null時發生錯誤
Json返回:合同管理員嵌套且為空錯誤:兩端未嵌套為空白且無錯誤:
"result": [
{
"sys_id": "06dc3133db1747808c47499e0b96192e",
"number": "CNTR001234",
"short_description": "Contract 123",
"u_internal_contact": {
"link": "https://website",
"value": "5b4080490a0a3c9e016cb2a9f4eb57b1"
},
"vendor": {
"link": "https://website",
"value": "b7e7c073c0a801690143e7b7d29eb408"
},
"ends": "",
"payment_amount": "60000",
"u_status": "Active",
"starts": "2018-01-01",
"contract_administrator": ""
}
]
}
碼
public class Results
{
public List<Contract> items { get; set; }
}
public class Contract
{
public string sys_id { get; set; }
public string number { get; set; }
public string short_description { get; set; }
public string ends { get; set; }
public string payment_amount { get; set; }
public string u_status { get; set; }
public string starts { get; set; }
public Vendor vendor { get; set; }
public ContractAdmin contract_administrator { get; set; }
public InternalContact u_internal_contact { get; set; }
}
public class Vendor
{
public string link { get; set; }
public string value { get; set; }
}
public class ContractAdmin
{
public string link { get; set; }
public string value { get; set; }
}
public class InternalContact
{
public string link { get; set; }
public string value { get; set; }
}
public class refResults
{
public List<refName> itemName { get; set; }
}
public class refName
{
public string name { get; set; }
}
class ImportContracts
{
public static void ProcessImport()
{
RestClient contractsRequest = new RestClient(Properties.Settings.Default.RestURL);
contractsRequest.Authenticator = new HttpBasicAuthenticator(Properties.Settings.Default.userName, Properties.Settings.Default.password);
contractsRequest.AddHandler("application/json", new RestSharp.Deserializers.JsonDeserializer());
RestRequest request = new RestRequest();
request.RootElement = "result";
request.OnBeforeDeserialization = resp => { resp.ContentType = "application/json"; };
IRestResponse<List<Contract>> response = contractsRequest.Execute<List<Contract>>(request);
Console.WriteLine(response.Content);
if (response.ErrorException != null)
{
const string message = "Error retrieving response. Check inner details for more info.";
var ex = new ApplicationException(message, response.ErrorException);
throw ex;
}
foreach (Contract contract in response.Data)
{
//Console.WriteLine(contract.sys_id);
string strVendor = GetName(contract.vendor.link.ToString());
string strInternalContact = GetName(contract.u_internal_contact.link.ToString());
string strContractAdmin = GetName(contract.contract_administrator.ToString());
}
}
static public string GetName (string link)
{
RestClient nameRequest = new RestClient(link);
nameRequest.Authenticator = new HttpBasicAuthenticator(Properties.Settings.Default.userName, Properties.Settings.Default.password);
nameRequest.AddHandler("application/json", new RestSharp.Deserializers.JsonDeserializer());
RestRequest requestedName = new RestRequest();
requestedName.RootElement = "result";
requestedName.OnBeforeDeserialization = resp => { resp.ContentType = "application/json"; };
IRestResponse<List<refName>> response = nameRequest.Execute<List<refName>>(requestedName);
if (response.ErrorException != null)
{
const string message = "Error retrieving response. Check inner details for more info.";
var ex = new ApplicationException(message, response.ErrorException);
throw ex;
}
foreach (refName refname in response.Data)
{
return refname.name;
}
return "name not found";
}
}
任何幫助,將不勝感激!
查看您的JSON, "contract_administrator"
不是null
,而是一個空字符串。 您的合同需要一個ContractAdmin
對象,因此它可能正在嘗試將空字符串轉換為ContractAdmin
。
如果將"contract_administrator"
更改為null
而不是空字符串,我敢打賭它會正確解析。
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