DeserializeObject 到 Datetime 时出错

Question

我正在尝试通过从 headers 获取日期并将 JSON 字符串转换为 DateTime，但遇到错误。

我的代码：

if (actionContext.Request.Headers.Contains("DataSync"))
{
    var date = actionContext.Request.Headers.GetValues("DataSync").First();
    userRequest.LastSync =
        JsonConvert.DeserializeObject<DateTime>(date,new IsoDateTimeConverter());
}

错误：

"Message": "An error has occurred.",
"ExceptionMessage": "Error reading date. Unexpected token: Integer. Path '', line 1, position 2.",
"ExceptionType": "Newtonsoft.Json.JsonReaderException",
"StackTrace": " em Newtonsoft.Json.JsonReader.ReadAsDateTimeInternal()\ \ em Newtonsoft.Json.Serialization.JsonSerializerInternalReader.ReadForType(JsonReader reader, JsonContract contract, Boolean hasConverter)\ \ em Newtonsoft.Json.Serialization.JsonSerializerInternalReader.Deserialize(JsonReader reader, Type objectType, Boolean checkAdditionalContent)\ \ em Newtonsoft.Json.JsonSerializer.DeserializeInternal(JsonReader reader, Type objectType)\ \ em Newtonsoft.Json.JsonConvert.DeserializeObject(String value, Type type, JsonSerializerSettings settings)\ \ em Newtonsoft.Json.JsonConvert.DeserializeObject[T](String value, JsonSerializerSettings settings)\ \ em Portal.Infraestructure.Filters.UserRequestFilter.OnActionExecuting(HttpActionContext actionContext) na d:\Projetos\api\Portal\Infraestructure\Filters\UserRequestFilter.cs:linha 28\ \ em System.Web.Http.Filters.ActionFilterAttribute.OnActionExecutingAsync(HttpActionContext actionContext, CancellationToken cancellationToken)\ \ --- Fim do rastreamento de pilha do local anterior onde a exceção foi gerada ---\ \ em System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)\ \ em System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\ \ em System.Web.Http.Filters.ActionFilterAttribute.<ExecuteActionFilterAsyncCore>d__0.MoveNext()\ \ --- Fim do rastreamento de pilha do local anterior onde a exceção foi gerada ---\ \ em System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)\ \ em System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\ \ em System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()\ \ em System.Web.Http.Controllers.ActionFilterResult.<ExecuteAsync>d__2.MoveNext()\ \ --- Fim do rastreamento de pilha do local anterior onde a exceção foi gerada ---\ \ em System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)\ \ em System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\ \ em System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()\ \ em System.Web.Http.Dispatcher.HttpControllerDispatcher.<SendAsync>d__1.MoveNext()

我正在使用邮递员进行测试。我正在打电话给我的控制器并在邮递员 headers 中传递日期。我该怎么做才能修复此错误？

Answer 1

也许使用日期时间格式可以解决问题。

var format = "dd/MM/yyyy"; 
var dateTimeConverter = new IsoDateTimeConverter { DateTimeFormat = format };

var ld = JsonConvert.DeserializeObject<DateTime>(json,      dateTimeConverter);

Answer 2

解法：

使用DateTime.Parse()

DeserializeObject 到 Datetime 时出错

Error when DeserializeObject to Datetime

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