ServiceStack.Text JsonSerializer - SerializeToString失败whit DateTime.Max

时间:2016-09-27 17:20:38

标签: c# datetime servicestack servicestack-text

我正在使用c#在Web应用程序上使用ServiceStack.Text JsonSerializer。问题是,对于特定的功能,我需要将日期值序列化为json,但当值为DateTime.MaxValue时,当前失败。

这是复制它的一些代码示例(它是一个简单的控制台应用程序):

class Program
{
    static void Main(string[] args)
    {
        var jsonResultMin = JsonSerializer.SerializeToString<DateTime>(DateTime.MinValue);
        var deJsonMin = JsonSerializer.DeserializeFromString<DateTime>(jsonResultMin);
        Console.WriteLine("jsonResultMin" + jsonResultMin);
        Console.WriteLine("deJsonMin" + deJsonMin);

        var jsonResultMax = JsonSerializer.SerializeToString<DateTime>(DateTime.MaxValue);
        var deJsonMax = JsonSerializer.DeserializeFromString<DateTime>(jsonResultMax);
        Console.WriteLine("jsonResultMax" + jsonResultMax);
        Console.WriteLine("deJsonMax" + deJsonMax);

        Console.ReadLine();

    }
}

堆栈跟踪是:

System.ArgumentOutOfRangeException was unhandled
  HResult=-2146233086
  Message=The added or subtracted value results in an un-representable DateTime.
Parameter name: value
  Source=mscorlib
  ParamName=value
  StackTrace:
       at System.DateTime.Subtract(TimeSpan value)
       at ServiceStack.Text.DateTimeExtensions.ToDateTimeSinceUnixEpoch(DateTime dateTime)
       at ServiceStack.Text.DateTimeExtensions.ToUnixTimeMs(DateTime     dateTime)
       at ServiceStack.Text.Common.DateTimeSerializer.WriteWcfJsonDate(TextWriter writer,     DateTime dateTime)
       at ServiceStack.Text.Json.JsonTypeSerializer.WriteDateTime(TextWriter writer, Object oDateTime)
       at ServiceStack.Text.Json.JsonWriter`1.WriteRootObject(TextWriter writer, Object value)
       at ServiceStack.Text.JsonSerializer.SerializeToString[T](T value)
       at ConsoleApplication1.Program.Main(String[] args) 
       at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)
       at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
       at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
       at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
       at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
       at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
       at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
       at System.Threading.ThreadHelper.ThreadStart()

我理解由于ServiceStack库在内部进行日期时间转换而发生错误。

另外,我发现如果从最大值中减去一天(addDays(-1)),库就不会失败。

但有没有一种解决方法可以在不修改日期的情况下完成这项工作?

2 个答案:

答案 0 :(得分:2)

错误是由Unix时间转换产生的,如果设置DateHandler,可以跳过它,如:

JsConfig.DateHandler = DateHandler.ISO8601DateTime

如果您想检查所有可能的转化,请查看source code

答案 1 :(得分:1)

您可以使用以下命令跳过UTC DateTime转换:

JsConfig.SkipDateTimeConversion = true;