c# - ServiceStack.Text JsonSerializer - SerializeToString 因 DateTime.Max 失败

Question

我在使用 C# 的 Web 应用程序上使用 ServiceStack.Text JsonSerializer。问题是，对于特定功能，我需要将日期值序列化为 json，但当前值是 DateTime.MaxValue 时失败。

这里有一些代码示例来复制它(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()

我知道发生错误是因为 ServiceStack 库在内部进行日期时间转换。

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

但是是否有一种解决方法可以在不修改日期的情况下使这项工作正常进行？

Answer 1

错误是Unix时间转换的结果，如果你设置了一个DateHandler，你可以跳过它，比如:

JsConfig.DateHandler = DateHandler.ISO8601DateTime

如果您想检查所有可能的转换，请检查 source code