ServiceStack JsonServiceClient 请求不一致

Question

I've created a ServiceStack.JsonServiceClient to consume 3rd party API.

I'm using the Get(IReturn<MyType>) method.

My Request object looks like this:

public class MyRequest : Base, IReturn<MyType>
{
    public MyRequest(DateTime dateTime)
    {
        Date = dateTime.Date;
    }

    [DataMember(Name = "date")]
    public DateTime Date { get; init; }
}

And normally everything is fine but sometimes it fails to get results.

I set ServiceStack.JsonServiceClient.CaptureHttp() and reviewed the logs and what I found was that it's failing when Date is converted to a long rather than a string in this format yyyy-MM-dd .

I'm thinking it's probably my fault. I probably set a static setting that toggles this behavior somewhere in my solution but I don't remember and I'm not finding it.

My question is really just why is this happening.

I already have a solution and that is to modify MyRequest slightly as follows:

public class MyRequest : Base, IReturn<MyType>
{
    public MyRequest(DateTime dateTime)
    {
        Date = $"{dateTime.Date:yyyy-MM-dd}";
    }

    [DataMember(Name = "date")]
    public string Date { get; init; }
}

but again, why was this required and what could possibly be causing it to work for some time and then change behavior.

Answer 1

As per Date Serialization the ServiceStack's Serializers return Date's in WCF's Date serialization format, here's some parsing examples . You can also configure it to use a different Date format , eg:

JsConfig.Init(new Config {
    DateHandler = DateHandler.ISO8601,
});

Please note you should never put any implementation logic inside DTOs, they should be impl-free classes used as inert Data Transfer Objects (DTO) only.

All DTOs should also have a parameterless constructor which are used by serializers to rehydrate DTOs during deserialization.

If you want to add impl logic in a class put it in a separate domain model that you map to a plain DTO that is returned from your API instead.