如何强制使用ISO格式"YYYY-MM-DDThh:mm:ss.sss"在JSON输出上? [英] How to force ISO format "YYYY-MM-DDThh:mm:ss.sss" on the JSON output?

问题描述

我有一个ASP .NET WebApi2 api，它以JSON格式返回一些时间戳.时间戳的分辨率为毫秒.

I have an ASP .NET WebApi2 api which returns some timestamps in JSON format. The timestamps have milliseconds resolution.

通常我会得到这种格式的时间戳，"YYYY-MM-DDThh:mm:ss.sss"

Usually I got timestamps of this format which is fine "YYYY-MM-DDThh:mm:ss.sss"

不幸的是，如果时间戳记以整秒对日期进行编码，则输出格式为"YYYY-MM-DDThh:mm:ss"(请注意缺少的.sss)

Unfortunately, if a timestamp happens to encode a date with whole second the output format is "YYYY-MM-DDThh:mm:ss" (note the missing .sss")

如何始终在JSON输出上强制使用ISO格式"YYYY-MM-DDThh:mm:ss.sss"?

How to force ISO format "YYYY-MM-DDThh:mm:ss.sss" on the JSON output all the time?

推荐答案

将此行添加到WebApiConfig.Register

public static class WebApiConfig
{
    public static void Register(HttpConfiguration config)
    {
       // existing stuff

       config.Formatters
            .JsonFormatter
            .SerializerSettings
            .DateFormatString = "yyyy'-'MM'-'dd'T'HH':'mm':'ss.fffK";
    }
}

默认格式为"yyyy'-'MM'-'dd'T'HH':'mm':'ss.FFFFFFFK"，最多6 dp.我猜是小写的f，它似乎可以工作.

The default format is "yyyy'-'MM'-'dd'T'HH':'mm':'ss.FFFFFFFK" which gives up to 6 dp. I guessed at lowercase f and it appears to work.

请注意，K是时区(对于UTC，则为Z)，对于未知日期类型，它也显示空白，这就是为什么您没有任何显示的原因.

Note the K is timezone (or Z for UTC) it also shows blank for unknown date types which is why you don't have anything showing there.

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