asp.net core 通过请求的header来改变时区

    //自定义时区请求处理对象
    public class RouteDataRequestCultureProvider : RequestCultureProvider
    {
        public override Task<ProviderCultureResult> DetermineProviderCultureResult(HttpContext httpContext)
        {
            //在这里切换系统语言
            //以下是通过Headers传值来切换语言，你也可以通过路由、cookie、url传值来切换
            if (httpContext == null)
            {
                throw new ArgumentNullException(nameof(httpContext));
            }
            var listCulture = new List<string> { "zh-CN", "en-US" };
            string culture = "zh-CN";
            if (httpContext.Request.Headers.ContainsKey("Content-Language"))
            {
                culture = httpContext.Request.Headers["Content-Language"];
                if (culture.Contains("-"))
                {
                    var cultureArr = culture.Split('-');
                    if (cultureArr?.Length == 2)
                    {
                        culture = $"{cultureArr[0].ToLower()}-{cultureArr[1].ToUpper()}";
                    }
                }
                else
                {
                    culture = culture.ToLower();
                }
            }
            string uiCulture = culture = listCulture.Contains(culture) ? culture : "zh-CN";
            var providerResultCulture = new ProviderCultureResult(culture, uiCulture);
            return Task.FromResult(providerResultCulture);
        }
    }

//配置服务
services.Configure<RequestLocalizationOptions>(opt =>
{
    var supportedCultures = new[]
    {
        new CultureInfo(DefaultLanguage),
        new CultureInfo("en-US")
    };
    opt.DefaultRequestCulture = new Microsoft.AspNetCore.Localization.RequestCulture(DefaultLanguage);
    opt.SupportedCultures = supportedCultures;
    opt.SupportedUICultures = supportedCultures;
    opt.RequestCultureProviders = new List<IRequestCultureProvider> { new RouteDataRequestCultureProvider() };
})

//启用请求本地化中间件
app.UseRequestLocalization();