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public class StationsController : ApiController
{
[HttpPost]
public IHttpActionResult PostStations()
{
HttpContext.Current.Response.Expires = 1;
HttpContext.Current.Response.Cache.SetExpires(DateTime.Now);
HttpContext.Current.Response.AddHeader("Expires", "1");
HttpContext.Current.Response.Headers["Expires"] = "1";
string a = HttpContext.Current.Response.Headers.Get("Expires"); //这里返回1
return Json<string>("OK");
}
}