AngularJS httpInterceptor设置Date Header Value

Question

下面的代码是我的$ http Interceptor Factory。在此代码中，我已将日期标题值设置为 config.headers.Date 的当前日期，但它在Asp.Net WebApi请求标头类中显示为null。如何设置Date Header值以从客户端获取Local DateTime值。

'use strict';
define(['appconfig'], function (app) {

  app.factory('authInterceptorFactory', ['$q', '$location', 'localStorageService', function ($q, $location, localStorageService) {

    var authInterceptorServiceFactory = {};

    var _request = function (config) {

      config.headers = config.headers || {};

      // set date
      config.headers.Date = new Date().toUTCString();

      // set authorization
      var authData = localStorageService.get('authorizationData');
      if (authData) {
        config.headers.Authorization = 'Bearer ' + authData.token;
      }

      return config;
    }

    var _responseError = function (rejection) {
      if (rejection.status === 401) {
        $location.path('/login');
      }
      return $q.reject(rejection);
    }

    authInterceptorServiceFactory.request = _request;
    authInterceptorServiceFactory.responseError = _responseError;

    return authInterceptorServiceFactory;
  }]);
});

这是我的WebApi Controller.But ** ApiService.ClientDate **总是返回服务器日期，因为request.Headers.Date的值返回null。请告知如何发送客户端日期时间以从服务器访问。< / p>

public class AuthorizeController : ApiController
{
  private ConnectionProvider cp;

  protected override void Initialize(System.Web.Http.Controllers.HttpControllerContext controllerContext)
  {
    base.Initialize(controllerContext);

    if (User.Identity.IsAuthenticated) {
      var request = controllerContext.Request;

      // get connection name from claims
      ClaimsPrincipal principal = request.GetRequestContext().Principal as ClaimsPrincipal;
      var Site = principal.Claims.Where(c => c.Type == "site").Single().Value;

      // create db connection
      cp = new ConnectionProvider(Site);
      ApiService.dbConnection = cp.GetDbConnection();

      // create db context
      ApiService.dbContext = new Models.WarenetModel(Site);

      ApiService.UserId = User.Identity.Name;    // set userId
      ApiService.HostName = request.Headers.Host;    // set hostname
      ApiService.ClientDate = request.Headers.Date.HasValue ? request.Headers.Date.Value.LocalDateTime : DateTime.Now;     // set client date
    }
  }

  protected override void Dispose(bool disposing)
  {
    if (disposing) {
      if (cp != null) cp.Dispose();
      if (ApiService.dbContext != null) ApiService.dbContext.Dispose();
    }
    base.Dispose(disposing);
  }
}