AngularJS实现$ q

Question

( function() {
  angular.module('foo')

  .factory('someFac', function ($injector, $http, $q){
      var temp;
      $http.get('url').then(function(response){ //implement $q to wait for this to finish
           if(response === 1){
               temp = 1
           else{
               temp = 2
      });
     return $injector.get(temp); 
}());

如何在返回之前实现$ q以使promise得到解决？

Answer 1

虽然http确实会返回一个承诺，但您可以按原样处理结果并使用$ q库：

( function() {
angular.module('foo')

  .factory('someFac', function ($injector, $http, $q){
    var temp;
    var deferred = $q.defer();
    $http.get('url').then(function(response){ //implement $q to wait for this to finish
       if(response === 1){
           deferred.resolve(1);
       else{
           deferred.reject(2);
  });
 return deferred.promise; 
}());

您可以通过延迟对象拒绝或解析并传递必要的数据。

Answer 2

您在app.js文件中添加此代码，您不需要从服务器端抛出异常，只需在异常中添加代码，就像

一样

public ActionResult YourMethodName(string emailAddress)
    {
        BasicResponse Response = new BasicResponse();

        try
        {
           // do your work here
        }
        catch (Exception ex)
        {
            Response.ErrorKey = ex.Message;
            Response.ErrorCode = (int)HttpStatusCode.BadRequest;
        }

        return Json(Response, JsonRequestBehavior.AllowGet);
    }

它自动捕获$ q服务，您可以在服务器代码中添加所需的错误代码并在此处映射到交换机

angular.module('foo').factory('responeInterceptor', ['$q', '$window', '$injector', 'NotificationService', function ($q, $window, $injector, notifyService) {
    return {
        'response': function (response) {
            // do something on success
            return response;
        },

        //in case of Error
        'responseError': function (rejection) {


            switch (rejection.status) {
                case 400:
                    notifyService.notifyError(rejection.data.errorKey);
                    break;
                case 403:
                    $window.location.href = '/Logout';
                    break;
                default:
            }
            return $q.reject(rejection);
        }
    };
}]);