AngularJS：在自定义服务中执行$ http请求并返回数据

I have defined a custom http service in angular that looks like this:

我已经在angular中定义了一个自定义http服务，如下所示：

angular.module('myApp')
  .factory('myhttpserv', function ($http) {

  var url = "http://my.ip.address/"

  var http = {
      async: function (webService) {
          var promise = $http.get(url + webService, { cache: true }).then(function (response) {
            return response.data;
        });
          return promise;
       }
  };
  return http;
});

And I can access this service in my controller like so:

我可以在我的控制器中访问此服务，如下所示：

angular.module('myApp')
  .controller('myCtrl', function (myhttpserv) {

  var webService = 'getUser?u=3'

  myhttpserv.async(webService).then(function (data) {
      console.log(data);
  })

});

However I now need to streamline this process so that it is ALL contained inside the service with a static url and it simply returns the data. So that I can just call it in the controller like so:

但是，我现在需要简化此过程，以便使用静态URL将其全部包含在服务中，并且它只返回数据。所以我可以在控制器中调用它，如下所示：

 angular.module('myApp')
  .controller('myCtrl', function ($scope, myhttpserv) {

      console.log(myhttpserv.var1);
      console.log(myhttpserv.var2);
      etc...

});

I can't seem to tweak the service to get this functionality. Anyone know the correct way to do it?

我似乎无法调整服务以获得此功能。有人知道正确的方法吗？

1 个解决方案

#1

Option 1 - Use promise API

选项1 - 使用promise API

angular.module('myApp').factory('myhttpserv', function ($http) {
  return $http.get('http://my.ip.address/getUser?u=3', { cache: true });
});

Controller:

控制器：

angular.module('myApp').controller('myCtrl', function ($scope, myhttpserv) {
     myhttpserv.then(function(response){
         console.log(response.data);
     });     
});

Option 2 - Using route resolve

选项2 - 使用路线解析

angular.module('myApp', ['ngRoute']).config(['$routeProvider',
  function($routeProvider) {
    $routeProvider.
      when('/myCtrl', {
        templateUrl: 'myView.html',
        controller: 'myCtrl',
        resolve: {
        load: function (myhttpserv) {
            return myhttpserv;
        }
      });
  }]);

Service:

服务：

angular.module('myApp').factory('myhttpserv', function ($http) {
      var data = {};
      var url = "http://my.ip.address/";
      var promise = $http.get(url + 'getUser?u=3', { cache: true }).then(function (response) {
                data = response.data;
            });
      return data;
    });

Controller:

控制器：

 angular.module('myApp')
  .controller('myCtrl', function ($scope, myhttpserv) {

      console.log(myhttpserv.data.var1);
      console.log(myhttpserv.data.var1);
      etc...

});

Option 3 - Use $interval service

选项3 - 使用$ interval服务

angular.module('myApp').factory('myhttpserv', function ($http) {
  var data = {};
  var url = "http://my.ip.address/";
  var promise = $http.get(url + 'getUser?u=3', { cache: true }).then(function (response) {
            data = response.data;
        });
  return data;
});

Controller:

控制器：

angular.module('myApp').controller('myCtrl', function ($scope, $interval, myhttpserv) {
      $scope.intervalPromise = $interval(function(){
          if (Object.keys(myhttpserv.data).length!=0)
          {
              console.log(myhttpserv.data);
              $interval.cancel($scope.intervalPromise);
          }
      }, 100);    
});