这个想法是您直接使用promise及其promise，然后使用它们的“ then”函数来操作和访问异步返回的响应。
app.factory('myService', function($http) { var myService = { async: function() { // $http returns a promise, which has a then function, which also returns a promise var promise = $http.get('test.json').then(function (response) { // The then function here is an opportunity to modify the response console.log(response); // The return value gets picked up by the then in the controller. return response.data; }); // Return the promise to the controller return promise; } }; return myService;});app.controller('MainCtrl', function( myService,$scope) { // Call the async method and then do stuff with what is returned inside our own then function myService.async().then(function(d) { $scope.data = d; });});这是一个稍微复杂一些的版本，用于缓存请求，因此您只能在第一次http://plnkr.co/edit/2yH1F4IMZlMS8QsV9rHv?p=preview发出请求：
app.factory('myService', function($http) { var promise; var myService = { async: function() { if ( !promise ) { // $http returns a promise, which has a then function, which also returns a promise promise = $http.get('test.json').then(function (response) { // The then function here is an opportunity to modify the response console.log(response); // The return value gets picked up by the then in the controller. return response.data; }); } // Return the promise to the controller return promise; } }; return myService;});app.controller('MainCtrl', function( myService,$scope) { $scope.clearData = function() { $scope.data = {}; }; $scope.getData = function() { // Call the async method and then do stuff with what is returned inside our own then function myService.async().then(function(d) { $scope.data = d; }); };});
