javascript - 当服务器宕机时，不会返回错误

Question

我有一家工厂

  angular.module('app.services',[])
    .factory('myFactory', function($http){
      return {
        getData: function(){
          return {animal: 'dog'}
        },
        isUser: function() {
          var url='http://parleyvale.com/isUser/';
          var promise=$http.get(url).   
            success(function(data, status) {
              console.log(data);
              console.log(status);
              return data;
            }).
            error(function(data, status){
              console.log(data || "Request failed");
              console.log(status);
              var data = {message: "Server is down"}
              return data;
            });
          return promise;
        },    ...

为 Controller 提供数据

  angular.module('app.controllers',[])
    .controller('MainCtrl', ['$scope', 'myFactory', function($scope, myFactory){
      $scope.factoryOutput=myFactory.getData();  
      $scope.isUser=myFactory.isUser().then(function(data){
        console.log(data.data.items);
        $scope.factoryOutput2=data.data.items
      });  ...

但是如果服务器关闭，它不会返回任何内容，尽管控制台得到

x GET http://parleyvale.com/isUser/ net::ERR_CONNECTION_REFUSED

如何构建我的代码，以便在服务器关闭时捕获错误？这是http://jsbin.com/nebed/2/edit

Answer 1

Controller 代码中缺少 then 的第二个函数参数，它处理失败:

$scope.isUser=myFactory.isUser('tim').then(function(data){
    console.log(data.data.items);
    $scope.factoryOutput2=data.data.items
}, function(data){ $scope.factoryOutput2 = data });  

Clone of your JS Bin with updates