Javascript 声明工厂中的问题：AngularJs

考虑下面的代码

var app = angular.module('app',[]);

app.controller('mainController',function($scope,$log){
$rootScope.user = {user :'user@find.com',password :'123'};
$rootScope.reply = {};

$scope.eb = new vertx.EventBus('http://100.100.100.100:8000');

$scope.loginFunction = function(){
            $scope.eb.send( "com.find.web.ed", 
                {"Em":$scope.user.user,"Pw":$scope.user.password},
                function(reply){
                 $rootScope.reply = reply;
                 $log.warn($rootScope.reply);
} 
);
}
});

您正在用回调中的reply设置x。这就是问题所在。您正在用reply对象替换整个对象。以及指向旧x的fact.getData方法，即{}

---

要解决在事实对象中创建x的问题，也可以使用promise。

您的工厂代码只能获取一次数据，并且无法响应控制器。我想您可能正在寻找类似这样的东西，每次调用

send（）

，控制器提供回调

eb.send( "com.find.web.ed",{"Em":'user@find.com',"Pw":'123'}, 
        function(reply){
            x = reply;
        });

您也可以通过

$q

承诺来实现这一点

var app = angular.module('app',[]);

app.factory('serverData', function(){
    var eb = new vertx.EventBus('http://xxx.xxx.xxx.xxx');
    var fact = {};

    fact.getData = function(user, password, callback){
        // call send and pass it the callback function
        eb.send( "com.find.web.ed",
                 {"Em": user,"Pw": password}, 
                 callback
        );
    };

    return fact;
});

app.controller('mainController', function($scope, serverData){
    $scope.user = {user :'user@find.com',password :'123'};
    $scope.reply = {};

    serverData($scope.user.user, $scope.user.password, function (reply) {
        $scope.reply = reply;
        // might need $scope.$apply() here
    });
});

---

需要更多关于什么不起作用的信息。。。您能否确认您能够执行

eb.send（）

方法并在不使用Angular的情况下填充

x

？假设事件总线代码有效，您是否希望每次调用

serverData.getData（）

时都调用

eb.send（）

？@AnthonyChu，我已经更新了问题，请参见上文。

var app = angular.module('app',[]);

app.factory('serverData', function(){
    var eb = new vertx.EventBus('http://xxx.xxx.xxx.xxx');
    var fact = {};

    fact.getData = function(user, password, callback){
        // call send and pass it the callback function
        eb.send( "com.find.web.ed",
                 {"Em": user,"Pw": password}, 
                 callback
        );
    };

    return fact;
});

app.controller('mainController', function($scope, serverData){
    $scope.user = {user :'user@find.com',password :'123'};
    $scope.reply = {};

    serverData($scope.user.user, $scope.user.password, function (reply) {
        $scope.reply = reply;
        // might need $scope.$apply() here
    });
});

var app = angular.module('app',[]);

app.factory('serverData', function($q){
    var eb = new vertx.EventBus('http://xxx.xxx.xxx.xxx');
    var fact = {};

    fact.getData = function(user, password){
        var deferred = $q.defer();
        // call send and pass it the callback function
        eb.send( "com.find.web.ed",
                 {"Em": user,"Pw": password}, 
                 function (reply) {
                     deferred.resolve(reply);
                 }
                 // also should reject on error
        );
        return deferred.promise;
    };

    return fact;
});

app.controller('mainController', function($scope, serverData){
    $scope.user = {user :'user@find.com',password :'123'};
    $scope.reply = {};

    serverData($scope.user.user, $scope.user.password)
        .then(function (reply) {
            $scope.reply = reply;
        });
});