define(['app'], function(app){
    function HttpService($scope, $q, $http, appConfig){
        var url = appConfig.BASE_URL,
            ret = {ok: 0, data: {ok: 0}};

        function getA(){
            var deferred = $q.defer();
            deferred.resolve(ret.data); // 模拟请求成功
            return deferred.promise;
        }

       function getB(){
            var deferred = $q.defer();
            deferred.resolve(ret.data);
            return deferred.promise;
       };

        return {
            getA: getA,
            getB: getB
        }
    }
    return app.factory('HttpService', [
        '$scope',
        '$q',
        '$http',
        'appConfig',
        HttpService
    ]);
});

注入$scope,报错

干掉$scope,能正常跑

求解