我有一个向后端发出AJAX请求的服务服务:functionGetCompaniesService(options){this.url='/company';this.Companies=undefined;this.CompaniesPromise=$http.get(this.url);}Controller:varCompaniesOb=newGetCompanies();CompaniesOb.CompaniesPromise.then(function(data){$scope.Companies=data;});我希望我的服务处理“.then”函数，而不是必须在我的Contr