解决angularjs中同步执行http请求的方法

self.tableParams = new NgTableParams({}, {
 getData: function (params) {
 $http.post("rest/staff/page", $scope.req).success(function (data) {
 if (data != null && data != undefined) {
 $scope.staffs = data.data;
 params.total($scope.totalPage);
 }
 }).error(function (data) {
 $("#serverErrorModal").modal({show: true});
 });
 
 return $scope.staffs;
 }
});

self.tableParams = new NgTableParams({'count': 10} , {
 getData: function (params) {
 var promise = $http.post("rest/staff/page", $scope.req);
 return promise.then(function (resut) {
 var response = resut.data;
 var total = response.otherData[0];
 params.total(total);
 return response.data;
 });
 
 }
});