AngularJS拦截$http请求

$httpProvider.interceptors.push(['$q',function ($q) {
    return {
        request: function (config) {
            if(config.url==='/admin.php') {
                return $q.reject('no auth!');
            }
            return config;
        },
        responseError: function(rejection) {
            if(rejection==='no auth!') {
                alert('无权限！！！');
                return {
                    data: {
                        errno: -1,
                        error:'无权限'
                    }
                }
            }
            return $q.reject(rejection);
        }
    }
}]);