使用AngularJs基于优先级的Http请求

Question

我正在使用Angularjs发送多个http请求。

我们可以为一些请求设置优先级吗?

我一直在发送http请求根据我的需要。我不能按顺序发送请求http请求

我们是否可以设置的优先级

任何想法?

谢谢

Answer 1

嘿，我建议你使用http拦截器服务，你可以监控每个请求和响应，就像这样，这只是一个想法

.factory('httpInterceptor', function ($q, $rootScope, $filter) {
var canceller = $q.defer();
var numLoadings = 0;
var serialRequests = false;
var timeO;
var time1;
var loadingbar = { loading: "<progress value='?' max='10'></progress>" };
var loadingspinner = { loading: '<ion-spinner icon="crescent"></ion-spinner>' };
return {
    request: function (config) {
        if (config.url.indexOf('http') > -1 && config.url.indexOf('UpdateDeviceOnlineState') == -1 && config.url.indexOf('maps.googleapis') == -1) {
            console.log(config);
            //timeout if request takes longer than 15 sec spinner is removed request is cancelled and alert is called
            //config.timeout = canceller.promise;
            //var time1 = setTimeout(function () {
            //    canceller.resolve('Unauthorized');
            //    $rootScope.$broadcast("all_requests_done");
            //    alert('keine verbindung');
            //}, 15000);
            numLoadings++;
            if (serialRequests == false) {
                //if (config.url.indexOf('http') > -1) {
                //    loadingbar.percent = numLoadings;
                //    $rootScope.$broadcast("open_requests", loadingbar);
                //} else {
                //    $rootScope.$broadcast("open_requests", loadingspinner);
                //}
                $rootScope.$broadcast("open_requests", loadingspinner);
            } else {
                clearTimeout(timeO);
            }
        }
        return config || $q.when(config)
    },
    response: function (response) {
        if (response.config.url.indexOf('http') > -1 && response.config.url.indexOf('UpdateDeviceOnlineState') == -1 && response.config.url.indexOf('maps.googleapis') == -1) {
            //clearTimeout(time1);
            serialRequests = true;
            numLoadings--;
            timeO = setTimeout(function () {
                serialRequests = false
                if ((numLoadings) === 0) {
                    $rootScope.$broadcast("all_requests_done");
                }
            });
        }
        return response || $q.when(response);
    },
    responseError: function (response) {
        if (response.config.url.indexOf('http') > -1 && response.config.url.indexOf('UpdateDeviceOnlineState') == -1 && response.config.url.indexOf('maps.googleapis') == -1) {
            serialRequests = true;
            numLoadings--;
            timeO = setTimeout(function () {
                serialRequests = false
                if ((numLoadings) === 0) {
                    $rootScope.$broadcast("all_requests_done");
                }
            });
        }
        return $q.reject(response);
    }
};
})

但我认为你必须在这里与承诺合作。$http有一个timeout属性，你可以用它来对你的请求进行优先级/排序