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我正在构建我的第一个 Angular 应用程序,但遇到了问题。我有一个 AngularJS 资源,我用成功和错误回调调用它的 .get,如下所示:

var new_uptime = Uptime.get({}, function(){
    console.log("new_uptime", new_uptime, "$scope.uptime", $scope.uptime);
    console.log("new_uptime.uptime", new_uptime.uptime);
    if ($scope.uptime && new_uptime.uptime < $scope.uptime.uptime) {
        console.log("Reboot detected");
        location.reload(true);
    }
    $scope.uptime = new_uptime;
    $timeout(reload_uptime, 5000);
}, function(response){
    console.log("Failed to read uptime", response);
    console.log("Retrying in 10s");
    $scope.uptime = "[unknown]";
    $timeout(reload_uptime, 10000);
}); 

我已经用来自服务器的各种错误状态对此进行了测试,它工作正常。现在我想在 503s 上添加应用程序范围的重试。我为此添加了一个模块,如下所示:

retry_module = angular.module('service.retry', []);
retry_module.factory("retry", ["$q", "$injector", "$timeout", function($q, $injector, $timeout) {
    return {
        "responseError": function(rejection) {
            console.log("Request failed", rejection);
            if (rejection.status != 503) {
                console.log("Unhandled status");
                return $q.reject(rejection);
            }
            var delay = Math.floor(Math.random() * 1000);
            console.log("Was 503, retrying in " + delay + "ms");
            var deferred = $q.defer();
            $timeout(function() {
                var $http = $http || $injector.get("$http");
                deferred.resolve($http(rejection.config));
            }, delay);
            return deferred;
        }
    };
}]);
retry_module.config(["$httpProvider", function ($httpProvider) {
    $httpProvider.interceptors.push("retry");
}]);

这适用于重试 503,成功的尝试由 Uptime.get 调用者中的成功回调处理,如预期的那样。但是,如果服务器返回一些其他错误,那么我会得到“未处理状态”打印输出,但既没有“new_uptime”也没有“读取正常运行时间失败”。我的拒绝去哪儿了,我该如何解决这样的问题?

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1 回答 1

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您需要返回承诺,而不是延迟。所以你的 responseError 处理程序的结尾应该是:

        var deferred = $q.defer();
        $timeout(function() {
            var $http = $http || $injector.get("$http");
            deferred.resolve($http(rejection.config));
        }, delay);
        return deferred.promise;
于 2013-10-29T08:42:00.230 回答