javascript - AngularJS Promises 返回错误但成功将内容发送到数据库

Question

我使用error.status在控制台日志中得到的错误是-1，但我发送到数据库的数据已成功发布。数据显示在我的 ng-repeat 列表中。这很奇怪，因为这种情况发生的概率为 5%。

这是我的 Controller :

    angular.module('app')
.controller('WebsiteCtrl', ['WebsiteService', '$scope', '$http', '$timeout', '$uibModal', function (WebsiteService, $scope, $http, $timeout, $uibModal, $uibModalInstance) {
    $scope.model = WebsiteService.getWebsites();
    $scope.clients = WebsiteService.getClients();
    $scope.new = {
        Website: {}
    };

    //create alerts when page reloads after crud functions
    if (localStorage.getItem("Success")) {
        $scope.alert = "Success";
        $scope.alertMessage = localStorage.getItem("Success");
        localStorage.clear();
    } else if (localStorage.getItem("Error") && localStorage.getItem("Error") != null) {
        //sometimes get errors even when adding, deleting, updating is successful
        $scope.alert = "Error";
        $scope.alertMessage = localStorage.getItem("Error");
        localStorage.clear();
    };


    //Obtains list of websites from WebsiteSvc
    getWebsites(); // this initializes Website List on page load
    function getWebsites() {
        WebsiteService.getWebsites()
            .then(
            function (data) {
                $scope.model = data;
            },
            function (errResponse) {
                console.log("Error while getting websites");
            });
    }

    getClients();
    function getClients() {
        WebsiteService.getClients()
        .then(
        function (data) {
            $scope.clients = data;
        },
        function (errResponse) {
            console.log("Error while getting Clients");
        });
    }

    //add a website
    $scope.addWebsite = function () {
        var data = WebsiteService.addWebsite($scope.new.Website).then(
            function (success) {
                localStorage.setItem("Success", "Added Website Id:" + success.Id + " Successfully!");
            },
            function (error) {
                console.log(JSON.stringify(error, null, 2));
                console.log(error.statusText);
                localStorage.setItem("Error", "Error while adding website! " + error.status + ":" +  error.statusText);
            }
        );
        //location.reload();
    }

    //update a job
    $scope.updateWebsite = function (website) {
        WebsiteService.updateWebsite(website).then(
            function (success) {
                localStorage.setItem("Success", "Updated Website Id:" + success.Id + " Successfully!");
            },
            function (error) {
                localStorage.setItem("Error", "Error while updating website! " + error.status + ":" + error.statusText);
                console.log(error);
            }
        );
        location.reload();
    }
    // deletes website
    $scope.deleteWebsite = function (website) {
        var indx = $scope.model.websiteList.indexOf(website);
        WebsiteService.deleteWebsite(website.Id).then(
            function (success) {
                localStorage.setItem("Success", "Deleted Website Id:" + success.Id + " Successfully!");
            },
            function (error) {
                localStorage.setItem("Error", "Error occured while deleting website! " + error.status + ":" +  error.statusText);
            }
        );
        location.reload();
    }

    //toggles active 
    $scope.updateActive = function (w) {
        if (w.Active === true) {
            w.Active = false;
        } else if (w.Active === false) {
            w.Active = true;
        }
        //updates job to reflect gui (active or inactive)
        this.updateWebsite(w);
    }

    //select job
    $scope.selectWebsite = function (w) {
        $scope.selectedWebsite = w;
    }

    //show modal function
    $scope.showModal = function (action, obj) {
        $scope.showBool = true; //boolean to be able to exit modal after update
        $scope.model.runButtonText = "Run Job"; //this is for run job only
        $scope.$modalInstance = $uibModal.open({
            scope: $scope,
            inputs: {
                title: action + " Job"
            },
            restrict: "E",
            templateUrl: 'app/modal/WebsiteModals/modal' + action + 'Template.html',
            controller: "JobCtrl",
            backdrop: 'static',
            keyboard: false

        });
    }

    //exit modal function
    $scope.exitModal = function () {
        $scope.$modalInstance.dismiss('cancel');
    };


}]);

我的服务:

    //Website Service class that executes the CRUD functionality
angular.module('app').factory('WebsiteService', ['$http', '$q', function ($http, $q) {

    var factory = {
        getWebsites: getWebsites,
        getClients: getClients,
        addWebsite: addWebsite,
        updateWebsite: updateWebsite,
        deleteWebsite: deleteWebsite,
    };

    return factory;

    //creates service call for getWebsites
    function getWebsites() {
        var deferred = $q.defer();
        $http.get('Websites/GetWebsites')
            .then(
            function (response) {
                deferred.resolve(response.data);
            },
            function (errResponse) {
                console.log('Error while getting websites');
                deferred.reject(errResponse);
            }
        );
        //returns a promise that function was successful or failed
        //helps control asynch calls
        return deferred.promise;
    };

    //creates service call for getClients
    function getClients() {
        var deferred = $q.defer();
        $http.get('Websites/GetClients')
            .then(
            function (response) {
                deferred.resolve(response.data);
            },
            function (errResponse) {
                console.log('Error while getting websites');
                deferred.reject(errResponse);
            }
        );
        //returns a promise that function was successful or failed
        //helps control asynch calls
        return deferred.promise;
    };

    function addWebsite(website) {
        var deferred = $q.defer();
        console.log('Service: ', website);
        $http.post('Websites/Post', website)
            .then(
            function (response) {
                deferred.resolve(response.data);
                console.log(response.data);
            },
            function (errResponse) {
                console.log("Error while adding website");
                deferred.reject(errResponse);
            }
        );
        //returns a promise that function was successful or failed
        //helps control async calls
        return deferred.promise;
    };

    function updateWebsite(website) {
        var deferred = $q.defer();
        $http.post("Websites/Post", website)
            .then(
            function (response) {
                deferred.resolve(response.data);
                console.log(response.data);
            },
            function (errResponse) {
                console.log("Error while updating website");
                deferred.reject(errResponse);
            }
        );
        //returns a promise that function was successful or failed
        //helps control async calls
        return deferred.promise;
    };

    function deleteWebsite(id) {
        var deferred = $q.defer();
        console.log('Service: ', id);
        $http.post("Websites/Delete/" + id)
            .then(
            function (response) {
                deferred.resolve(response.data);
                console.log(response.data);
            },
            function (errResponse) {
                console.log("Error while deleting website");
                deferred.reject(errResponse);
            }
        );
        //returns a promise that function was successful or failed
        //helps control async calls
        return deferred.promise;
    };

}]);

它发生在所有与数据库相关的函数上，但我正在使用我的 addWebsite 函数来获取有用的数据。当这种情况很少发生时，很难进行调试。

任何帮助将不胜感激!提前致谢!

编辑 这是错误为 -1 并显示网络选项卡的图片。这是在不同的选项卡中，但它是相同的代码。

Answer 1

根据 angularjs 文档:“200 到 299 之间的响应状态代码被视为成功状态，并将导致成功回调被调用。任何超出该范围的响应状态代码都被视为错误状态，并将导致调用错误回调。此外，小于 -1 的状态代码被标准化为零。-1 通常意味着请求被中止，例如使用 config.timeout。请注意，如果响应是重定向，XMLHttpRequest 将透明地跟随它，这意味着结果(成功或错误)将由最终响应状态代码确定。”查看:https://docs.angularjs.org/api/ng/service/ $http。