Question

我尝试使用ES6语法将服务导入控制器，但我遇到注入问题

CategoriesService.js

export default class CategoriesService {
    constructor() {
        this.getCategories = function ($q) {
            var deferred = $q.defer();
            deferred.resolve([
                {
                    id: '1',
                    name: 'Category One',
                    slug: 'category_one',
                    profile: {
                        id: '1',
                        name: 'Thomas Wayne',
                        location: '1007 Mountain Drive, Gotham',
                        description: 'Dr. Thomas Wayne, one of the most respected patrons in all of Gotham City',
                        images: ['...', '...'],
                        featuredImage: '...'
                    }
                },
                {
                    id: '2',
                    name: 'Category Two',
                    slug: 'category_two',
                    profile: {
                        id: '2',
                        name: 'Martha Kane',
                        location: '1007 Mountain Drive, Gotham',
                        description: 'Martha Wayne (née Kane) was born into the Kane family, who were so rich that they allegedly "owned the half of Gotham that the Waynes don\'t"',
                        images: ['...', '...'],
                        featuredImage: '...'
                    }
                }
            ]);
            return deferred.promise;
        }
    }

}


CategoriesService.$inject = [];

CategoriesController.js

import CategoriesService from './CategoriesService';

export default class CategoriesController {
    constructor(CategoriesService) {
        CategoriesService.getCategories().then(getCategoriesSuccessFn, getCategoriesFailFn);

        function getCategoriesSuccessFn(data) {
            this.categories = data;
        }

        function getCategoriesFailFn() {
            console.error('Something went wrong');
        }
    }
}
CategoriesController.$inject = ['CategoriesService'];

错误

angular.js:13424 Error: [$injector:unpr] Unknown provider: CategoriesServiceProvider <- CategoriesService
http://errors.angularjs.org/1.5.3/$injector/unpr?p0=CategoriesServiceProvider%20%3C-%20CategoriesService
    at angular.js:68
    at angular.js:4418
    at Object.getService [as get] (angular.js:4571)
    at angular.js:4423
    at getService (angular.js:4571)
    at injectionArgs (angular.js:4595)
    at Object.invoke (angular.js:4617)
    at $controllerInit (angular.js:10027)
    at nodeLinkFn (angular.js:8965)
    at angular.js:9362

知道我在这里失踪的是什么吗？

Answer 1

即使使用ES6导入/导出，您仍然需要注册该服务。

<强> App.js

import CategoriesService from './CategoriesService';
import CategoriesController from './CategoriesController';

angular.module('app', [])
  .service('CategoriesService', CategoriesService)
  .controller('CategoriesController', CategoriesController);

无法使用ES6语法注入服务

1 个答案: