angular-http-interceptors

问题 I Setup Angular all the time with new Project. Anyone can suggest good boilerplate where no need to develop Basic required features which are required most of the times in a application. JWT Authentication in Angular 6 Bootstrap/Material Design setup in Angular 6 Http Services in Angular 6 File Uploading in Angular 6 Basic CRUD in Angular 6 Please suggest. It will save my lot of time. 回答1: You can follow this boilerplate https://github.com/brnrajoriya/Angular-Ready-To-Use-Boilerplate Just

问题 As you know it's possible to use Interceptors in new versions of Angular 4. In mine, I want to cancel a request in interceptor in some conditions. So is it possible? or maybe what should I ask is, Which way I should do that? Also It will be Ok! if I found a way to rewrite some response to the request instead of canceling it. 回答1: I think all you have to do to cut the interceptor chain is to simply return an empty Observable like so: import { EMPTY } from 'rxjs'; intercept(request: HttpRequest

问题 I am receiving the following strange dependency injection behavior when using custom HttpInterceptors in angular 5+. The following simplified code works fine: export class AuthInterceptor implements HttpInterceptor { constructor(private auth: AuthService) {} intercept(req: HttpRequest<any>, next: HttpHandler): Observable<HttpEvent<any>> { const token = this.auth.getToken(); return next.handle(req); } } export class AuthService { token: string; constructor() { console.log('AuthService

问题 So, I'm trying to intercept the http calls to add the Authorization header on each call if exist. This works well exept of the fact that no matter which http method I use (GET, POST, DELETE) it send the request with OPTIONS method instead. What am I doing wrong? Server is nodejs with restify. angular.module('mymodule').factory('RequestService', function () { var token = null; var service = { setToken: function setToken(_token) { token = _token; }, getToken: function getToken() { return token;

问题 export class AppHttpInterceptor implements HttpInterceptor { private cache = new HttpCache(); private cacheURLList = []; count = 0; constructor(@Inject(AppBlockUiService) private appBlockUiService: AppBlockUiService, @Inject(AppMessageService) private appMessageService: AppMessageService) { } intercept(req: HttpRequest<any>, next: HttpHandler): Observable<HttpEvent<any>> { const started = Date.now(); this.blockUi(); return next.handle(serverReq) .timeout(720000) .do( event => { if (event

问题 I'm working on an application with a large amount of lazy data loading. I would like to prioritize http requests based on 'priority' param. This is the concept of using it. $http.get(url, {params: query, priority: 1}) I was thinking of using $http interceptors. Something like that: angular.module('myModule') .factory('httpPriorityInterceptor', function ($interval, $q) { var requestStack = []; return { request: function (config) { config.priority = config.priority || 3; requestStack.push

问题 What is the best practice to use core module service in lazy loaded feature module and feature child modules. As per Angular style guide I have the following app -core - core.module.ts -logger.service.ts -token-interceptor.service.ts -authentication.service.ts -shared -shared.module.ts -base module (my feature base , lazy loaded with router-outlet) -base.module.ts -base.routing.module.ts -base -base.component.ts -admin (lazy loaded , child module of base module) -admin.module.ts -admin

问题 What is the best practice to use core module service in lazy loaded feature module and feature child modules. As per Angular style guide I have the following app -core - core.module.ts -logger.service.ts -token-interceptor.service.ts -authentication.service.ts -shared -shared.module.ts -base module (my feature base , lazy loaded with router-outlet) -base.module.ts -base.routing.module.ts -base -base.component.ts -admin (lazy loaded , child module of base module) -admin.module.ts -admin

问题 How to cancel/abort all pending HTTP requests angular 4+. There is an unsubscribe method to cancel HTTP Requests but how to cancel all pending requests all at once. Especially while route change. There is one thing I did ngOnDestroy() { this.subscription.unsubscribe(); } but how to achieve this globally Any Ideas? 回答1: Checkout the takeUntil() operator from RxJS to globally drop your subscriptions : - RxJS 6+ (using the pipe syntax) import { takeUntil } from 'rxjs/operators'; export class

问题 Recently I have been using Interceptors with Angular HttpClient. I add headers corresponding to some HTTP GET methods and for some I do not need those headers. How can I tell my interceptor to conditionally add interceptors to only those methods? I can even split up services like one service for headers and one without headers or one for different headers and one for different. NgModule providers { provide: HTTP_INTERCEPTORS, useClass: AuthInterceptor, multi: true, },{ provide: HTTP