小编Jus*_*sky的帖子

在我的角度应用程序中,我看到chrome(取消)api调用太快了.我还有一个HttpInterceptor,如果请求没有完成,它会在500ms后触发每个HttpClient请求的加载指示符.但是,对于获取(取消)的请求,似乎没有任何新事件随后隐藏我的加载指示器.

有没有办法在HttpInterceptor中检测"已取消"的请求,以便我可以再次隐藏我的加载指示器？

export class GlobalHttpInterceptor implements HttpInterceptor {
constructor(
private sessionService: SessionService,
private loadingService: LoadingService
) { }

intercept(
req: HttpRequest<any>,
next: HttpHandler
): Observable<HttpEvent<any>> {

setTimeout(() => {
  if (showLoading) {
    this.loadingService.show();
  }
}, 500);
let showLoading = true;

if (this.sessionService.headers.length > 0) {
  for (const x of this.sessionService.headers) {
    req = req.clone({
      headers: req.headers.set(x.key, x.value)
    });
  }
}

return next.handle(req)
  .do(
    (response) => {
      if (response instanceof HttpResponse) {
        showLoading = false;
        this.loadingService.hide();
      }
    },
    (error) => { …