如何在angular 7 HttpInterceptor CatchError中提出新请求？

Question

我使用angular 7拦截器处理我的错误，如果错误是400，但我想刷新令牌，但我遇到了错误。我想使用我的服务来刷新interceptor-catchError中的令牌。我尝试了很多方法但没有成功。 我认为这不是好方法。请帮我。预先感谢

intercept(request: HttpRequest<any>, next: HttpHandler): Observable<HttpEvent<any>> {
    // add authorization header with jwt token if available
    let currentUser = this.returnResponseAfterUserLoginService.currentUserValue();
    let currentToken = this.returnResponseAfterUserLoginService.currentTokenValue();
    let token = this.localStorageService.getFromLocal('token')
    // if (currentUser && currentToken) {
    if (currentToken) {
      request = request.clone({
        setHeaders: {
          Authorization: `JWT ${currentToken}`
        }
      });
    }

    // return next.handle(request);
    return next.handle(request)
      .pipe(
        retry(1),
        catchError((error: HttpErrorResponse) => {
          let errorMessage = '';
          if (error instanceof HttpErrorResponse) {
            switch (error.status) {
              case 416:
                return this.handle416Error(error)
              case 400:
                return this.handle400Error(error, request)
              case 401 || 403:
                return this.handle401Error(error)

            }



          }
          // return throwError(error)
        })
      )
  }
handle400Error(error, request) {
    if (error) {
      if (error.status === 400 && error.error.non_field_errors[0] === 'Signature has expired.') {
        const currentToken = this.localStorageService.getFromLocal('token');
        const isLogged = this.returnResponseAfterUserLoginService.currentIsLoggedValue();
        console.log('Signature has expired.');
        // it doesn't works
       this.userService.refreshToken(currentToken).subscribe(
         x=>{
           if(x && x['token'])
           console.log(x);

         },
         err =>{
           console.log(err);

          this.router.navigate(['/login'], { queryParams: { redirectURL: this.router.url } })

         }
       )