无需授权载体即可刷新令牌请求

Question

我正在Angular 7应用程序中使用刷新令牌拦截器。我有一个jwt拦截器，它向每个请求添加授权令牌。现在，我想发送不带授权载体的刷新令牌，因为API不需要授权载体。

现在的问题是，刷新令牌请求与过期的令牌一起作为授权承载发送。但是服务器不需要过期的访问令牌作为授权载体。任何帮助将不胜感激。

这是我的刷新令牌方法。

  refreshToken() {
    const token = localStorage.getItem('refresh_token');
    return this.http.post(`${environment.apiUrl}/token/refresh`, { 'refresh_token': token }, {headers: {}})
      .pipe(
        map(res => {
          this.tokenPayload = res;
          this.tokenPayload = this.tokenPayload.data.access_token;
          if (res) {
            localStorage.setItem('access_token', JSON.stringify(this.tokenPayload));
          }
          return this.tokenPayload;
        }));
  }

这是我的JWT拦截器。

 isRefreshingToken = false;
  tokenSubject: BehaviorSubject<string> = new BehaviorSubject<string>(null);

  intercept(request: HttpRequest<any>, next: HttpHandler): Observable<HttpSentEvent
  | HttpHeaderResponse | HttpProgressEvent | HttpResponse<any> | HttpUserEvent<any> | any> {

    return next.handle(this.addTokenToRequest(request, this.authService.getAuthToken()))
      .pipe(
        catchError(err => {
          if (err instanceof HttpErrorResponse) {
            switch ((<HttpErrorResponse>err).status) {
              case 401:
                return this.handle401Error(request, next);
              case 400:
                return <any>this.authService.logout();
            }
          } else {
            return throwError(err);
          }
        }));
  }

  private addTokenToRequest(request: HttpRequest<any>, token: string): HttpRequest<any> {
    return request.clone({ setHeaders: { Authorization: `Bearer ${token}`}});
  }


  private handle401Error(request: HttpRequest<any>, next: HttpHandler) {

    if(!this.isRefreshingToken) {

      this.isRefreshingToken = true;

      // Reset here so that the following requests wait until the token
      // comes back from the refreshToken call.
      this.tokenSubject.next(null);

      return this.authService.refreshToken()
      .pipe(
       switchMap((token) => {

         if(token) {
           this.tokenSubject.next(JSON.stringify(token));
           localStorage.setItem('access_token', JSON.stringify(token));
           return next.handle(this.addTokenToRequest(request, JSON.stringify(token)));
         }

         return <any>this.authService.logout();
       }),
       catchError(err => {

         return <any>this.authService.logout();
       }),
       finalize(() => {
         this.isRefreshingToken = false;
       })
     );
    } else {
      this.isRefreshingToken = false;

      return this.tokenSubject
        .pipe(filter(token => token != null),
          take(1),
          switchMap(token => {
          return next.handle(this.addTokenToRequest(request, token));
        }));
    }
  }