'Observable<Observable<HttpEvent<any>>>' 不可分配给类型 'Observable<any[]>'

Question

我想调用一个 http 请求，该请求必须返回一个 observable，然后由 以特定时间间隔调用的方法以进一步...

请考虑一下

订阅者方法

 startReceivingMeasurmentLiveDataV2(httpOptions: any,deviceId:number,seriesType:string,aggregation:string,from:string,to:string,pageSize:number,revert:boolean) {
debugger;
if (this.intervalSubscription) {
  this.intervalSubscription.unsubscribe();
}

this.intervalSubscription = interval(200)
  .pipe(
    takeWhile(() => this.alive),
//    switchMap(() => this.deviceService.getMeasurmentLiveUpdateCardDataV2(httpOptions,deviceId,seriesType,aggregation,from,to,pageSize,revert)),
    switchMap(() => this.deviceService.GetMeasurmentsV2(httpOptions,deviceId,seriesType,aggregation,from,to,pageSize,revert)),
  )
  .subscribe((liveUpdateChartData: any[]) => {

  debugger;
    this.liveUpdateChartData = [...liveUpdateChartData];

//console.log("测量数据"); // console.log(this.liveUpdateChartData); }); }

Http Observable

GetMeasurmentsV2(httpOptions: any, deviceID: number, seriesType: string, aggregationType: string, dateFrom: string, dateTo: string, pageSize: number, revert: boolean):  Observable<any[]>  {
let url =  `${this.config.apiUrl}/measurement/measurements/series?aggregationType='${aggregationType}'&dateFrom='${dateFrom}'&dateTo='${dateTo}'&pageSize='${pageSize}'&revert='${revert}'&series='${seriesType}'&source='${deviceID}'`
url = url.replace(/'/g,'');  


return this.httpClient.get<any>(

     url

      ,httpOptions)
      
      .pipe(map(measurments => {
        return observableOf(measurments);

     
      }));

}

问题来了

请帮我解决这个问题？

Answer 1

你现在正在返回一个嵌套的 observable

只返回初始的 observable return this.httpClient.get<any>(url, httpOptions)，而不将响应包装在另一个 observable 中