Angular 6+ /错误回调上重试服务调用？

Question

我有一个服务调用的实现，它可能会引发错误，如果出现错误，是否可以重新运行该服务调用？

captureMultiScreen(elem: Alert, overwrite: boolean, success?: Function, failed?: Function) {
this.spinnerValue = true;
const captureModel: Capture = {
  member_id: elem.member_id,
  gateway: elem.gateway,
  account: elem.account,
  alert_id: elem.alert_id,
  transaction_id: elem.transaction_id,
  overwrite: overwrite
};

this.captureService.CaptureScreenService(captureModel).subscribe(result => {
  this.capServiceResponse = result;
},
(error) => {
  // Retry "CaptureScreenService" here
}

如果到达错误回调，是否有办法再次运行服务调用？

Answer 1

您可以使用retry function。在您的代码中，它将类似于：

this.captureService.CaptureScreenService(captureModel)
  .pipe(retry(3)).subscribe(...)