我正在使用concat依次调用多个API,但是当出错时,concat停止调用api,因此如何获取错误并继续调用下一个API,这是我的代码:
getData() {
concat(...this.data.map(asset =>
this.assetService.requestData({ assetId: asset._id })
))
.pipe(catchError(error => {
console.log(error);
// return of(null);
this.error = error;
return throwError(error);
}))
.subscribe();
}
每个可观察到的错误捕获都应单独发生。您可以简单地返回一个空的observable:
import { EMPTY } from 'rxjs';
concat(...this.data.map(asset =>
this.assetService.requestData({assetId: asset._id})
.pipe(catchError(error => {
console.log(error);
this.error = error;
return EMPTY;
}))
))
.pipe(filter(data => !!data)) // add this line if you do not want to see nulls in result
.subscribe();
另一个选择是使用onErrorResumeNext
功能:
import { onErrorResumeNext } from 'rxjs';
onErrorResumeNext(...this.data.map(asset =>
this.assetService.requestData({assetId: asset._id})
)
.subscribe();