RxJS:即使一个或多个失败，如何等待几个可观察对象 [英] RxJS: How to wait for several observables, even if one or many fail

问题描述

我正在使用 zip 运算符等待三个可观察对象并同时处理结果:

I was using the zip operator to wait for three observables and process the result simultaneously:

Observable
   .zip(
      this.sapService.getProductSpareParts(this.identForm.get('ident').value),
      this.mediacacheService.getMediaItemsByIdent(this.identForm.get('ident').value),
      this.mediacacheService.getMetaInfos(this.identForm.get('ident').value)
    )
    .subscribe((results: any) => {
      // do stuff
    });

这三个可观察值中的一个或多个可能失败并返回500结果.在这种情况下，所有其他待处理的观测值都将被取消.

It is possible that one or many of those three observables fail and return a 500 result. In this case, all other pending observables will be cancled.

我如何才能忽略错误的可观察对象，不取消它们，而等待其余的可观察对象完成，以处理成功的可观察对象的结果?

推荐答案

看看下面的解决方案，我认为这将解决您的问题

Have a look a below solution i think this will solve your problem

var source = Rx.Observable.onErrorResumeNext(
     Rx.Observable.just(42),
     Rx.Observable.throw(new Error()),
     Rx.Observable.just(56),
     Rx.Observable.throw(new Error()),
     Rx.Observable.just(78)
   );

var subscription = source.subscribe(
     data => console.log(data)
   ); 

结果

//=> 42

//=> 56

//=> 78

这篇关于RxJS:即使一个或多个失败，如何等待几个可观察对象的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！