How to resumeOnError (or similar) in RxJS5

问题

I would like to use the onErrorResumeNext feature of RxJS, i.e. to continue to receive events even if an error is received (instead of terminating).

But I can see in the following doc that there is no correspondance in RxJS5: https://github.com/ReactiveX/RxJS/blob/master/MIGRATION.md.

Is there a workaround to use such feature? Thanks!

回答1:

I've been looking for that operator too! I came up with a solution for my needs that I hope will help yours. It's not the best solution most likely, but I hope it can help until a better solution can be found by some others on here, or until this operator is added back in 5.0 (hopefully!) :)

var Observable = Rx.Observable;

var source1 = Observable.create(function(observer){
    observer.error();
});
var source2 = Observable.create(function(observer){
    observer.next('Continuing on');
    observer.complete();
});


var stream = source1.catch(function(data){
  return source2;
});



stream.subscribe(function(data){
  console.log(data);
});

JS Bin Example: https://jsbin.com/qadozoveta/edit?html,js,console

回答2:

You can use the following in rxjs5 still.

 Observable.onErrorResumeNext(observable1$, observable2$, observable3$...)
           .subscribe(() => { ... })

onErrorResumeNext source code

来源：https://stackoverflow.com/questions/35772998/how-to-resumeonerror-or-similar-in-rxjs5