如何仅重试 RxJs 中源 observable 发出的某些错误

问题描述

srcObservable.retry() 将捕获由 srcObservable 发出的错误并重新订阅 srcObservable，而不管错误的类型.但是，在某些情况下，只希望重试 srcObservable 发出的某些类型的错误.有没有办法在 RxJs 中巧妙地做到这一点?

A srcObservable.retry() will catch the error emitted by the srcObservable and resubscribe to the srcObservable regardless of the type of the error. However, on certain scenario, it is wanted to only retry on certain type of error emitted by the srcObservable. Is there a way to do so in RxJs neatly?

推荐答案

尝试使用 retryWhen:

src.retryWhen(function (errors) {
    // retry for some errors, end the stream with an error for others
    return errors.do(function (e) {
        if (!canRetry(e)) {
            throw e;
        }
    });
});

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