Question

当我下定决定形成并等待价值变化时，如果我的共鸣是我的服务错误......

这是代码：

[[3,3],[4,3],[2,1]]

修改

我发现了什么问题，它在http intreceptor里面：

constructor(private fb: FormBuilder, private bankService: BankService) {
        this.page = 1;

        this.filter = this.fb.group({
            text: ['', []],
            bankC: ['', []]
        });

        this.filter.valueChanges
            // wait for a pause in typing of 200ms then emit the last value
            .debounceTime(200)
            // only accept values that don't repeat themselves
            .distinctUntilChanged()
            // map that to an observable HTTP request, using the TickerLoad
            // service and switch to that
            // observable. That means unsubscribing from any previous HTTP request
            // (cancelling it), and subscribing to the newly returned on here.
            .switchMap((val: any) => {
                return bankService.getCountry(val.bankC)
            })
            .subscribe((res) => {
                console.log(res);
            },
             (err) => {
                 console.log(err);
             });
            // send an empty array to tickers whenever clear emits by
            // merging in a the stream of clear events mapped to an
            // empty array.
    }

正是这部分：intercept(observable: Observable<Response>): Observable<Response> { return observable.catch((err, source) => { if (err.status == 401) { this._router.navigate(['']); return Observable.throw(err); //&& !_.endsWith(err.url, 'api/auth/login') } else { return Observable.throw(err); } }); }

如何在不制动订阅的情况下返回错误。

Answer 1

如果您想在subscribe()之前使用retry() operator重新订阅来源Observable：

...
.switchMap((val: any) => {
    return bankService.getCountry(val.bankC)
})
.retry(-1) // resubscribe forever
.subscribe((res) => {
    console.log(res);
}, ...

错误响应中断valueChanges [Angular2]

1 个答案: