Angular:如何使用RXJS 6调用finally() [英] Angular : how to call finally() with RXJS 6

问题描述

我正在使用RXJS 5，现在将其升级到6时，我遇到了一些问题.

I was using RXJS 5, now as I upgraded it to 6, I am facing some problems.

以前我能够使用catch并最终使用，但是由于每次更新catch都被catchError替换(管道中的with)，现在如何最终使用?

Previously I was able to use catch and finally but as per update catch is replaced with catchError (with in the pipe) now how to use finally?

我还有一些问题:

我是否需要更改throw-> throwError(在下面的代码Observable.throw(err);中)

Do I need to change throw->throwError (in below code Observable.throw(err);)

import { Observable, Subject, EMPTY, throwError } from "rxjs";
import { catchError } from 'rxjs/operators';

return next.handle(clonedreq).pipe(
          catchError((err: HttpErrorResponse) => {
        if ((err.status == 400) || (err.status == 401)) {
            this.interceptorRedirectService.getInterceptedSource().next(err.status);
            return Observable.empty();
        } else {
            return Observable.throw(err);
        }
       }) 
        //, finally(() => {
        //  this.globalEventsManager.showLoader.emit(false);
        //});
      );

还有现在如何使用publish().refCount()吗?

Also how to use publish().refCount() now ?

推荐答案

• 使用throwError而不是Observable.throw，请参见

  • use throwError instead of Observable.throw, see https://github.com/ReactiveX/rxjs/blob/master/docs_app/content/guide/v6/migration.md#observable-classes

    finally被重命名为finalize，您将在其他运算符的pipe()内部使用它.

    finally was renamed to finalize and you'll use it inside pipe() among other operators.

    与publish()和refCount()相同.两者都是在pipe()中使用的运算符.

    the same with publish() and refCount(). Both are operators you'll use inside pipe().

    这篇关于Angular:如何使用RXJS 6调用finally()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！