在这里玩代码=> https://stackblitz.com/edit/playground-rxjs-f8xjsh
你好, 我正在尝试模拟一个失败的 API 调用,它将在 subscribe() { Error: } 部分发出错误值。
import { from, of, pipe, forkJoin, interval, AsyncSubject, BehaviorSubject,defer, Subject, timer, observable, throwError } from 'rxjs';
import { concatMap, map, mergeMap, zipWith, delay, tap, concatAll, concat, concatWith, switchMap, catchError } from 'rxjs/operators';
const apiCall = (callNumber, isError=false) => of('Api Call Result ' + callNumber).pipe(
tap(_=>console.log('Calling Api ' + callNumber)),
delay(1000),
tap(_=> throwError(() => new Error('ERROR')))
);
apiCall(99,true).subscribe({
next: x=>console.log(x),
error: e=>console.log(e)
});
目前错误没有被捕获,即被记录。 有人可以帮忙吗?
Stackblitz => https://stackblitz.com/edit/playground-rxjs-f8xjsh
最佳答案
这是一个工作示例,灵感来自 @JSmart523
const apiCall = (callNumber: number, isError = false) =>
of('Api Call Result ' + callNumber).pipe(
tap((_) => console.log('some log before')),
delay(1000),
switchMap((_) => {
if (isError) {
throw new Error(`ERROR`);
} else {
return of(_);
}
})
);
apiCall(99, true).subscribe({
next: (x) => console.log(x),
error: (e: Error) => console.log(e.message),
});
关于typescript - 如何在 rxjs 中创建一个在 1 秒后抛出错误的模拟 API 调用?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/71167170/