Question

尝试build a login demo on stackblitz和IIUC时，login的第二个参数应该收到throwError的结果，但不是。任何想法：

  login(username: string, password:string) {
    this.authenticate(username, password).subscribe(
      user => {
        this.ostore.put(USER_KEY, user);
        this.ostore.put(AUTHENTICATION_ERROR_KEY, false);
        this.router.navigate(['/']);
      }),
      (error)=>{
        console.log("Storing the Error");
        error => this.ostore.put(AUTHENTICATION_ERROR_KEY, AUTHENTICATION_ERROR_MESSAGE);
      }
  }


  private authenticate(username:string, password:string) {
  // Mock Authentication Check
  if (username !== 'user') {
      return throwError(AUTHENTICATION_ERROR_MESSAGE);
  }
  return of({ name: username });
  }

Answer 1

接收错误的不是第二个参数，而是susbscribe的第二个回调。像这样进行“登录”：

login(username: string, password:string) {
  this.authenticate(username, password).subscribe(
    user => {
      this.ostore.put(USER_KEY, user);
      this.ostore.put(AUTHENTICATION_ERROR_KEY, false);
      this.router.navigate(['/']);
    },
    error => {
      console.log("Storing the Error");
      error => this.ostore.put(AUTHENTICATION_ERROR_KEY, AUTHENTICATION_ERROR_MESSAGE);
    })
}

在此处查看：https://stackblitz.com/edit/angular-material-login-logout-slice-demo-knrdjs?file=src/app/auth.service.ts

RxJS throwError事件未定向到处理程序？

1 个答案: