Firebase 身份验证不持久 [英] Firebase Authentication not persisting
问题描述
页面刷新后,身份验证似乎不会持续.即使在使用 firebase.auth.Auth.Persistence.LOCAL
之后.
Authentication doesn't seem to persist after page has been refreshed. Even after using firebase.auth.Auth.Persistence.LOCAL
.
每当我登录我的应用程序时,它都会成功地将我重定向到仪表板.但是,刷新页面后,无法访问 Dashboard.
Whenever I log into my app, it successfully redirects me to the Dashboard. But, when page has been refreshed, accessing Dashboard is not possible.
这是我的代码.
文件名:login.component.ts
import { Router } from '@angular/router';
import { Component, OnInit } from '@angular/core';
import * as firebase from 'firebase/app';
import { Observable } from 'rxjs/Observable';
import { AngularFireAuth } from 'angularfire2/auth';
import { AngularFirestore } from 'angularfire2/firestore';
@Component({
...
})
export class LoginComponent implements OnInit {
email: string = '';
password: string = '';
constructor(public afAuth: AngularFireAuth, private router: Router, private fb: FormBuilder) {}
signIn(credentials) {
this.email = credentials.email;
this.password = credentials.password;
this.afAuth.auth.setPersistence(firebase.auth.Auth.Persistence.LOCAL).then(() => {
this.afAuth.auth.signInWithEmailAndPassword(this.email, this.password).then(() => {
this.router.navigate(['dashboard']);
}).catch((err) => {
...
})
}).catch((err) => {
...
})
}
ngOnInit() {}
}
文件名:auth.guard.ts
import { Injectable } from '@angular/core';
import { Router, CanActivate, ActivatedRouteSnapshot, RouterStateSnapshot } from '@angular/router';
import { Observable } from 'rxjs/Observable';
import { AngularFireAuth } from 'angularfire2/auth';
@Injectable()
export class AuthGuard implements CanActivate {
constructor(private router: Router, private afAuth: AngularFireAuth) {}
canActivate(next: ActivatedRouteSnapshot, state: RouterStateSnapshot): boolean {
var authed = this.afAuth.auth.currentUser;
if (authed) {
return true;
} else {
this.router.navigate(['/']);
return false;
}
}
}
附加信息:
@angular/animations: 5.0.0
@angular/common: 5.0.0
@angular/compiler: 5.0.0
@angular/core: 5.0.0
@angular/forms: 5.0.0
@angular/http: 5.0.0
@angular/platform-browser: 5.0.0
@angular/platform-browser-dynamic: 5.0.0
@angular/router: 5.0.0
angular2-materialize: 15.1.10
angularfire2: 5.0.0-rc.3
core-js: 2.4.1
firebase: 4.6.1
hammerjs: 2.0.8
jquery: 2.2.4
materialize-css: 0.100.2
rxjs: 5.5.2
zone.js: 0.8.14
预期结果:
http://localhost:4200/dashboard
(登录时可访问)
当前结果:
http://localhost:4200/dashboard
(无法访问在登录时;重定向到主页)
http://localhost:4200/dashboard
(INACCESSIBLE WHILE LOGGED IN; REDIRECTS TO HOME)
我哪里出错了或其他什么地方?
Where did I go wrong or something else?
推荐答案
您需要使用 onAuthStateChanged
侦听器来检测初始身份验证状态:
You need to use onAuthStateChanged
listener to detect the initial auth state:
firebase.auth().onAuthStateChanged(user => {
if (user) {
// User is signed in.
} else {
// User is signed out.
}
});
这篇关于Firebase 身份验证不持久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!