route.ts
const appRoutes: Routes = [
{
path: '',
redirectTo: 'login',
pathMatch: 'full'
},
{
path: 'login',
component: LoginComponent
},
{
path: 'dashboard',
canActivate: [AuthguardGuard],
component: MyNavComponent
},
{
path: '**',
redirectTo: 'login',
pathMatch: 'full'
}
];
Authguard.guard.ts
import { Injectable } from '@angular/core';
import { CanActivate, ActivatedRouteSnapshot, RouterStateSnapshot } from '@angular/router';
import { Observable } from 'rxjs';
import { UserService } from './user.service';
@Injectable({
providedIn: 'root'
})
export class AuthguardGuard implements CanActivate {
constructor(private user: UserService) { }
canActivate(
next: ActivatedRouteSnapshot,
state: RouterStateSnapshot): Observable<boolean> | Promise<boolean> | boolean {
return this.user.getUserLoggedIn();
}
}
User.service.ts
import { Injectable } from '@angular/core';
@Injectable({
providedIn: 'root'
})
export class UserService {
private isUserLoggedIn;
private username;
constructor() {
this.isUserLoggedIn = false;
}
setUserLoggedIn() {
this.isUserLoggedIn = true;
}
getUserLoggedIn() {
return this.isUserLoggedIn;
}
}
Login.component.ts
import { Component, OnInit } from '@angular/core';
import { Router } from '@angular/router';
import { UserService } from '../user.service';
import { FormControl, Validators } from "@angular/forms";
@Component({
selector: 'app-login',
templateUrl: './login.component.html',
styleUrls: ['./login.component.css']
})
export class LoginComponent implements OnInit {
flag = true;
mobileFormControl = new FormControl("", [
Validators.required,
]);
constructor(private router: Router, private user: UserService) { }
ngOnInit() {
}
loginUser(e) {
e.preventDefault();
console.log(e);
var username = e.target.elements[0].value;
var password = e.target.elements[1].value;
if (username == 'admin' && password == 'admin') {
this.user.setUserLoggedIn();
this.router.navigate(['dashboard']);
this.flag = true;
}
else {
this.flag = false;
this.router.navigate(['login']);
}
}
}
Logout.ts
logout() {
var r = confirm("Are you sure you want to Logout!");
if (r == true) {
this.router.navigate(['']);
}
}
点击退出后我仍然可以通过浏览器后退按钮移动到仪表板组件,如何解决这个请帮帮我。我不希望用户在不重新登录的情况下移动到仪表板组件。表示一旦注销,用户应该再次登录以进入仪表板组件。
如果您想以更简单的方式完成它,那么只需创建一个全局变量,例如LoggedInStatus
,当用户登录时,将此全局变量设置为true
。现在,在所有其他页面中,在ngOnInit()中保留代码
ngOnInit(){
if(!this.global.LoggedInStatus){
this.router.navigate(['../login'])
}
当用户调用logout()时,只需将LoggedInStatus
重新分配给false
。
这将限制用户导航到任何页面,而无需实际登录。
现在,如果您希望它更安全,那么当您调用登录API时,传递sessionID或令牌并将其存储在全局范围内。在每个页面中检查SessionID以进行验证,然后重定向到登录页面。
您可以通过创建令牌/会话来处理此问题。
通过这样做,我可以限制用户在注销后返回上一页。