角度4，记住我的功能

Question

我正在使用Node js后端做angualar 4应用程序。我做了登录表单，一切都很好，我想实现该功能，请记住我。先感谢您。这是我的登录服务：

import { Injectable } from '@angular/core';

@Injectable()
export class loginService{
  rememberMe: boolean;
  constructor() { }

login(credentials) {
  sessionStorage.setItem('Name', credentials.firstName);
  sessionStorage.setItem('token', credentials.token);
}

getCostumer() {
  const user = {
    Name:  sessionStorage.getItem('firstName'),
    token: sessionStorage.getItem('token')
}

这是组件：

constructor(private signInService: SignInService, private router: Router, 
public dialog: MatDialog, private authService: AuthService) { }

ngOnInit() { }

  login(costumer) {
     this.loginService.login(costumer).subscribe((data) => {
       this.authService.login(data);
       this.router.navigate(['home']);
       this.dialog.closeAll();
      }, err => {
       this.message = err._body;
       console.log(this.message);
     });
  }
}

Answer 1

使用localStorage代替sessionStorage

就您而言，您可以执行以下操作：

if (isRemberMeChecked) {
    ...
    localStorage.setItem('Name', credentials.firstName);
    localStorage.setItem('token', credentials.token);
    ...
} else {
    ...
    sessionStorage.setItem('Name', credentials.firstName);
    sessionStorage.setItem('token', credentials.token);
    ...
}

如果您想在isRemberMeChecked全球范围内获取价值，可以使用角度服务

Answer 2

您在这里要做的是将localStorage用于RememberMe和凭据.firstName。您可以存储在sessionStorage中的credentials.token ：

login(credentials) {
  localStorage.removeItem('Name');
  localStorage.removeItem('RememberMe');
  sessionStorage.setItem('token', credentials.token);
  if(rememberMe){
    localStorage.setItem('Name', credentials.firstName);
    localStorage.setItem('RememberMe', JSON.stringify(this.rememberMe));
  }
}

重新加载后，它将获取RememberMe和Name：

if(JSON.parse(localStorage.getItem('RememberMe')) !== null)
{
  this.name = localStorage.getItem('Name');
  this.rememberMe = JSON.parse(localStorage.getItem('RememberMe'));
}