Jinan_project/src/app/home/nav/nav.component.ts

import { Component, OnInit } from '@angular/core';
import { Router } from '@angular/router';
import { CacheTokenService } from 'src/app/service/cache-token.service';

@Component({
  selector: 'app-nav',
  templateUrl: './nav.component.html',
  styleUrls: ['./nav.component.scss']
})
export class NavComponent implements OnInit {

  constructor(private router: Router, public token: CacheTokenService) { }

  ngOnInit(): void {
    //调用服务中的function刷新token
    this.token.startUp()
  }
  signOut() {
    this.router.navigate(['/login'])
  }
  ngOnDestroy(): void {
    this.token.delete()
  }
}