通过服务的angular2刷新令牌

import { Injectable } from '@angular/core';
import { HttpClient } from '@angular/common/http';

@Injectable()
export class TokenRefreshService {
  constructor(private http: HttpClient) {}

  refreshToken(refreshToken: string): Promise<any> {
    const refreshTokenUrl = 'https://example.com/refresh-token'; // 刷新令牌的API地址

    return this.http.post(refreshTokenUrl, { refreshToken })
      .toPromise()
      .then(response => {
        // 处理刷新令牌的响应
        const newAccessToken = response.access_token;
        const newRefreshToken = response.refresh_token;

        // 更新本地存储的令牌
        localStorage.setItem('accessToken', newAccessToken);
        localStorage.setItem('refreshToken', newRefreshToken);

        return response;
      })
      .catch(error => {
        // 处理刷新令牌失败的情况
        console.error('刷新令牌失败:', error);
        throw error;
      });
  }
}

import { Component, OnInit } from '@angular/core';
import { TokenRefreshService } from './token-refresh.service';

@Component({
  selector: 'app-protected-resource',
  templateUrl: './protected-resource.component.html',
  styleUrls: ['./protected-resource.component.css']
})
export class ProtectedResourceComponent implements OnInit {
  constructor(private tokenRefreshService: TokenRefreshService) {}

  ngOnInit() {
    this.fetchProtectedResource();
  }

  fetchProtectedResource() {
    // 获取访问令牌
    const accessToken = localStorage.getItem('accessToken');

    // 发送请求获取受保护资源
    // 使用访问令牌作为身份验证凭据
    // ...
  }

  handleTokenExpired() {
    // 当访问令牌过期时，调用刷新令牌的方法
    const refreshToken = localStorage.getItem('refreshToken');
    this.tokenRefreshService.refreshToken(refreshToken)
      .then(response => {
        // 刷新令牌成功后，重新获取受保护资源
        this.fetchProtectedResource();
      })
      .catch(error => {
        // 刷新令牌失败，处理错误
        console.error('刷新令牌失败:', error);
        // 跳转到登录页面或其他处理
      });
  }
}